1974 Pontiac Catalina Repair Question
Topics covered: Rocker arm, Popping, Camshaft.
Mileage: No information provided.
Mileage: No information provided.
Asked on July 8, 2009
1974 Pontiac Catalina Engine Noise
Engine Performance problem
1974 Pontiac Catalina V8 Two Wheel Drive Automatic
When my car is runnig at idle, I have a popping noise coming from my exhaust. It soulds like my car is back firing. I checked my valves and the seem good, my spark plug and wires are good. My rocker arms aren't too tight. What else should I check
1974 Pontiac Catalina V8 Two Wheel Drive Automatic
When my car is runnig at idle, I have a popping noise coming from my exhaust. It soulds like my car is back firing. I checked my valves and the seem good, my spark plug and wires are good. My rocker arms aren't too tight. What else should I check
Asked by kpg334Answer
Replied on November 1, 2009
check your rocker arms to see if they are all moving at the same rate while idling. You may have either a bent pushrod or a bad camshaft, causing the valve to not open giving you the popping sound. The pushrod also could have gone through the rocker arm.
