[Mantas]

Maybe a clogged cat can cause that bucking on acceleration/rough idle/loss of power/increased fuel consumption problems? I’ve tried to unscrew O2 sensor (pre cat) and test drive, but nothing changed. But maybe a hole, created by unscrewed pre cat O2 sensor is not big enough to make a difference? Pre cat O2 sensor voltage fluctuates all the time (0.1-0.9V) when driving at constant speed, and O2 sensor after cat shows “rich” (0.8-0.9V) which is good, I suppose, and shows that cat is working – at least to some degree. But maybe it still can be clogged? Engine burns oil a bit, so I quess there is such possibility that cat is clogged

[Mantas]

Maybe a clogged cat can cause that bucking on acceleration/rough idle/loss of power/increased fuel consumption problems? I’ve tried to unscrew O2 sensor (pre cat) and test drive, but nothing changed. But maybe a hole, created by unscrewed pre cat O2 sensor is not big enough to make a difference? Pre cat O2 sensor voltage fluctuates all the time (0.1-0.9V) when driving at constant speed, and O2 sensor after cat shows “rich” (0.8-0.9V) which is good, I suppose, and shows that cat is working – at least to some degree. But maybe it still can be clogged? Engine burns oil a bit, so I quess there is such possibility that cat is clogged

[Mantas]

Well, injectors do spray fuel. FPR vacuum line does not have a smell of it. Tried to remove FRP’s vac line, cap it and drive. No improvement, rough idle and bucking are still there. Removing spark plug wires one by one at idle seems to add the same amount of engine shaking.

[Mantas]

Well, injectors do spray fuel. FPR vacuum line does not have a smell of it. Tried to remove FRP’s vac line, cap it and drive. No improvement, rough idle and bucking are still there. Removing spark plug wires one by one at idle seems to add the same amount of engine shaking.

[Mantas]

Maybe somebody can suggest what else to check?

[Mantas]

Maybe somebody can suggest what else to check?

[Mantas]

So, any other ideas on where to look and what to do?

[Mantas]

So, any other ideas on where to look and what to do?

[Mantas]

Cyl. 1 – 203PSI (14BARS)
Cyl. 2 – 195PSI (13.5BARS)
Cyl. 3 – 203PSI (14BARS)
Cyl. 4 – 210PSI (14.5BARS)

Manual states, that difference between cylinders can be up to 2 bars (29PSI) so it’s up to spec I quess. Tested on hot and cold engine, results were the same.

[Mantas]

Cyl. 1 – 203PSI (14BARS)
Cyl. 2 – 195PSI (13.5BARS)
Cyl. 3 – 203PSI (14BARS)
Cyl. 4 – 210PSI (14.5BARS)

Manual states, that difference between cylinders can be up to 2 bars (29PSI) so it’s up to spec I quess. Tested on hot and cold engine, results were the same.

[Mantas]

As I understand, everytime I release and then hit the gas, ECU sharply retards timing (from let’s say 27 degrees BTDC to 8.5 degrees BTDC) and STFT gets very high – up to 20 and the car bucks/jerks. What could be the cause?

[Mantas]

As I understand, everytime I release and then hit the gas, ECU sharply retards timing (from let’s say 27 degrees BTDC to 8.5 degrees BTDC) and STFT gets very high – up to 20 and the car bucks/jerks. What could be the cause?

[Mantas]

Here is an attached file (TrackLog-2014-Jan-08_20-49-55.csv). It can be viewed by a free CSV viewer o Microsoft Exel. It contains STFT, LTFT, MAP, TPS, timing advance and RPM data. What I did was I drove a car pushing it tu buck/jerk – suddenly accelerate hard and then release gas. Maybe somebody can comment that data?

