chevy monte carlo 1996 3.4 dohc need help to set camshafts after head replacemen

November 8, 2006 12:55am CST
after replacing front head that was cracked i set the timing belt with the marks i scribed on ran ok untill i turned a corner it sputterd then it started to run poorly.limped home checked timing marks had moved slightly reset marks still runs bad checked compression downe to 150 should be 190.
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