Quote:
Originally Posted by mr_robot
2 days in a row no cold start misfire and these have been the coldest days ever.
The only change done recently was I switched from Castrol 0w-40 to Liqui Moly 5w-40.
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Not sure if this is of help, but in another thread regarding poss levers issue, with the symptoms being rough idle and hard start, when I asked for advice my ex BMW indi stated that the vanos solenoids with their small holes are quite sensitive to getting clogged up or poor oil quality and are his first point to check.
As they regulate timing it's possible that this is the problem?
It's apparently a DIY to pull em out (4) and give them a clean.