STFT LTFT MAP(kPA) TPS (%) Timing adv. RPM

-0.78125 0 28 – – 9.01960754 11.5 754
-0.78125 0 28 – – 9.01960754 11.5 754
-0.78125 0 28 – – 9.01960754 11.5 754
-0.78125 0 28 – – 9.01960754 11.5 754
-0.78125 0 28 – – 9.01960754 11.5 754
-0.78125 0 28 – – 9.01960754 11.5 754
-0.78125 0 28 – – 9.01960754 11.5 754
-0.78125 0 28 – – 9.01960754 11.5 754
-0.78125 0 28 – – 9.01960754 11.5 754
-0.78125 0 28 – – 9.01960754 11.5 754
-0.78125 0 28 – – 9.01960754 11.5 754
-0.78125 0 27 – – 9.01960754 11.5 754
-0.78125 0 27 – – 9.01960754 11.5 754
-0.78125 0 27 – – 9.01960754 11.5 754
-0.78125 0 27 – – 9.01960754 11.5 754
-0.78125 0 27 – – 9.01960754 11.5 743.5
-0.78125 0 27 – – 9.01960754 11.5 743.5
-2.34375 0 27 – – 9.01960754 11.5 743.5
-2.34375 0 27 – – 9.01960754 11.5 743.5
-2.34375 0 27 – – 9.01960754 12 743.5
-2.34375 0 27 – – 9.01960754 12 743.5
-2.34375 0 27 – – 9.01960754 12 743.5
-2.34375 0 27 – – 9.01960754 12 743.5
-2.34375 0 27 – – 9.01960754 12 743.5
-2.34375 0 27 – – 9.01960754 12 743.5
-2.34375 0 27 – – 9.01960754 12 743.5
-2.34375 0 27 – – 9.01960754 12 743.5
-2.34375 0 28 – – 9.01960754 12 743.5
-2.34375 0 28 – – 9.01960754 12 743.5
-2.34375 0 28 – – 9.01960754 12 738.25
-3.90625 0 28 – – 9.01960754 12 738.25
-3.90625 0 28 – – 9.01960754 12 738.25
-3.90625 0 28 – – 9.01960754 13.5 738.25
-3.90625 0 28 – – 9.01960754 13.5 738.25
-3.90625 0 28 – – 9.01960754 13.5 738.25
-3.90625 0 28 – – 9.01960754 13.5 738.25
-3.90625 0 28 – – 9.01960754 13.5 738.25
-3.90625 0 28 – – 9.01960754 13.5 738.25
-3.90625 0 28 – – 9.01960754 13.5 738.25
-3.90625 0 28 – – 9.01960754 13.5 751.5
-3.90625 0 28 – – 9.01960754 13.5 751.5
-3.125 0 28 – – 9.01960754 13.5 751.5
-3.125 0 28 – – 9.01960754 11.5 751.5
-3.125 0 28 – – 9.01960754 11.5 751.5
-3.125 0 28 – – 9.01960754 11.5 751.5
-3.125 0 28 – – 9.01960754 11.5 751.5
-3.125 0 28 – – 9.01960754 11.5 751.5
-3.125 0 28 – – 9.01960754 11.5 751.5
-3.125 0 29 – – 9.01960754 11.5 751.5
-3.125 0 29 – – 9.01960754 11.5 751.5
-3.125 0 29 – – 9.01960754 11.5 751.5
-2.34375 0 29 – – 9.01960754 11.5 751.5
-2.34375 0 29 – – 9.01960754 11.5 751.5
-2.34375 0 29 – – 9.01960754 11.5 751.5
-2.34375 0 29 – – 9.01960754 11.5 751.5
-2.34375 0 29 – – 9.01960754 11.5 751.5
-2.34375 0 29 – – 9.01960754 11.5 751.5
-2.34375 0 29 – – 9.01960754 11.5 751.5
-2.34375 0 28 – – 9.01960754 11.5 751.5
-2.34375 0 28 – – 9.01960754 11.5 751.5
-2.34375 0 28 – – 9.01960754 11.5 743.75
-2.34375 0 28 – – 9.01960754 11.5 743.75
-1.5625 0 28 – – 9.01960754 11.5 743.75
-1.5625 0 28 – – 9.01960754 11 743.75
-1.5625 0 28 – – 9.01960754 11 743.75
-1.5625 0 28 – – 9.01960754 11 743.75
-1.5625 0 28 – – 9.01960754 11 743.75
-1.5625 -0.78125 28 – – 9.01960754 11 743.75
-1.5625 -0.78125 28 – – 9.01960754 11 743.75
-1.5625 -0.78125 31 – – 9.01960754 11 743.75
-1.5625 -0.78125 31 – – 9.01960754 11 753.75
-1.5625 -0.78125 31 – – 9.01960754 11 753.75
1.5625 -0.78125 31 – – 9.01960754 11 753.75
1.5625 -0.78125 31 – – 9.01960754 11 753.75
1.5625 -0.78125 31 – – 9.01960754 19.5 753.75
1.5625 -0.78125 31 – – 9.01960754 19.5 753.75
1.5625 -0.78125 31 – – 15.68627453 19.5 753.75
1.5625 -0.78125 31 – – 15.68627453 19.5 753.75
1.5625 -0.78125 31 – – 15.68627453 19.5 753.75
1.5625 -0.78125 43 – – 15.68627453 19.5 753.75
1.5625 -0.78125 43 – – 15.68627453 19.5 753.75
1.5625 -0.78125 43 – – 15.68627453 19.5 1883.25
1.5625 -0.78125 43 – – 15.68627453 19.5 1883.25
2.34375 -0.78125 43 – – 15.68627453 19.5 1883.25
2.34375 -0.78125 43 – – 15.68627453 28.5 1883.25
2.34375 -0.78125 43 – – 15.68627453 28.5 1883.25
2.34375 -0.78125 43 – – 16.07843208 28.5 1883.25
2.34375 -0.78125 43 – – 16.07843208 28.5 1883.25
2.34375 -0.78125 43 – – 16.07843208 28.5 1883.25
2.34375 -0.78125 43 – – 16.07843208 28.5 1883.25
2.34375 -0.78125 43 – – 16.07843208 28.5 1883.25
2.34375 -0.78125 43 – – 16.07843208 28.5 1633.25
2.34375 -0.78125 43 – – 16.07843208 28.5 1633.25
10.9375 -0.78125 43 – – 16.07843208 28.5 1633.25
10.9375 -0.78125 43 – – 16.07843208 25.5 1633.25
10.9375 -0.78125 43 – – 16.07843208 25.5 1633.25
10.9375 -0.78125 43 – – 16.47058868 25.5 1633.25
10.9375 -0.78125 43 – – 16.47058868 25.5 1633.25
10.9375 -0.78125 43 – – 16.47058868 25.5 1633.25
10.9375 -0.78125 50 – – 16.47058868 25.5 1633.25
10.9375 -0.78125 50 – – 16.47058868 25.5 1633.25
10.9375 -0.78125 50 – – 16.47058868 25.5 1436.75
10.9375 -0.78125 50 – – 16.47058868 25.5 1436.75
7.8125 -0.78125 50 – – 16.47058868 25.5 1436.75
7.8125 -0.78125 50 – – 16.47058868 25.5 1436.75
7.8125 -0.78125 50 – – 16.47058868 22.5 1436.75
7.8125 -0.78125 50 – – 16.47058868 22.5 1436.75
7.8125 -0.78125 50 – – 16.47058868 22.5 1436.75
7.8125 -0.78125 50 – – 16.47058868 22.5 1436.75
7.8125 -0.78125 50 – – 16.47058868 22.5 1436.75
7.8125 -0.78125 55 – – 16.47058868 22.5 1436.75
7.8125 -0.78125 55 – – 16.47058868 22.5 1554
