Backfire - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Rifter_Chevy · 09-19-2011, 10:04 PM

Hello all, so today on my way to work the truck started backfiring. Not real bad but definatly noticable. It only does it at above 20-30% throttle, if i keep my foot off it it runs smooth as butter. Doesnt do it at idle at all, does do it in neutral if i rev it up.

Background on truck, never backfired before ever. Owned for 9 months. Changed carb 2 months ago has been running fine since. Wires/plugs/HEI distrubutor all brand new 9 months ago when purchased. Checked/adjusted timing 2 months ago when i installed new carb.

Its a small block 350 all stock except edelbrock 650 AVS off road carb.

What do you think i should look at first?

09-19-2011, 10:04 PM	#1
Rifter_Chevy Registered User Join Date: Mar 2011 Location: Vancouver, Canada Posts: 107	Backfire Hello all, so today on my way to work the truck started backfiring. Not real bad but definatly noticable. It only does it at above 20-30% throttle, if i keep my foot off it it runs smooth as butter. Doesnt do it at idle at all, does do it in neutral if i rev it up. Background on truck, never backfired before ever. Owned for 9 months. Changed carb 2 months ago has been running fine since. Wires/plugs/HEI distrubutor all brand new 9 months ago when purchased. Checked/adjusted timing 2 months ago when i installed new carb. Its a small block 350 all stock except edelbrock 650 AVS off road carb. What do you think i should look at first? __________________ 1984 3/4 Ton Reg cab Longbox 4x4, Carbed 350/Turbo 400 Trans/205 T-Case



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