Opel Corsa - Poor engine starting | HELLA
Opel
Opel Corsa-B: Model years 1998 to 2000
Opel Corsa-C: Model year 2001
Poor engine starting,
Poor cold start performance,
Misfire.
If there are complaints for these vehicles that the engine will not start and/or misfires, a possible root cause may be the spark plugs. They should be checked and replaced if necessary. The vehicle manufacturer recommends the spark plug type:
- Spark plug type: FGR 8 KQE0
- Tightening torque 25 Nm
- Electrode gap 1.35 mm
A frequent cause of failure is short-range operation or frequent cold starts.
Fault patterns and possible causes (tightening torque too low):
- Thermal overload of the centre and/or earth electrode and/or the insulator base.
- A broken insulator base.
- A damaged thread.
· Thermal overload can be caused by not properly tightened spark plugs. Consequential damages, such as defects in the centre and/or earth electrode and/or the insulator base by loosening or vibration of the spark plugs.
Fault patterns and possible causes (tightening torque too high):
- The spark plug housing/insulator bond has loosened or been damaged. This caused the spark plug to become "leaky".
- Vibration has destroyed the spark plug completely.
- Excessive torque may cause violent rupture of the thread. (Heavy traces of the spark plug wrench may be visible on the hexagon.)
Note:
Consequential damages such as on the engine or cylinder head will not be accepted by the vehicle manufacturers due to various spark damages.