Visual inspection of ignition coils

The visual inspection of the ignition system sheds light on potential causes of ignition problems

A visual inspection is always recommended before subjecting ignition coils to a precise functional test. The reason: An entry in the error buffer which indicates an error in the ignition system can also be caused by other parts than the ignition coil. System-wide problems may also be present.

Therefore, you should first check:

  • Whether mechanical damage or hairline cracks are present.
  • Whether the electrical wiring and the plug are intact, free of corrosion and kinks.
  • Whether sufficient supply voltage is provided by the battery.
  • Whether all valve seals are intact.

In this manner, you can eliminate other causes of damage if the ignition coil should undergo to a precise test.