I have a 1994 Jetta 2.0L 8V and am getting a "knocking" noise from the engine bay
. I could have sworn that it was the crank bearings but after changing them the noise was still there. It can only be heard from about 2200RPM and only in first, second and sometimes third gear. I am running an Autotech 270 cam and Q-Chip on an otherwise stock motor. A friend of mine has the same noise in his 2.0L but not as loud. Any ideas on the cause of this noise?
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