7.8125 -0.78125 55 – – 16.47058868 22.5 1554
0.78125 -0.78125 55 – – 16.47058868 22.5 1554
0.78125 -0.78125 55 – – 16.47058868 22.5 1554
0.78125 -0.78125 55 – – 16.47058868 26 1554
0.78125 -0.78125 55 – – 16.47058868 26 1554
0.78125 -0.78125 55 – – 16.47058868 26 1554
0.78125 -0.78125 55 – – 16.47058868 26 1554
0.78125 -0.78125 55 – – 16.47058868 26 1554
0.78125 -0.78125 47 – – 16.47058868 26 1554
0.78125 -0.78125 47 – – 16.47058868 26 1554
0.78125 -0.78125 47 – – 16.47058868 26 1964.25
14.0625 -0.78125 47 – – 16.47058868 26 1964.25
14.0625 -0.78125 47 – – 16.47058868 26 1964.25
14.0625 -0.78125 47 – – 16.47058868 27.5 1964.25
14.0625 -0.78125 47 – – 16.47058868 27.5 1964.25
14.0625 -0.78125 47 – – 9.01960754 27.5 1964.25
14.0625 -0.78125 47 – – 9.01960754 27.5 1964.25
14.0625 -0.78125 47 – – 9.01960754 27.5 1964.25
14.0625 -0.78125 19 – – 9.01960754 27.5 1964.25
14.0625 -0.78125 19 – – 9.01960754 27.5 1964.25
14.0625 -0.78125 19 – – 9.01960754 27.5 2071.75
14.0625 -0.78125 19 – – 9.01960754 27.5 2071.75
0 -0.78125 19 – – 9.01960754 27.5 2071.75
0 -0.78125 19 – – 9.01960754 27 2071.75
0 -0.78125 19 – – 9.01960754 27 2071.75
0 -0.78125 19 – – 9.01960754 27 2071.75
0 -0.78125 19 – – 9.01960754 27 2071.75
0 -0.78125 19 – – 9.01960754 27 2071.75
0 -0.78125 16 – – 9.01960754 27 2071.75
0 -0.78125 16 – – 9.01960754 27 2071.75
0 -0.78125 16 – – 9.01960754 27 1662.75
0 -0.78125 16 – – 9.01960754 27 1662.75
17.968 -0.78125 16 – – 9.01960754 27 1662.75
17.968 -0.78125 16 – – 9.01960754 27 1662.75
17.968 -0.78125 16 – – 9.01960754 8.5 1662.75
17.968 -0.78125 16 – – 42.35294342 8.5 1662.75
17.968 -0.78125 16 – – 42.35294342 8.5 1662.75
17.968 -0.78125 16 – – 42.35294342 8.5 1662.75
17.968 -0.78125 16 – – 42.35294342 8.5 1662.75
17.968 -0.78125 90 – – 42.35294342 8.5 1662.75
17.968 -0.78125 90 – – 42.35294342 8.5 2612.25
17.968 -0.78125 90 – – 42.35294342 8.5 2612.25
8.5937 -0.78125 90 – – 42.35294342 8.5 2612.25
8.5937 -0.78125 90 – – 42.35294342 8.5 2612.25
8.5937 -0.78125 90 – – 42.35294342 36 2612.25
8.5937 -0.78125 90 – – 42.35294342 36 2612.25
8.5937 -0.78125 90 – – 9.01960754 36 2612.25
8.5937 -0.78125 90 – – 9.01960754 36 2612.25
8.5937 -0.78125 90 – – 9.01960754 36 2612.25
8.5937 -0.78125 14 – – 9.01960754 36 2612.25
8.5937 -0.78125 14 – – 9.01960754 36 2612.25
8.5937 -0.78125 14 – – 9.01960754 36 2326.25
8.5937 -0.78125 14 – – 9.01960754 36 2326.25
0 -0.78125 14 – – 9.01960754 36 2326.25
0 -0.78125 14 – – 9.01960754 26.5 2326.25
0 -0.78125 14 – – 9.01960754 26.5 2326.25
0 -0.78125 14 – – 9.01960754 26.5 2326.25
0 -0.78125 14 – – 9.01960754 26.5 2326.25
0 -0.78125 14 – – 9.01960754 26.5 2326.25
0 -0.78125 17 – – 9.01960754 26.5 2326.25
0 -0.78125 17 – – 9.01960754 26.5 2326.25
0 -0.78125 17 – – 9.01960754 26.5 2145.75
0 -0.78125 17 – – 9.01960754 26.5 2145.75
17.1875 -0.78125 17 – – 9.01960754 26.5 2145.75
17.1875 -0.78125 17 – – 9.01960754 15 2145.75
17.1875 -0.78125 17 – – 9.01960754 15 2145.75
17.1875 -0.78125 17 – – 19.6078434 15 2145.75
17.1875 -0.78125 17 – – 19.6078434 15 2145.75
17.1875 -0.78125 17 – – 19.6078434 15 2145.75
17.1875 -0.78125 17 – – 19.6078434 15 2145.75
17.1875 -0.78125 20 – – 19.6078434 15 2145.75
17.1875 -0.78125 20 – – 19.6078434 15 2145.75
17.1875 -0.78125 20 – – 19.6078434 15 2628.75
12.5 -0.78125 20 – – 19.6078434 15 2628.75
12.5 -0.78125 20 – – 19.6078434 15 2628.75
12.5 -0.78125 20 – – 19.6078434 26.5 2628.75
12.5 -0.78125 20 – – 19.6078434 26.5 2628.75
12.5 -0.78125 20 – – 9.01960754 26.5 2628.75
12.5 -0.78125 20 – – 9.01960754 26.5 2628.75
12.5 -0.78125 20 – – 9.01960754 26.5 2628.75
12.5 -0.78125 12 – – 9.01960754 26.5 2628.75
12.5 -0.78125 12 – – 9.01960754 26.5 2628.75
12.5 -0.78125 12 – – 9.01960754 26.5 2255.5
12.5 -0.78125 12 – – 9.01960754 26.5 2255.5
0 -0.78125 12 – – 9.01960754 26.5 2255.5
0 -0.78125 12 – – 9.01960754 27 2255.5
0 -0.78125 12 – – 9.01960754 27 2255.5
0 -0.78125 12 – – 18.4313736 27 2255.5
0 -0.78125 12 – – 18.4313736 27 2255.5
0 -0.78125 12 – – 18.4313736 27 2255.5
0 -0.78125 12 – – 18.4313736 27 2255.5
0 -0.78125 83 – – 18.4313736 27 2255.5
0 -0.78125 83 – – 18.4313736 27 2255.5
0 -0.78125 83 – – 18.4313736 27 2505
13.2812 -0.78125 83 – – 18.4313736 27 2505
13.2812 -0.78125 83 – – 18.4313736 27 2505
13.2812 -0.78125 83 – – 18.4313736 36 2505
13.2812 -0.78125 83 – – 18.4313736 36 2505
13.2812 -0.78125 83 – – 9.01960754 36 2505
13.2812 -0.78125 83 – – 9.01960754 36 2505
13.2812 -0.78125 83 – – 9.01960754 36 2505
13.2812 -0.78125 13 – – 9.01960754 36 2505
13.2812 -0.78125 13 – – 9.01960754 36 2505
13.2812 -0.78125 13 – – 9.01960754 36 2580.75
0 -0.78125 13 – – 9.01960754 36 2580.75
0 -0.78125 13 – – 9.01960754 36 2580.75
0 -0.78125 13 – – 9.01960754 15 2580.75
0 -0.78125 13 – – 9.01960754 15 2580.75
0 -0.78125 13 – – 9.01960754 15 2580.75
