Hi All,

I have the above car in for an oil change and now it's putting on the engine light with code P2029 Mixture format self adaptation (fuel trim). The fuel trim LTFT is 17% which suggests a vacuum leak, but i've checked all the usual suspects and all is fine. It also spits back a bit when cold but runs fine when warm. I know this car and have replaced all the vacuum pipes over the last few years. I know there are issues with these engines jumping the timing after an oil change, but I would have thought I would have a few more codes if that were the case. Plus the timing chain was replaced 25,000 km ago.The car has only done 124,000 km on the clock the same guy has it from new.

Any help on this would be much appreciated.
Regards Dominic.