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Jan 27, 2009 | 06:17 PM

2000lsxs10

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help!!!!!!

i have a freind with a 2002 chevy 1500 witha 5.3. the motor starter running real bad not reving over 2k? so his uncle who must be a bad machanic. told him he had dead cylinders. so he bought a used motor and its doing the same thing. bty the other motor was complete!!! so it was a total swap.... and suggestions or ifyou need anymore info ill be back on tomorrow. thanks guys!!!!!!!

Jan 27, 2009 | 06:28 PM

conan

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From: Back in the Burg

Did he check the fuel pressure? Check the cats to see if there cloged?

Jan 27, 2009 | 09:09 PM

98TAjwh

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so much for the "dead cylinders"

definitely need more info, does the throttle open up when you push on the gas? maybe too much slack in the cable? does it idle weird? hard to start?

Jan 27, 2009 | 09:19 PM

Full-Force

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From: Upstate of SC

As much room as those trucks have under the hood and around the engine someone needs a kick in the butt for not doing a compression test on it.

I bet anything its a fuel delivery problem. Put a gauge on it. Jeez

Jan 28, 2009 | 04:26 AM

orangeapeel

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From: Justin, TX

My guess would be something is clogged or you are running about 8psi for fuel pressure. Check the intank pump if you can as well. Probably didnt swap that out with the new motor. It could be something as little as a filter that is jacked up. Also if he is a bad mechanic he may not know that the fuel pressure should be in the 40's and could have used a carb style fuel delivery method. Which would totally not work. Actually it would probably blow up the filter under that pressure and send peices all over the fuel delivery lines as well.

Jan 28, 2009 | 06:33 PM

2000lsxs10

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the fuel pressure is at 54 where is should be... have not checked the cats yet..... it is hard to start it does idel but seeems like it has a miss but no codes.... and when you floor it, it is not burning alll the fuel.... any more suggestions???????? still in desperet need of help!!!!!