I need to look into spark plug holes again, and all of them this time. Last time there was some oil in 1-2 of them, but not much, I just cleaned it. Can oil actually get into the cylinder and foul spark plug? I mean spark plug is torqued, so how would the oil get in there past the spark plug thread which is kinda long and tightened....
I say this because I get bad vibrations and rpm floats on cold start and then after drive it becomes almost smooth and rpm rock steady, every time I drive from cold start.
Almost as if something either burns off or warms up or lubricates I don't know.
I will check oil filter too and both Vanos solenoids will get replaced soon (one has fluctuation).
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Current: 2017 F30 330e PHEV
Past: 2007 BMW E93 N53 Convertible
Last edited by schriss; 10-17-2019 at 02:36 PM..
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