Piston #5 misfire
December 11th, 2011, 7:18 PM
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Piston #5 misfire
I have a 96 z71 with a 5.7 vortec engine.Check engine light is on so i took it to ABC abd the computer showed piston #5 misfire.Runs kinda rough when idling.Other than that cant really tell anything is wrong.What should i check?
December 12th, 2011, 5:09 AM
#2
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I had a similar deal with my 96 5.0 . With a lot of discussion and process of elimination- tune up, compresion check, fuel pressure check, and so on it turned out to be a sticking poppett valve on the injection spyder. Make sure the tuneup is good and run a few bottles of Chevron Techtron thur it .Might cure the problem if it's not a burned or sticking valve. If it turnes out to be the spyder an updated version is available on Amazon. Cost is in the $300's. Good luck and keep everyone updated.
Charlie
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blazer-man95
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November 7th, 2010 7:16 AM
