Backfire or Pop Pop at low held speed 35-45
March 1st, 2014, 05:59 AM
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Join Date: Dec 2013
Location: Thibodaux Louisiana
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Backfire or Pop Pop at low held speed 35-45
1970 Cutlass 350 (recently found out that it could potentially be a rally car) Dual Exhaust
Edlebrock Manifold
Holley 4150 Vacum Secondary 650cfm
Just got the carb tuned by a pro and timed by the same pro im at about 10-11 degrees advance and im running the distributor vacum line on the acceleration only vacuum has run much better and backfire has all but gone away and no bogging at all.
Sometime at op temp and cold when im barely holding the pedal at say about 40mph theres a low pop pop that comes out exhaust my spark plugs are the ac delco with 40gap any ideas on what that could be????
Edlebrock Manifold
Holley 4150 Vacum Secondary 650cfm
Just got the carb tuned by a pro and timed by the same pro im at about 10-11 degrees advance and im running the distributor vacum line on the acceleration only vacuum has run much better and backfire has all but gone away and no bogging at all.
Sometime at op temp and cold when im barely holding the pedal at say about 40mph theres a low pop pop that comes out exhaust my spark plugs are the ac delco with 40gap any ideas on what that could be????
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