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Old 03-19-2010, 02:38 PM
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Re: 4.3 Engine problem

Quote:
Originally Posted by vtmecheng View Post
Thanks for the reply.
1. No check engine lights
2. I have not checked fuel pressure yet
3. Engine misfire seems to be my major problem but only under load as stated above
4. 15k miles on tuneup
5. All parts but the wires were AC delco. Everything seems ok but looks can be deceiving.
95 with a W engine code fuel pressure specs are 55/61 lbs of pressure.

Put a fuel pressure gauge on it and drive it for 20 -30 minutes and watch all pressure readings and post back pressures.
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