[Mantas]

Nope, distributor is OEM. Valve clearences are up to spec. Calibrated TPS, now it reads exatctly 0.5V at closed throttle and 4.5V at WOT, but that did not change anything of course.

[Mantas]

TPS reads 0.391V on closed throttle and 4.6V at WOT. Manual states 0.5 and 4.5 are normal values, maybe I should adjust it?

[Mantas]

TPS reads 0.391V on closed throttle and 4.6V at WOT. Manual states 0.5 and 4.5 are normal values, maybe I should adjust it?

[Mantas]

Well, new long block actually solved pretty much nothing. Now compression is 220PSI across the board, and this one consumes much less oil. And that’s that. But idle is still rough as it was before. Car jerks/bucks very harsh on acceleration when engine is cold. After a mile when engine gets warmer, jerking/bucking on acceleration becomes less noticeable, buts it’s there all the time. When in neutral, idle gets low, almost stalls, then slowly returns up to spec. After few more miles idle becomes normal, doesn’t get low and is just rough. Tried a few more things – known good ECT sensor, IACV and PCM/ECM. To no improvement at all. There is no air in coolant, and no CEL. Maybe somebody has any ideas on what to check next?

[Mantas]

Well, new long block actually solved pretty much nothing. Now compression is 220PSI across the board, and this one consumes much less oil. And that’s that. But idle is still rough as it was before. Car jerks/bucks very harsh on acceleration when engine is cold. After a mile when engine gets warmer, jerking/bucking on acceleration becomes less noticeable, buts it’s there all the time. When in neutral, idle gets low, almost stalls, then slowly returns up to spec. After few more miles idle becomes normal, doesn’t get low and is just rough. Tried a few more things – known good ECT sensor, IACV and PCM/ECM. To no improvement at all. There is no air in coolant, and no CEL. Maybe somebody has any ideas on what to check next?

[Mantas]

if that exaust leak is before primary O2 sensor, fix that first, because it may be a problem

[Mantas]

if that exaust leak is before primary O2 sensor, fix that first, because it may be a problem

[Mantas]

You are getting no spark and going to check for vac leaks? 🙂 I bet it could be a bad ignitor. Check this out:

[Mantas]

You are getting no spark and going to check for vac leaks? 🙂 I bet it could be a bad ignitor. Check this out:

[Mantas]

[IMG]http://i62.tinypic.com/zvaih1.jpg[/IMG]

[Mantas]

[IMG]http://i62.tinypic.com/zvaih1.jpg[/IMG]

[Mantas]

[IMG]http://i61.tinypic.com/5dm97r.jpg[/IMG]

[Mantas]

[IMG]http://i61.tinypic.com/5dm97r.jpg[/IMG]

[Mantas]

[IMG]http://i57.tinypic.com/124xymd.jpg[/IMG]

[Mantas]

[IMG]http://i57.tinypic.com/124xymd.jpg[/IMG]

[Author]

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