About a week ago i was going over to my buddies house about a block away. turn the corner and out of no where my tach pins for about 10-15 seconds (not even touching the gas at this point) goosed the throttle a few times to get it down. Now the car is barely running and has top end knock, checked all the rockers and nothing is broken, one rocker seems "sharp" on the end, different from the others. Any ideas? '87 325is M20b25
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