GMC Repair: 1987 GMC Jimmy Running Rough, e mail address, distributer cap

Question
My 1987 GMC Jimmy Full Size recently started running rough and it seemed to be sluggish and lacking power. My first instinct was the ignition system. The distributer had been replaced about 6 months ago so I went ahead and replaced the spark plugs, wires, distributer cap/rotor. However, the truck still seems to lack it's usual power and is simply running rough. Do you have any ideas? I did re-route the ignition wires to keep them off of the engine better but it's still stock wires could that be the problem? My only other guess, and it's really just a guess, would be fuel filter. However, the extreme lack of power has only occured since I replaced the wires/plugs/cap. The engine is the 5.7 EFI V8.

Thank you for any help you can give.

Matt

Answer
Very remote possibility on the fuel filter as the cause.

Recheck your plug wires with an OHM meter as you may have accidently broke off the connector within the rubber boot at the spark plug(s).

Most likely something wrong in the distributor when you reassembled it. Recheck it or replace it with a new one or send it to me and I will test it and let you know what's wrong with it.

Are you sure you have the timing cORRECT ?. Recheck it.


PLEASE keep your questions on the ALLEXPERTS BOARD because without it, Us volunteers would NOT be needed.

I do not have a staff of people helping me answer your questions, I do it all by myself, except some typing help from my wife or son as the old fingers just don't flex as well as they used to. Therefore, Due to being retired and an OLD computer, That is so old it does not even have SPELL CHECKER on it and being on a dial-up connection,  Please excuse the TYPO'S.

I do my best to respond to questions within 4 to 5 hours, But  due to the volume of questions I receive on a daily basis I answer them ASAP. If you require a faster response you can e-mail me directly at the below e-mail address as I check it more frequently.:

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