Backfiring? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 07-03-2003, 12:23 PM   #1
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Default Backfiring?

Hi
I've got a L36 3800 series ll and i just had my last tune up along with replacing the intake maifold after hydrolock. So the engine is fine now but my question is before and still right now when i start my car or rev my engine slightly it sounds like it backfires... I'm not sure if this is a common thing for this type of engine or i have a serious problem but i just got new plugs and a new O2 sensor. Any help would be greatly appreciated!

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Tubbs
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Old 07-03-2003, 09:23 PM   #2
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Default Re: Backfiring?

Quote:
Originally Posted by Tubby
Hi
I've got a L36 3800 series ll and i just had my last tune up along with replacing the intake maifold after hydrolock. So the engine is fine now but my question is before and still right now when i start my car or rev my engine slightly it sounds like it backfires... I'm not sure if this is a common thing for this type of engine or i have a serious problem but i just got new plugs and a new O2 sensor. Any help would be greatly appreciated!

Thanks in advance
Tubbs
does it make the sound when you come off the gas?? cause mine will do that every now and again
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Old 07-03-2003, 09:28 PM   #3
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Tubs, can you scan for codes? That'* one of those problems that will be nearly impossible to track down without scanning first.
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Old 07-07-2003, 06:03 PM   #4
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Ya it does occasionally happen when i let off the gas and how do I check the codes on a bonnie i know on my civic i can check it on the ecu? thanks for the replys
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