misfiring.. help
Thread Starter
5th Gear
Joined: Jul 2005
Posts: 5
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misfiring.. help
hey, i have 2000 vette hard top. codes read po200 and po300.. new plugs and wires. one new coil. this is driving me crazy. please help if u can ?? no clue why or how too fix it?? thanx mike
Drifting
Joined: Jul 2002
Posts: 1,613
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From: Spring Tx
Plugs and wires, I understand, what made you change a coil? Mechanical problems can cause a misfire code, bent pushrod, broken valve spring to mention the most common.If you havent done it already, pull one plug at a time till you pinpoint which cylinder isn't firing, then pull the coil packs and valve cover for that side and do a visual inspection.
Drifting
Joined: Jul 2002
Posts: 1,613
Likes: 0
From: Spring Tx
Could be a bad injector, or a broken wire in the harness[eeek} easy to tell if its a bad injector, switch #8 with another, pull the injector straight out and make sure you lube the o-rings and place them straight back in. If the missing cylinder moves to the new location you have a bad injector.
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