Walkyrie_Engineering Posted August 21, 2022 Share Posted August 21, 2022 I just recently replaced the head on our MP8. it went together fairly well, but when re-installing the timing idler gear and the cam shaft I accidently wiped off our timing mark on the backing plate, I had the cam set with the TDC mark in-between the hash marks but I am having doubts of whether or not i had it set on the driver side hash mark so now I'm paranoid I may be one tooth off in timing. the engine starts and runs, the first couple seconds after it starts its nice and smooth then it does a step down that its always done (like maybe a load kicks on or something) and it gets a clacking, it almost sounds like valve tap but it changes in frequency and smooths out a bit after idling for about a minute it gets a rough surging idle, there's a slight hesitation in acceleration but when idled up it runs smooth. and there is also a little bit of white smoke coming out of the exhaust. Am I off on timing a tooth, or could it be Injector rattle, or the new injectors need programed, or the valves need re adjusted? any advice is greatly appreciated. Quote Link to comment Share on other sites More sharing options...
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