0 -0.78125 13 – – 9.01960754 15 2580.75
0 -0.78125 13 – – 9.01960754 15 2580.75
0 -0.78125 15 – – 9.01960754 15 2580.75
0 -0.78125 15 – – 9.01960754 15 2580.75
0 -0.78125 15 – – 9.01960754 15 2232.75
0 -0.78125 15 – – 9.01960754 15 2232.75
20.3125 -0.78125 15 – – 9.01960754 15 2232.75
20.3125 -0.78125 15 – – 9.01960754 15 2232.75
20.3125 -0.78125 15 – – 9.01960754 18.5 2232.75
20.3125 -0.78125 15 – – 24.31372643 18.5 2232.75
20.3125 -0.78125 15 – – 24.31372643 18.5 2232.75
20.3125 -0.78125 15 – – 24.31372643 18.5 2232.75
20.3125 -0.78125 15 – – 24.31372643 18.5 2232.75
20.3125 -0.78125 67 – – 24.31372643 18.5 2232.75
20.3125 -0.78125 67 – – 24.31372643 18.5 2232.75
20.3125 -0.78125 67 – – 24.31372643 18.5 2943.25
7.03125 -0.78125 67 – – 24.31372643 18.5 2943.25
7.03125 -0.78125 67 – – 24.31372643 18.5 2943.25
7.03125 -0.78125 67 – – 24.31372643 36.5 2943.25
7.03125 -0.78125 67 – – 24.31372643 36.5 2943.25
7.03125 -0.78125 67 – – 9.01960754 36.5 2943.25
7.03125 -0.78125 67 – – 9.01960754 36.5 2943.25
7.03125 -0.78125 67 – – 9.01960754 36.5 2943.25
7.03125 -0.78125 12 – – 9.01960754 36.5 2943.25
7.03125 -0.78125 12 – – 9.01960754 36.5 2943.25
7.03125 -0.78125 12 – – 9.01960754 36.5 2617.75
7.03125 -0.78125 12 – – 9.01960754 36.5 2617.75
0 -0.78125 12 – – 9.01960754 36.5 2617.75
0 -0.78125 12 – – 9.01960754 36.5 2617.75
0 -0.78125 12 – – 9.01960754 15 2617.75
0 -0.78125 12 – – 9.01960754 15 2617.75
0 -0.78125 12 – – 9.01960754 15 2617.75
0 -0.78125 12 – – 9.01960754 15 2617.75
0 -0.78125 12 – – 9.01960754 15 2617.75
0 -0.78125 17 – – 9.01960754 15 2617.75
0 -0.78125 17 – – 9.01960754 15 2617.75
0 -0.78125 17 – – 9.01960754 15 2222
17.9687 -0.78125 17 – – 9.01960754 15 2222
17.9687 -0.78125 17 – – 9.01960754 15 2222
17.9687 -0.78125 17 – – 9.01960754 11 2222
17.9687 -0.78125 17 – – 9.01960754 11 2222
17.9687 -0.78125 17 – – 27.45098114 11 2222
17.9687 -0.78125 17 – – 27.45098114 11 2222
17.9687 -0.78125 17 – – 27.45098114 11 2222
17.9687 -0.78125 76 – – 27.45098114 11 2222
17.9687 -0.78125 76 – – 27.45098114 11 2222
17.9687 -0.78125 76 – – 27.45098114 11 3073.75
17.9687 -0.78125 76 – – 27.45098114 11 3073.75
8.59375 -0.78125 76 – – 27.45098114 11 3073.75
8.59375 -0.78125 76 – – 27.45098114 11 3073.75
8.59375 -0.78125 76 – – 27.45098114 36.5 3073.75
8.59375 -0.78125 76 – – 9.01960754 36.5 3073.75
8.59375 -0.78125 76 – – 9.01960754 36.5 3073.75
8.59375 -0.78125 76 – – 9.01960754 36.5 3073.75
8.59375 -0.78125 76 – – 9.01960754 36.5 3073.75
8.59375 -0.78125 12 – – 9.01960754 36.5 3073.75
8.59375 -0.78125 12 – – 9.01960754 36.5 2889
8.59375 -0.78125 12 – – 9.01960754 36.5 2889
0 -0.78125 12 – – 9.01960754 36.5 2889
0 -0.78125 12 – – 9.01960754 36.5 2889
0 -0.78125 12 – – 9.01960754 15 2889
0 -0.78125 12 – – 9.01960754 15 2889
0 -0.78125 12 – – 9.01960754 15 2889
0 -0.78125 12 – – 9.01960754 15 2889
0 -0.78125 12 – – 9.01960754 15 2889
0 -0.78125 15 – – 9.01960754 15 2889
0 -0.78125 15 – – 9.01960754 15 2889
0 -0.78125 15 – – 9.01960754 15 2436.5
0 -0.78125 15 – – 9.01960754 15 2436.5
18.75 -0.78125 15 – – 9.01960754 15 2436.5
18.75 -0.78125 15 – – 9.01960754 20.5 2436.5
18.75 -0.78125 15 – – 9.01960754 20.5 2436.5
18.75 -0.78125 15 – – 25.49019623 20.5 2436.5
18.75 -0.78125 15 – – 25.49019623 20.5 2436.5
18.75 -0.78125 15 – – 25.49019623 20.5 2436.5
18.75 -0.78125 15 – – 25.49019623 20.5 2436.5
18.75 -0.78125 70 – – 25.49019623 20.5 2436.5
18.75 -0.78125 70 – – 25.49019623 20.5 3145.75
18.75 -0.78125 70 – – 25.49019623 20.5 3145.75
10.1562 -0.78125 70 – – 25.49019623 20.5 3145.75
10.1562 -0.78125 70 – – 25.49019623 20.5 3145.75
10.1562 -0.78125 70 – – 25.49019623 37.5 3145.75
10.1562 -0.78125 70 – – 9.01960754 37.5 3145.75
10.1562 -0.78125 70 – – 9.01960754 37.5 3145.75
10.1562 -0.78125 70 – – 9.01960754 37.5 3145.75
10.1562 -0.78125 70 – – 9.01960754 37.5 3145.75
10.1562 -0.78125 12 – – 9.01960754 37.5 3145.75
10.1562 -0.78125 12 – – 9.01960754 37.5 3145.75
10.1562 -0.78125 12 – – 9.01960754 37.5 3091.5
0 -0.78125 12 – – 9.01960754 37.5 3091.5
0 -0.78125 12 – – 9.01960754 37.5 3091.5
0 -0.78125 12 – – 9.01960754 15 3091.5
0 -0.78125 12 – – 9.01960754 15 3091.5
0 -0.78125 12 – – 9.01960754 15 3091.5
0 -0.78125 12 – – 9.01960754 15 3091.5
0 -0.78125 12 – – 9.01960754 15 3091.5
0 -0.78125 12 – – 9.01960754 15 3091.5
0 -0.78125 12 – – 9.01960754 15 3091.5
0 -0.78125 12 – – 9.01960754 15 2713.25
0 -0.78125 12 – – 9.01960754 15 2713.25
17.9687 -0.78125 12 – – 9.01960754 15 2713.25
17.9687 -0.78125 12 – – 9.01960754 30 2713.25
17.9687 -0.78125 12 – – 9.01960754 30 2713.25
17.9687 -0.78125 12 – – 25.09803963 30 2713.25
17.9687 -0.78125 12 – – 25.09803963 30 2713.25
17.9687 -0.78125 12 – – 25.09803963 30 2713.25
17.9687 -0.78125 12 – – 25.09803963 30 2713.25
17.9687 -0.78125 67 – – 25.09803963 30 2713.25

