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It could be a number of things, in addition to those already mentioned. In regard to the carburator, it would more likely be the power valve in lieu of the accelerator pump. It could be a burned valve. (do a compression test, and a leak-down test on each cylinder to determine the condition of the valve train) It could be a collapsed lifter, or a broken valve spring as well. Also, depending on the care of the engine as well as the milage, it could also be a flat cam lobe. Is it back firing through the carburator, or through the exhaust?
make sure the ignition timing it correct, the accelerator pump in the carburetor could be bad
possibly a loose connection to a sparkplug that is causing misfiring
What else can I help you with?
What could cause a Corvette to backfire when the air is on?
Before I can answer your question I need to know if the engine backfires during any other operations, such as putting the car in drive?
Will a bad timing chain make the engine backfire?
Incorrect Timing Can Cause Backfire.
What size engine does the 2013 Chevrolet Corvette have?
The 2013 Chevrolet Corvette has a V8 engine.
How do i reset the Service engine soon light on a 1994 corvette?
Have vehicle scanned to determine the problem and have codes cleared
What is the problem with an 1990 corvette the engine will not turn over or start when ignition turned on?
check the battery and connections/cables
What size engine does the 2005 Chevrolet Corvette have?
The 2005 Chevrolet Corvette has a V8 engine.
What size engine does the 2008 Chevrolet Corvette have?
The 2008 Chevrolet Corvette has a V8 engine.
What size engine does the 2010 Chevrolet Corvette have?
The 2010 Chevrolet Corvette has a V8 engine.
What size engine does the 2007 Chevrolet Corvette have?
The 2007 Chevrolet Corvette has a V8 engine.
What size engine does the 2012 Chevrolet Corvette have?
The 2012 Chevrolet Corvette has a V8 engine.
What size engine does the 2002 Chevrolet Corvette have?
The 2002 Chevrolet Corvette has a V8 engine.
What size engine does the 2003 Chevrolet Corvette have?
The 2003 Chevrolet Corvette has a V8 engine.
