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08-21-2008, 10:10 AM
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#1 |
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Registered User
Join Date: Feb 2007
Location: central ky
Posts: 11
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Backfiring
Hey All,
I have a question thats probably just so painfully obvious, that i cant figure it out! On my 88 jimmy, when you rev it a bit in neutral, it pops and backfires a bit as the rpm decrease.It is also seeming to be a bit sluggish on acceleration. I just did an engine swap, and it did it with the old engine, too. I am assuming its probably the tps, or maybe even the throttle body itself. Has anybody else had this problem? Thanks |
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09-20-2008, 06:25 PM
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#2 |
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Happy to be here
 
Join Date: Mar 2000
Location: Cypress, TX
Posts: 39,021
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Re: Backfiring
Anyone?
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Follow me on Facebook and Instagram @N2trux.com Articles- "Jake" the 84 to 74 crewcab "Elwood" the77_Remix 85 GMC Sierra "Scarlett" "Refining Sierra" |
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09-21-2008, 02:32 AM
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#3 |
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Senior Member
Join Date: Aug 2004
Location: Everett, WA
Posts: 2,316
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Re: Backfiring
Backfires through the carb (TBI) or through the exhaust?
If exhaust, do you have any exhaust leaks? Leaks on the smog pumps or manifolds especially will cause some back firing as the RPM's drop.
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2009 Honda Fit CfC (bsf 44.9 mpg) 2000 Tahoe Limited 1991 GMC CrewCab Dually 2wd, will end up swb, not dually and replace CCswb below 1991 GMC CrewCab Dually 4x4, just going to fix things up for now 1982/1989 K5/GMC Jimmy 2wd 1987 GMC 1/2 ton swb 2wd Crew (sold) |
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09-22-2008, 07:46 PM
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#4 | |
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Chevys Kick A$$
Join Date: Jan 2005
Location: Zootown, MT
Posts: 12,699
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Re: Backfiring
Quote:
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*HOODS is what I answer too* -'79, '77, '88 Pickup Sold, '85 Camaro, '83 T/A, '81,'83,'90 K5 Blazer All Sold  -'79 3/4 ton "Big Yellow Bananna" Lifted 4spd. 39.5 TSL Swampers, The money Pit   -'86 K5 Blazer Silverado 6.2 4" lift 35"s -'95 Ext. Cab Shorty 4" Tuff Country rolling 35" M/T's -'83 Monte Carlo T-Tops. 126,500 Original Miles -LATER  I would rather push a Chevy then drive a ford!!
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