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Home >> Chevrolet >> 1989 >> Forward Control 7.4 W, Standard >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> CCC Tests W/O Codes >> Backfire >> Symptom Definition
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Symptom Definition

Fuel ignites in intake manifold, or exhaust manifold, making a loud popping noise.