Engine slightly bucking under light load
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Car: 1991 Camaro Z28
Engine: 357, Canfield heads, solid roller,
Transmission: Upgraded 03 Cobra T56
Axle/Gears: 9" 3.50 gears and Detroit Locker
Engine slightly bucking under light load
I've noticed that while cruising at a constant speed the engine has a very slight hesitation or buck to it. If I press the throttle down just the slightest amount, it goes away. I did notice that after using all the Mobil gas in the tank and filling with Citgo gas it got much better.
Motor is a 350 sbc, 650 mighty demon carb, Canfield heads, 20 degrees initial timing, 35 total, 10 degrees vacuum advance. Primary jets are 72's. To cruise at 50 at 1500 rpm I'm barely on the throttle. Its little enough that how the idle is tuned affects how it drives.
Motor is a 350 sbc, 650 mighty demon carb, Canfield heads, 20 degrees initial timing, 35 total, 10 degrees vacuum advance. Primary jets are 72's. To cruise at 50 at 1500 rpm I'm barely on the throttle. Its little enough that how the idle is tuned affects how it drives.
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Car: 88 Trans Am
Engine: 350
Transmission: T5
Axle/Gears: Posi
Re: Engine slightly bucking under light load
you probably have too much timing advance. Mine did the same thing so i retarded the timing a few degrees and it went away
#3
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Car: 1991 Camaro Z28
Engine: 357, Canfield heads, solid roller,
Transmission: Upgraded 03 Cobra T56
Axle/Gears: 9" 3.50 gears and Detroit Locker
Re: Engine slightly bucking under light load
Thanks. I'll try taking 5 degrees of vacuum advance out of it.
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Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: Engine slightly bucking under light load
How old are your plug wires? Make sure they are all good and not burnd or arcing to ground.
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