[Mantas]

Here is an attached file (TrackLog-2014-Jan-08_20-49-55.csv). It can be viewed by a free CSV viewer o Microsoft Exel. It contains STFT, LTFT, MAP, TPS, timing advance and RPM data. What I did was I drove a car pushing it tu buck/jerk – suddenly accelerate hard and then release gas. Maybe somebody can comment that data?

STFT LTFT MAP(kPA) TPS (%) Timing adv. RPM

-0.78125 0 28 – – 9.01960754 11.5 754
-0.78125 0 28 – – 9.01960754 11.5 754
-0.78125 0 28 – – 9.01960754 11.5 754
-0.78125 0 28 – – 9.01960754 11.5 754
-0.78125 0 28 – – 9.01960754 11.5 754
-0.78125 0 28 – – 9.01960754 11.5 754
-0.78125 0 28 – – 9.01960754 11.5 754
-0.78125 0 28 – – 9.01960754 11.5 754
-0.78125 0 28 – – 9.01960754 11.5 754
-0.78125 0 28 – – 9.01960754 11.5 754
-0.78125 0 28 – – 9.01960754 11.5 754
-0.78125 0 27 – – 9.01960754 11.5 754
-0.78125 0 27 – – 9.01960754 11.5 754
-0.78125 0 27 – – 9.01960754 11.5 754
-0.78125 0 27 – – 9.01960754 11.5 754
-0.78125 0 27 – – 9.01960754 11.5 743.5
-0.78125 0 27 – – 9.01960754 11.5 743.5
-2.34375 0 27 – – 9.01960754 11.5 743.5
-2.34375 0 27 – – 9.01960754 11.5 743.5
-2.34375 0 27 – – 9.01960754 12 743.5
-2.34375 0 27 – – 9.01960754 12 743.5
-2.34375 0 27 – – 9.01960754 12 743.5
-2.34375 0 27 – – 9.01960754 12 743.5
-2.34375 0 27 – – 9.01960754 12 743.5
-2.34375 0 27 – – 9.01960754 12 743.5
-2.34375 0 27 – – 9.01960754 12 743.5
-2.34375 0 27 – – 9.01960754 12 743.5
-2.34375 0 28 – – 9.01960754 12 743.5
-2.34375 0 28 – – 9.01960754 12 743.5
-2.34375 0 28 – – 9.01960754 12 738.25
-3.90625 0 28 – – 9.01960754 12 738.25
-3.90625 0 28 – – 9.01960754 12 738.25
-3.90625 0 28 – – 9.01960754 13.5 738.25
-3.90625 0 28 – – 9.01960754 13.5 738.25
-3.90625 0 28 – – 9.01960754 13.5 738.25
-3.90625 0 28 – – 9.01960754 13.5 738.25
-3.90625 0 28 – – 9.01960754 13.5 738.25
-3.90625 0 28 – – 9.01960754 13.5 738.25
-3.90625 0 28 – – 9.01960754 13.5 738.25
-3.90625 0 28 – – 9.01960754 13.5 751.5
-3.90625 0 28 – – 9.01960754 13.5 751.5
-3.125 0 28 – – 9.01960754 13.5 751.5
-3.125 0 28 – – 9.01960754 11.5 751.5
-3.125 0 28 – – 9.01960754 11.5 751.5
-3.125 0 28 – – 9.01960754 11.5 751.5
-3.125 0 28 – – 9.01960754 11.5 751.5
-3.125 0 28 – – 9.01960754 11.5 751.5
-3.125 0 28 – – 9.01960754 11.5 751.5
-3.125 0 29 – – 9.01960754 11.5 751.5
-3.125 0 29 – – 9.01960754 11.5 751.5
-3.125 0 29 – – 9.01960754 11.5 751.5
-2.34375 0 29 – – 9.01960754 11.5 751.5
-2.34375 0 29 – – 9.01960754 11.5 751.5
-2.34375 0 29 – – 9.01960754 11.5 751.5
-2.34375 0 29 – – 9.01960754 11.5 751.5
-2.34375 0 29 – – 9.01960754 11.5 751.5
-2.34375 0 29 – – 9.01960754 11.5 751.5
-2.34375 0 29 – – 9.01960754 11.5 751.5
-2.34375 0 28 – – 9.01960754 11.5 751.5
-2.34375 0 28 – – 9.01960754 11.5 751.5
-2.34375 0 28 – – 9.01960754 11.5 743.75
-2.34375 0 28 – – 9.01960754 11.5 743.75
-1.5625 0 28 – – 9.01960754 11.5 743.75
-1.5625 0 28 – – 9.01960754 11 743.75
-1.5625 0 28 – – 9.01960754 11 743.75
-1.5625 0 28 – – 9.01960754 11 743.75
-1.5625 0 28 – – 9.01960754 11 743.75
-1.5625 -0.78125 28 – – 9.01960754 11 743.75
-1.5625 -0.78125 28 – – 9.01960754 11 743.75
-1.5625 -0.78125 31 – – 9.01960754 11 743.75
-1.5625 -0.78125 31 – – 9.01960754 11 753.75
-1.5625 -0.78125 31 – – 9.01960754 11 753.75
1.5625 -0.78125 31 – – 9.01960754 11 753.75
1.5625 -0.78125 31 – – 9.01960754 11 753.75
1.5625 -0.78125 31 – – 9.01960754 19.5 753.75
1.5625 -0.78125 31 – – 9.01960754 19.5 753.75
1.5625 -0.78125 31 – – 15.68627453 19.5 753.75
1.5625 -0.78125 31 – – 15.68627453 19.5 753.75
1.5625 -0.78125 31 – – 15.68627453 19.5 753.75
1.5625 -0.78125 43 – – 15.68627453 19.5 753.75
1.5625 -0.78125 43 – – 15.68627453 19.5 753.75
1.5625 -0.78125 43 – – 15.68627453 19.5 1883.25
1.5625 -0.78125 43 – – 15.68627453 19.5 1883.25
2.34375 -0.78125 43 – – 15.68627453 19.5 1883.25
2.34375 -0.78125 43 – – 15.68627453 28.5 1883.25
2.34375 -0.78125 43 – – 15.68627453 28.5 1883.25
2.34375 -0.78125 43 – – 16.07843208 28.5 1883.25
2.34375 -0.78125 43 – – 16.07843208 28.5 1883.25
2.34375 -0.78125 43 – – 16.07843208 28.5 1883.25
