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What causes backfiring during acceleration?

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Old 07-21-2000, 05:30 PM
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What causes backfiring during acceleration?

I think its from a lean condition.

Also, would a bad ECM on an LG4 have too much of an effect?

And, whats that ticking noise i always hear under acceleration?

Thanks
Old 07-21-2000, 07:50 PM
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Car: yep
Engine: uhuh
Transmission: sure does
Is it a steady pop pop pop pop pop

ONLY when on the throttle.

Or is it just a pop and then its OK.??

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Old 07-22-2000, 12:23 AM
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Its just an occasional pop.

Only when under load also. No popping just reving. I got it to stop a little bumping up the timing.

Yeah theres a ticking in the valve train area, and someone else suggested a valve spring.

Thanks
Old 07-22-2000, 12:25 AM
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My car does that when I apply throttle at less than 2000 rpms and it gets worse as it heats up. It becomes unbearable after a half hour or more of driving. What are all the causes to check in order to fix this? thanks

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Old 07-23-2000, 01:21 AM
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BTTT
Old 07-23-2000, 01:50 AM
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No one stays up in the wee-hours of the night waiting to help their fellow third-genner?

Whats wrong with you people?

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Next project - spray can investment.
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Old 07-23-2000, 02:19 AM
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My previous Camaro ('85 MPFI V6) use to do the pop when I floored it. As it began to run worse I took it in for a tune up. The mechanic figured I had water in my fuel tank, threw in a bottle of water-b-gone and a new fuel filter and it ran great after with no pops. It could be that simple! Later, Teddy Z '84Z28
Old 07-23-2000, 04:16 AM
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Yeah ill get a fuel filter and run some fuel system cleaner through it.

Im gonna be busy tomorrow.

Thanks
Old 07-24-2000, 08:58 PM
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Well it was the plugs, i took out the **** Bosch supers, and put in some regular AC Delcos. Also a new fuel filter.
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