One of my cars is starting to have the marbles in a can sound at low RPM with a load on the engine. Sounds like pinging but it's a fresh rebuild. It's the same sign you're hearing cars when you run low octane fuel when you get the marbles in the canned sound.
Doing some searching I came across several instances where they mentioned timing being off.
I have never heard the pinging before until recently, so my guess is maybe it would probably go away if I reset Vanos adaptations and then probably come back
So if I want to run the Vanos test, should I run it now and it's current state or should I run it after I reset adaptations?
And would a successful vanos test mean that the engine is properly timed
I also had these Shadow codes. I never saw a check engine light but I decided to check codes today and saw these Shadow codes. Inlet Vanos retard valve errors
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