|
If the spark plug wires and connectors are old, they can "leak" electricity to ground when they are damp or it is very humid. When the car is running poorly, particularly if it has just rained, open the engine lid with the engine running in a dark or dimly lit garage. If the wires are leaking it should be visible. Also, I would pull the wires and examine each one for cracks in the insulation and check the resistance on each wire, connector to connector. The correct resistance will vary based on what type of wire you are using, but you will immediately see if one is much different, i.e. infinite resistance or 100k ohms when all the rest are 5-10k.
|