Quote:
Originally Posted by Maxem
The warm fuel pressure was 45psi. Cold wasn't checked as I couldn't leave the car there overnight to do that.
I must say that after the tech (very experienced guys) fettled everything it ran a whole lot nicer throughout the cold / warm cycle. Just this final thing to sort out and it is barely perceptible but if I can sort it out without spending big on chasing it then that would be a great result. I don't mind spending on new parts but it is the diagnosis that usually costs the dollars chasing ghosts if you let the pro's loose on it for days.
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there are a lot of "if's" here in my reply.
i think it has been determined that you do not have lambda. if that is the case then you do not have the 090 WUR. IF you have the 089 then the pressures are 3.0bar with no vacuum to the WUR and 3.6bar wiht vacuum.
so IF the pressure was checked with the engine running the pressure is too low. IF it was not running the pressure is correct but also needs to be checked with it running.
i doubt this is your problem.
i would look at timing and advance along with air leaks.
check all the intake bolts. they can come lose.
injector seals can leak and are easy to replace.
since it feels like a miss like on one cylinder i would look for leaks at individual cyclinders along with plug wires.
if you do have an air leak and he adjusted the mixture ne is just covering it up.
13.6 is OK as long as it does not surge at idle or the RPM's dont dip donw when you let off the gas. since i can set mixture me personally i would richen it just to see what it does.
just because a plug wire does not arc and spark does not mean its good. you can also check resistance of each wire.