2.34375 -0.78125 43 – – 16.07843208 28.5 1883.25
2.34375 -0.78125 43 – – 16.07843208 28.5 1883.25
2.34375 -0.78125 43 – – 16.07843208 28.5 1633.25
2.34375 -0.78125 43 – – 16.07843208 28.5 1633.25
10.9375 -0.78125 43 – – 16.07843208 28.5 1633.25
10.9375 -0.78125 43 – – 16.07843208 25.5 1633.25
10.9375 -0.78125 43 – – 16.07843208 25.5 1633.25
10.9375 -0.78125 43 – – 16.47058868 25.5 1633.25
10.9375 -0.78125 43 – – 16.47058868 25.5 1633.25
10.9375 -0.78125 43 – – 16.47058868 25.5 1633.25
10.9375 -0.78125 50 – – 16.47058868 25.5 1633.25
10.9375 -0.78125 50 – – 16.47058868 25.5 1633.25
10.9375 -0.78125 50 – – 16.47058868 25.5 1436.75
10.9375 -0.78125 50 – – 16.47058868 25.5 1436.75
7.8125 -0.78125 50 – – 16.47058868 25.5 1436.75
7.8125 -0.78125 50 – – 16.47058868 25.5 1436.75
7.8125 -0.78125 50 – – 16.47058868 22.5 1436.75
7.8125 -0.78125 50 – – 16.47058868 22.5 1436.75
7.8125 -0.78125 50 – – 16.47058868 22.5 1436.75
7.8125 -0.78125 50 – – 16.47058868 22.5 1436.75
7.8125 -0.78125 50 – – 16.47058868 22.5 1436.75
7.8125 -0.78125 55 – – 16.47058868 22.5 1436.75
7.8125 -0.78125 55 – – 16.47058868 22.5 1554
7.8125 -0.78125 55 – – 16.47058868 22.5 1554
0.78125 -0.78125 55 – – 16.47058868 22.5 1554
0.78125 -0.78125 55 – – 16.47058868 22.5 1554
0.78125 -0.78125 55 – – 16.47058868 26 1554
0.78125 -0.78125 55 – – 16.47058868 26 1554
0.78125 -0.78125 55 – – 16.47058868 26 1554
0.78125 -0.78125 55 – – 16.47058868 26 1554
0.78125 -0.78125 55 – – 16.47058868 26 1554
0.78125 -0.78125 47 – – 16.47058868 26 1554
0.78125 -0.78125 47 – – 16.47058868 26 1554
0.78125 -0.78125 47 – – 16.47058868 26 1964.25
14.0625 -0.78125 47 – – 16.47058868 26 1964.25
14.0625 -0.78125 47 – – 16.47058868 26 1964.25
14.0625 -0.78125 47 – – 16.47058868 27.5 1964.25
14.0625 -0.78125 47 – – 16.47058868 27.5 1964.25
14.0625 -0.78125 47 – – 9.01960754 27.5 1964.25
14.0625 -0.78125 47 – – 9.01960754 27.5 1964.25
14.0625 -0.78125 47 – – 9.01960754 27.5 1964.25
14.0625 -0.78125 19 – – 9.01960754 27.5 1964.25
14.0625 -0.78125 19 – – 9.01960754 27.5 1964.25
14.0625 -0.78125 19 – – 9.01960754 27.5 2071.75
14.0625 -0.78125 19 – – 9.01960754 27.5 2071.75
0 -0.78125 19 – – 9.01960754 27.5 2071.75
0 -0.78125 19 – – 9.01960754 27 2071.75
0 -0.78125 19 – – 9.01960754 27 2071.75
0 -0.78125 19 – – 9.01960754 27 2071.75
0 -0.78125 19 – – 9.01960754 27 2071.75
0 -0.78125 19 – – 9.01960754 27 2071.75
0 -0.78125 16 – – 9.01960754 27 2071.75
0 -0.78125 16 – – 9.01960754 27 2071.75
0 -0.78125 16 – – 9.01960754 27 1662.75
0 -0.78125 16 – – 9.01960754 27 1662.75
17.968 -0.78125 16 – – 9.01960754 27 1662.75
17.968 -0.78125 16 – – 9.01960754 27 1662.75
17.968 -0.78125 16 – – 9.01960754 8.5 1662.75
17.968 -0.78125 16 – – 42.35294342 8.5 1662.75
17.968 -0.78125 16 – – 42.35294342 8.5 1662.75
17.968 -0.78125 16 – – 42.35294342 8.5 1662.75
17.968 -0.78125 16 – – 42.35294342 8.5 1662.75
17.968 -0.78125 90 – – 42.35294342 8.5 1662.75
17.968 -0.78125 90 – – 42.35294342 8.5 2612.25
17.968 -0.78125 90 – – 42.35294342 8.5 2612.25
8.5937 -0.78125 90 – – 42.35294342 8.5 2612.25
8.5937 -0.78125 90 – – 42.35294342 8.5 2612.25
8.5937 -0.78125 90 – – 42.35294342 36 2612.25
8.5937 -0.78125 90 – – 42.35294342 36 2612.25
8.5937 -0.78125 90 – – 9.01960754 36 2612.25
8.5937 -0.78125 90 – – 9.01960754 36 2612.25
8.5937 -0.78125 90 – – 9.01960754 36 2612.25
8.5937 -0.78125 14 – – 9.01960754 36 2612.25
8.5937 -0.78125 14 – – 9.01960754 36 2612.25
8.5937 -0.78125 14 – – 9.01960754 36 2326.25
8.5937 -0.78125 14 – – 9.01960754 36 2326.25
0 -0.78125 14 – – 9.01960754 36 2326.25
0 -0.78125 14 – – 9.01960754 26.5 2326.25
0 -0.78125 14 – – 9.01960754 26.5 2326.25
0 -0.78125 14 – – 9.01960754 26.5 2326.25
0 -0.78125 14 – – 9.01960754 26.5 2326.25
0 -0.78125 14 – – 9.01960754 26.5 2326.25
0 -0.78125 17 – – 9.01960754 26.5 2326.25
0 -0.78125 17 – – 9.01960754 26.5 2326.25
0 -0.78125 17 – – 9.01960754 26.5 2145.75
0 -0.78125 17 – – 9.01960754 26.5 2145.75
17.1875 -0.78125 17 – – 9.01960754 26.5 2145.75
