Nissan Smoker

[college man]

p0300 random cylinder misfire 1-4 was this condition corrected?_x000D_
p0335 crank pos

Topic

[Lonestartech]

When the car was picked up after the Cats were replaced and after the other repairs were complete it ran great, no check engine light, no misfire, was test driven 3 times before the customer took it home. She had it one day.

[college man]

is the car consuming alot of oil or losing coolant?_x000D_
try doing a leak down test. is the smoke still present._x000D_
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http://www.youtube.com/watch?v=WgrfT0LF … plpp_video leak down

[EricTheCarGuy]

It’s interesting that it would happen after it left and things were fine.

[Lonestartech]

Alright, I ran a power balance test across all 4 cylinders using both injectors and coils and all rpm drops were even with each other across all cylinders. I checked oil level just because another tech had started to work on this and it’s been driving me

[dreamer2355]

Did you address the CEL issues?_x000D_
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What color is the smoke?_x000D_
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Do you have access to a scan tool with PID data?_x000D_

[college man]

I think the clue there is the pistons are wet. If the injectors are stuck_x000D_
open. the car can’t control fuel. my theory is that the injectors are leaking_x000D_
to much fuel into the cylinders. the o2 sensor does not pick up raw fuel._x000D_
the o2 sensor works off ox

[EricTheCarGuy]

[quote]Quoted From college man: _x000D_
_x000D_
I think the clue there is the pistons are wet. If the injectors are stuck_x000D_
open. the car can’t control fuel. my theory is that the injectors are leaking_x000D_
to much fuel into the cylinders. the o2 sensor does not pi

[Lonestartech]

I performed an injector balance test and all my drops were the same on fuel pressure and KOEO fuel pressure was within specs and steady. I was inspecting the cylinders again when we noticed something in each of the cylinders atop the pistons so I took a s

[dreamer2355]

Ugh, i wish i read your first post properly. I just noticed the 2.5 Altima sentence._x000D_
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You have the QR25DE engine with has issues with cat failure, piston ring issues as well as the butterfly screws been sucked from the intake into the engine. And to add

[richard thurfield sr]

[quote=”Lonestartech” post=29241]Greetings guys,_x000D_
_x000D_
I have a head scratcher here I could use some input on. Let me give you some history first. Vehicle is a 2003 Nissan Altima, 2.5L automatic, 114,000 miles. Came into the shop with check engine light on, running rough. Another tech here[/quote]

[richard thurfield sr]

[quote=”Lonestartech” post=29241]Greetings guys,_x000D_
_x000D_
I have a head scratcher here I could use some input on. Let me give you some history first. Vehicle is a 2003 Nissan Altima, 2.5L automatic, 114,000 miles. Came into the shop with check engine light on, running rough. Another tech here[/quote]

[Author]

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