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Re: 97 M3 rough idle
Posted to Technical Discussion Forum on 11/7/2016

If the problem occurs with different vanos assemblies, either the problem isn't the vanos, or the timing is wrong somehow.

I reread your original post. 204-209 psi seems high for compression test, I looked up spec and it is 160 - 174 psi. High compression wi... Login to read more.