17.1875 -0.78125 17 – – 9.01960754 15 2145.75
17.1875 -0.78125 17 – – 9.01960754 15 2145.75
17.1875 -0.78125 17 – – 19.6078434 15 2145.75
17.1875 -0.78125 17 – – 19.6078434 15 2145.75
17.1875 -0.78125 17 – – 19.6078434 15 2145.75
17.1875 -0.78125 17 – – 19.6078434 15 2145.75
17.1875 -0.78125 20 – – 19.6078434 15 2145.75
17.1875 -0.78125 20 – – 19.6078434 15 2145.75
17.1875 -0.78125 20 – – 19.6078434 15 2628.75
12.5 -0.78125 20 – – 19.6078434 15 2628.75
12.5 -0.78125 20 – – 19.6078434 15 2628.75
12.5 -0.78125 20 – – 19.6078434 26.5 2628.75
12.5 -0.78125 20 – – 19.6078434 26.5 2628.75
12.5 -0.78125 20 – – 9.01960754 26.5 2628.75
12.5 -0.78125 20 – – 9.01960754 26.5 2628.75
12.5 -0.78125 20 – – 9.01960754 26.5 2628.75
12.5 -0.78125 12 – – 9.01960754 26.5 2628.75
12.5 -0.78125 12 – – 9.01960754 26.5 2628.75
12.5 -0.78125 12 – – 9.01960754 26.5 2255.5
12.5 -0.78125 12 – – 9.01960754 26.5 2255.5
0 -0.78125 12 – – 9.01960754 26.5 2255.5
0 -0.78125 12 – – 9.01960754 27 2255.5
0 -0.78125 12 – – 9.01960754 27 2255.5
0 -0.78125 12 – – 18.4313736 27 2255.5
0 -0.78125 12 – – 18.4313736 27 2255.5
0 -0.78125 12 – – 18.4313736 27 2255.5
0 -0.78125 12 – – 18.4313736 27 2255.5
0 -0.78125 83 – – 18.4313736 27 2255.5
0 -0.78125 83 – – 18.4313736 27 2255.5
0 -0.78125 83 – – 18.4313736 27 2505
13.2812 -0.78125 83 – – 18.4313736 27 2505
13.2812 -0.78125 83 – – 18.4313736 27 2505
13.2812 -0.78125 83 – – 18.4313736 36 2505
13.2812 -0.78125 83 – – 18.4313736 36 2505
13.2812 -0.78125 83 – – 9.01960754 36 2505
13.2812 -0.78125 83 – – 9.01960754 36 2505
13.2812 -0.78125 83 – – 9.01960754 36 2505
13.2812 -0.78125 13 – – 9.01960754 36 2505
13.2812 -0.78125 13 – – 9.01960754 36 2505
13.2812 -0.78125 13 – – 9.01960754 36 2580.75
0 -0.78125 13 – – 9.01960754 36 2580.75
0 -0.78125 13 – – 9.01960754 36 2580.75
0 -0.78125 13 – – 9.01960754 15 2580.75
0 -0.78125 13 – – 9.01960754 15 2580.75
0 -0.78125 13 – – 9.01960754 15 2580.75
0 -0.78125 13 – – 9.01960754 15 2580.75
0 -0.78125 13 – – 9.01960754 15 2580.75
0 -0.78125 15 – – 9.01960754 15 2580.75
0 -0.78125 15 – – 9.01960754 15 2580.75
0 -0.78125 15 – – 9.01960754 15 2232.75
0 -0.78125 15 – – 9.01960754 15 2232.75
20.3125 -0.78125 15 – – 9.01960754 15 2232.75
20.3125 -0.78125 15 – – 9.01960754 15 2232.75
20.3125 -0.78125 15 – – 9.01960754 18.5 2232.75
20.3125 -0.78125 15 – – 24.31372643 18.5 2232.75
20.3125 -0.78125 15 – – 24.31372643 18.5 2232.75
20.3125 -0.78125 15 – – 24.31372643 18.5 2232.75
20.3125 -0.78125 15 – – 24.31372643 18.5 2232.75
20.3125 -0.78125 67 – – 24.31372643 18.5 2232.75
20.3125 -0.78125 67 – – 24.31372643 18.5 2232.75
20.3125 -0.78125 67 – – 24.31372643 18.5 2943.25
7.03125 -0.78125 67 – – 24.31372643 18.5 2943.25
7.03125 -0.78125 67 – – 24.31372643 18.5 2943.25
7.03125 -0.78125 67 – – 24.31372643 36.5 2943.25
7.03125 -0.78125 67 – – 24.31372643 36.5 2943.25
7.03125 -0.78125 67 – – 9.01960754 36.5 2943.25
7.03125 -0.78125 67 – – 9.01960754 36.5 2943.25
7.03125 -0.78125 67 – – 9.01960754 36.5 2943.25
7.03125 -0.78125 12 – – 9.01960754 36.5 2943.25
7.03125 -0.78125 12 – – 9.01960754 36.5 2943.25
7.03125 -0.78125 12 – – 9.01960754 36.5 2617.75
7.03125 -0.78125 12 – – 9.01960754 36.5 2617.75
0 -0.78125 12 – – 9.01960754 36.5 2617.75
0 -0.78125 12 – – 9.01960754 36.5 2617.75
0 -0.78125 12 – – 9.01960754 15 2617.75
0 -0.78125 12 – – 9.01960754 15 2617.75
0 -0.78125 12 – – 9.01960754 15 2617.75
0 -0.78125 12 – – 9.01960754 15 2617.75
0 -0.78125 12 – – 9.01960754 15 2617.75
0 -0.78125 17 – – 9.01960754 15 2617.75
0 -0.78125 17 – – 9.01960754 15 2617.75
0 -0.78125 17 – – 9.01960754 15 2222
17.9687 -0.78125 17 – – 9.01960754 15 2222
17.9687 -0.78125 17 – – 9.01960754 15 2222
17.9687 -0.78125 17 – – 9.01960754 11 2222
17.9687 -0.78125 17 – – 9.01960754 11 2222
17.9687 -0.78125 17 – – 27.45098114 11 2222
17.9687 -0.78125 17 – – 27.45098114 11 2222
17.9687 -0.78125 17 – – 27.45098114 11 2222
17.9687 -0.78125 76 – – 27.45098114 11 2222
17.9687 -0.78125 76 – – 27.45098114 11 2222
