I HAVE A 1986 Z28 CAMARO TUNED PORT FUEL INJECTION AND WE JUST REBUILT A MOTOR AND STUCK IN IT NOW IT IS HESITATING, BACK FIRING, BLACK SMOKING AND IT IS IN PERFECT TIME. WHAT COULD BE THE PROBLEM?
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1986 Chevrolet CAMARO 305 TUNE PORT
Already Tried:
EVERYTHING THAT I KNOW