Please help heavy vibrate on accelerate

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Dec 7, 2013, 05:17 PM

#16

MyronGainz

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Quote:

Originally Posted by Big Lex

Re vibration. My evo is casing me pain. as i accelerate up to 5-6 rpm the entire engine vibrates so violently that it cause my ac pipe to break. the sound is coming from the engine room. but cant pin point the exact location. i recently change the timing belt. the car runs fine when driving at lower rpms.

I can almost guarantee that your timing belt was installed incorrectly. The marks on the oil pump sprocket will line up, but if the balance shafts are not "in phase," you will experience the problem you are having.

The solution is to rotate the oil sprocket three times at the very least, until when you rock the sprocket (as in move it forward or backwards slightly), the timing mark "falls back" onto the mark on the block.

Good luck