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Old 08-30-2007, 06:06 PM   #1
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Default backfiring on start

my 1992 bonneville se jus had a timing chain put on it. but its still backfiring and wont stay started. can some one please tell me wtf!! is goin on. some say i need a new computer. i dont know
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Old 08-30-2007, 06:13 PM   #2
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Is it backfiring through the intake?

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Old 08-30-2007, 06:16 PM   #3
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tail pipe
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Old 08-31-2007, 09:40 AM   #4
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Who put the chain on?

There are two sets of dots that get lined up . Cam to balancer (not important for this psot) and cam to crank. If you did it..did you take pics of the dots?
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Old 08-31-2007, 10:32 AM   #5
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THE SHOP PUT IT ON HE SAID ITS STILL SOME SERIOUS BACKFIRING GOIN ON. ITS PISSING ME OFF ITS BEEN IN THERE FOR 3 WEEKS
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Old 08-31-2007, 10:37 AM   #6
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The first thing I would suspect is the timing chain install, which is what Bill is getting at. Before you pay the shop to do anything else, I would make them revisit that.
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Old 08-31-2007, 11:12 AM   #7
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A backfire after a chain is typically the dots not lining up.

A misfire would be a misrouted plug wire. However since they didn't do wires..they shouldn't be off.
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Old 08-31-2007, 08:22 PM   #8
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It was backfiring BEFORE going to the shop, if I understand correctly.

I'd be checking the Harmonic Balancer first.
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Old 08-31-2007, 09:30 PM   #9
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yea it was cuz it cut off and jus would not start back. the timing was gone and i seen the gear it was missing alot of teeth
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Old 09-03-2007, 12:14 AM   #10
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so u really think the harmonic balancer is a issue here???
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