Question about Cars & Trucks
With that kind of mileage, the motor is worm out mechanically
To to go into all that can be tested & data looked at, wouldn't
serve either of us well
Iam going to pass as I don't think your going to solve much
going forward & I would have installed no parts
I would have worked one issue at a time starting with what is
left of the valves,cylinder leak down,cylinder contribution,etc
I can only guess,but it sound like it was never diagnosed & many
times it was decided to continue to install parts,would not have been my choice as your mechanic
Posted on Nov 26, 2014
If you have never changed you oxygen sensors they're way over due. If you have a scan tool that shows data you can watch the signal from each sensor. When the engine is fully warmed up theyour should be constantly fluctuating. If you can't afford to replace all four at once, start with bank one sensor 2 and see if that solves your problem.
Posted on Nov 26, 2014
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Posted on Jan 02, 2017
Test all injector. Must be with in specification. If not replace it.
Posted on Feb 27, 2013
The cylinder misfires cause lean or rich
A constant lean on fuel trim, is a rich condition
driven lean by pcm to correct
If two cylinder are affected & are together or maybe
not ,then smoke the intake for vacuum leaks
A leaking injector is obviously a rich senerio
Converter only works with the O2 Sesnors to report
back the rich or lean to pcm
You need to get rid of the misfires before any fuel control
returns to normal
Posted on Mar 08, 2013
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