Mechanics

ENGINE IS SMOOTH ON CNG WHILE KNOCKS ON PETROL. SPARK PLUGS CHANGED, TAPPET ADJUSTED, THROTTLE SERVICED NEED UR SUGGESTION.

2007 Toyota Corolla • 4 cylinder 2WD Manual • 68,000 miles

Hi carpros y it is so that car is smooth on CNG but rough on petrol?
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Fahdaslam
June 30, 2012.



Have you run a scan for a knock sensor fault as yet?

Mhpautos
Jul 1, 2012.