Q: Engine revving, backfiring, cannot accelerate past 40 mph - 1990 Chevrolet G30
Whenever I rev the engine, I notice backfiring. I think it's coming from the carburetor area. It makes a popping noise. I'm unable to accelerate past 40 mph. The engine never stops revving and cannot idle down. I had the fuel filter replaced. The carburetor hose to the distributor cap is good. What might be the problem?
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