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Discussion Starter · #1 ·
I just purchased a 1968 Camaro. The engine is supose to be a 355(lopey cam,accel points distributor).Problem is when i try to shut the car off it diesels and blows smoke out of the carb. before it shuts off.What could this be?
 

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Does it have a MSD spark box in it? I know most people never put the diode inline of the 12v source that makes it diesel or have a lot of "run on"

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69 RS/SS 427 4.11's
2000 Z28 Navy Metallic LS1 6 Spd T-Tops
 

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Make sure idle speed is not to high and most important that the throotle return spring is strong enough

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GMPP 350 330hp Comp cam XE 274 Modified Vortecs B&M 3000 Holeshot Holley 750DP D.U.I.HEI Dist.3.73's Eaton Posi
 

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Primary throttle plates are opened too much.

Need to lower idle speed, if this doesn't work, then open secondaries just a hair, and lower primaries.

Otherwise, when shutting off car, leave it in gear, then turn off ignition.

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Everett 68/350/PG/11.90/115mph
 

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Discussion Starter · #5 ·
The car has a accel distributor.No ignition box.I set the timming to 6*BTDC with the vac. advance unplugged.I noticed when i hooked the vac.advance line back up,the timming did not change. Should i lower the timming? How do i adjust the carb? it`s a holley dual line? I`m not very skilled on adjusting carburators!!!!!
Thanks!
 
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