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#1
09-09-2007, 11:26 AM
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Backfiring Problem here
Here is the problem.I have a 2000 Jeep GC Laredo 4.0. I thought I might of had a cracked head gasket because of the overheating and compression tests I did. So I replaced the head gasket, finished the job. Then when I went to start it,it starts fine, but backfires through the throttle body now. It sounds like a timing issue, but there is no way, because I didnt even take the timing cover off. The only thing I did was take the push rods, rockers, fulcrum and bridges off, and seperated acordingly to where they go back. When I put it back to gether, I put the #1 cyl at TDC and then installed the hardware and torqued everything to specs. Should I have put every piston to TDC when I put the hardware back on instead of just doing the #1 cyl? Is there any tests I can do to see if its out of timing, I am afraid to start it because It might catch fire or bend a valve or something like that. any help would be great.
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#2
09-09-2007, 09:05 PM
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Re: Backfiring Problem here
Did you correct the distributor when you turned the engine over to #1?
__________________
ASE Master Certified before the age of 20 Current Cars: 2001 Chevy Silverado 1500 Z71 5.3L 1996 Acura Integra LS B18 1.8L Past Cars: 1990 Buick Estate Wagon 5.0L 1987 Chevy S10 2.5L Tec Four 1995 Pontiac Grand Am 2.3 Quad 4 1996 Jeep Grand Cherokee Limited 5.2L AWD 1991 Ford Tempo L 2.3L 1992 Buick LeSabre 3.8L 1997 Buick Century 3.1L 1996 Lumina APV GT 3.4L 2006 Ford Escape 3.0L XLT
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#3
09-09-2007, 09:37 PM
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Re: Backfiring Problem here
it is a distributerless system. Has the coils. Thats what me and my dad was thinking, but its a coil system. I know when I had my old race car, it would backfire through the carb, and that was because of the timing. The only thing I think of is when I turned it to TDC at,there might have been slack in the chain, and it jumped a tooth. But it starts up fine. This thing is killing me.
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