Checking Misfiring

Checking Misfiring





- Take a current reading with the diagnostic tool.

Misfire Cyl 1
Misfire Cyl 2
Misfire Cyl 3
Misfire Cyl 4





- Drive the car with the same engine speed, air mass/combustion and coolant temperature as shown by Freeze Frame.





A few misfires in this load and engine speed range can be accepted.

Is any of the counters incrementing continuously?

NO - Remedial Action OK

YES - Fault Not Rectified