2007 Toyota Corolla Repair Question

Topics covered: Knock sensor, Sensor.
Mileage: 68,000 miles.

Asked on June 30, 2012

Engine is smooth on CNG while knocks on Petrol. spark plugs changed, tappet adjusted, throttle serviced need ur suggestion.

Hi carpros y it is so that car is smooth on CNG but rough on petrol?

Asked by fahdaslam

Replied on July 1, 2012

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

Answered by mhpautos (expert)
26,898 answers provided