17.9687 -0.78125 76 – – 27.45098114 11 3073.75
17.9687 -0.78125 76 – – 27.45098114 11 3073.75
8.59375 -0.78125 76 – – 27.45098114 11 3073.75
8.59375 -0.78125 76 – – 27.45098114 11 3073.75
8.59375 -0.78125 76 – – 27.45098114 36.5 3073.75
8.59375 -0.78125 76 – – 9.01960754 36.5 3073.75
8.59375 -0.78125 76 – – 9.01960754 36.5 3073.75
8.59375 -0.78125 76 – – 9.01960754 36.5 3073.75
8.59375 -0.78125 76 – – 9.01960754 36.5 3073.75
8.59375 -0.78125 12 – – 9.01960754 36.5 3073.75
8.59375 -0.78125 12 – – 9.01960754 36.5 2889
8.59375 -0.78125 12 – – 9.01960754 36.5 2889
0 -0.78125 12 – – 9.01960754 36.5 2889
0 -0.78125 12 – – 9.01960754 36.5 2889
0 -0.78125 12 – – 9.01960754 15 2889
0 -0.78125 12 – – 9.01960754 15 2889
0 -0.78125 12 – – 9.01960754 15 2889
0 -0.78125 12 – – 9.01960754 15 2889
0 -0.78125 12 – – 9.01960754 15 2889
0 -0.78125 15 – – 9.01960754 15 2889
0 -0.78125 15 – – 9.01960754 15 2889
0 -0.78125 15 – – 9.01960754 15 2436.5
0 -0.78125 15 – – 9.01960754 15 2436.5
18.75 -0.78125 15 – – 9.01960754 15 2436.5
18.75 -0.78125 15 – – 9.01960754 20.5 2436.5
18.75 -0.78125 15 – – 9.01960754 20.5 2436.5
18.75 -0.78125 15 – – 25.49019623 20.5 2436.5
18.75 -0.78125 15 – – 25.49019623 20.5 2436.5
18.75 -0.78125 15 – – 25.49019623 20.5 2436.5
18.75 -0.78125 15 – – 25.49019623 20.5 2436.5
18.75 -0.78125 70 – – 25.49019623 20.5 2436.5
18.75 -0.78125 70 – – 25.49019623 20.5 3145.75
18.75 -0.78125 70 – – 25.49019623 20.5 3145.75
10.1562 -0.78125 70 – – 25.49019623 20.5 3145.75
10.1562 -0.78125 70 – – 25.49019623 20.5 3145.75
10.1562 -0.78125 70 – – 25.49019623 37.5 3145.75
10.1562 -0.78125 70 – – 9.01960754 37.5 3145.75
10.1562 -0.78125 70 – – 9.01960754 37.5 3145.75
10.1562 -0.78125 70 – – 9.01960754 37.5 3145.75
10.1562 -0.78125 70 – – 9.01960754 37.5 3145.75
10.1562 -0.78125 12 – – 9.01960754 37.5 3145.75
10.1562 -0.78125 12 – – 9.01960754 37.5 3145.75
10.1562 -0.78125 12 – – 9.01960754 37.5 3091.5
0 -0.78125 12 – – 9.01960754 37.5 3091.5
0 -0.78125 12 – – 9.01960754 37.5 3091.5
0 -0.78125 12 – – 9.01960754 15 3091.5
0 -0.78125 12 – – 9.01960754 15 3091.5
0 -0.78125 12 – – 9.01960754 15 3091.5
0 -0.78125 12 – – 9.01960754 15 3091.5
0 -0.78125 12 – – 9.01960754 15 3091.5
0 -0.78125 12 – – 9.01960754 15 3091.5
0 -0.78125 12 – – 9.01960754 15 3091.5
0 -0.78125 12 – – 9.01960754 15 2713.25
0 -0.78125 12 – – 9.01960754 15 2713.25
17.9687 -0.78125 12 – – 9.01960754 15 2713.25
17.9687 -0.78125 12 – – 9.01960754 30 2713.25
17.9687 -0.78125 12 – – 9.01960754 30 2713.25
17.9687 -0.78125 12 – – 25.09803963 30 2713.25
17.9687 -0.78125 12 – – 25.09803963 30 2713.25
17.9687 -0.78125 12 – – 25.09803963 30 2713.25
17.9687 -0.78125 12 – – 25.09803963 30 2713.25
17.9687 -0.78125 67 – – 25.09803963 30 2713.25

[Mantas]

Been there, done that. Timing belt is in good condition, not loose, mechanical timing is right. Timing is controlled only by ECU, distributor does not rotate. CYP/TDC/CKP sensors resistances are within specs, no CEL. Can timing be still bad? Possibly timing can be too advanced on moments of sudden acceleration, I even have sensor logs the moments of bucking, including timing advance numbers, but i can’t say if timing that ECU chooses to set is right or not at these moments. As I understand right input from many various sensors is important for ECU to set the right timing. Maybe some sensor can be “half bad” and sends wrong data, but not enough “wrong” to set a CEL? On idle timing is 12 degrees – as it should be (OBD2 scantool shows that, not a timing light, but i’m pretty sure this data is true). One thing I’m sure of – sparkplug in 2-nd cylinder ir much whiter that the other three, take a look: http://i39.tinypic.com/2vxlqu0.jpg and this is most probably the core of the problem. Probably 2-nd cylinder gets leaner mixture because of something (no vacuum leak I can find) or it has some machanical issue (but shows good compression – 13.5 bars (195PSI)). Don’t know where to look and what to do…

[Author]

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