Electricity always takes the shortcut. Under normal conditions, high voltage electricity passing through the spark plug wires reaches the spark plugs and ignites the ready air and fuel mixture.
If during this journey it finds a way to create a shorter arc, it escapes from there and creates an arc via the shortest path. That's why jumping happens.
If our spark plug cable and the hoods at its ends are damaged or torn, or if an incorrect assembly has been made, our cable will ignite from here to the first place it finds before reaching the spark plugs.
This tear may not always be visible. Even seemingly solid cables and accessories may skip from time to time. The reason for this is damage that is not visible at the micron level.
Below is the incorrectly installed spark plug cable.
How to Understand?
Shaking occurs in a jumping vehicle while it is idling. In addition, decreased traction and excessive fuel consumption are also among the symptoms.
Sometimes, when the jumping area is visible, the spark can be seen with the eye. But this does not mean that it will always be visible and the spark will be seen.
Is it harmful?
Spark plug wire bypass is not always harmful, but there are cases where it is harmful. If the high voltage spark comes across the iron parts and bolts in the engine, there will be no damage caused by the spark.
If the jump occurs over an electronic region, the high voltage will disrupt the electronic circuits.
Although it is a very rare situation, if your vehicle has a fuel leak, it can cause a fire.
