Engine Mechanical problem
2002 Nissan Almera Two Wheel Drive Manual 45661 miles
A malfunction light stays on. Garage diagnosis engin misfire, but they do not know why and say they have to drive the car to see when it happens. I said the car shudders slightly before the malfunction light came on
Engine running rough or misfiring can be cause by the following: Defective spark plug.
Inadequate spark/coil, defective spark plug wire.
Lack of compression
False air leakage.
Faulty fuel injectors.
Insufficient fuel pressure.
EGR valve that is leaking.
Throttle Position sensor
Idle air control valve