Questions & Answers for: cause backfire carburetor

carburetor backfire 97 dyna lowrider backfire can be caused by a too lean idle screw adjustment on the carburetor.

...adjustment an new plugs It could be the speed of one carburetor is faster than the other. This causes the backfiring as well as forces one cylinder to run lean which causes the tapping noise.

...have a 1972 gran torino, it has a holly doublepumper,302 engine, it backfires through the carburator,what causes it to backfire? ...

...carburetor, adjust the setting to the left a couple of turns. This will lean out the gas mixture. If you have a fuel injector, have the system checked. The air filter could be clogged and the fuel ...

...the carborator Some carburetors can induce backfire due to the sensitivity of internal transitional passages. This condition cannot be corrected. Also the carburetor adjustments could be set too

...backfire thro carburetor from 1/2 to full speed , just did a valve job , set valves , clean carburetor , clean out gas tank and line new filter, check key in flywheel , didn't help,stell spit and ...

to tell you to check would be the exhaust manifold for an exhaust gasket leak. Air sucked back into the combustion chamber may cause a lean condition at ignition and thus cause your engine to backfire

...carburettor or bad timing settings. Check this link for backfire issues: . What would cause Ford 390 to backfire through carb Yahoo Answers Setting Curb Idle Speed of Carburetor Video Holley Carb ...

...Carburetor adjustment set too lean Muffler construction can induce backfire Higher than normal engine temperatures Some carburetors can induce backfire due to the sensitivity of internal transitional ...

there, Have you check the valves and the valve gaps?? Sometimes but not always having the wrong valve gaps can cause backfires. Have you also tried tweaking the carburetor to try and improve the idle?