Jaguar XJ6 Ignition Coil
Diagnosing Jaguar XJ6 Ignition Coil Faults
The ignition coil of your Jaguar XJ6 is the part that breathes, or rather, sparks life into your vehicle. At some point, problems do arise in the form of starting problems and fuel usage being too much. To prevent the worst from happening, here are a couple of troubleshooting tips to help you figure out what is wrong with your ignition coil before it is too late.
Problems regarding fuel economy
One of the first signs of ignition coil trouble actually comes from the gas tank. Notice if you have been using way too much gas than usual. If you do, then immediately check if your ignition coil is still working. If the heating and cooling process of your ignition coil is too rapid, what could happen is that the part would slowly warp itself into a different shape. This would then lead to internal damage, causing the whole thing to stop working. Another area to check is the spark plug. See if the gapping is still small. Excessive gaps from the spark plug would lead to a lot more energy and charge given to the ignition coil, wasting fuel. If not that, then the charge might not be enough to fully start the car and it will run weak.
Stalling or misfiring engine
Speaking of weak ignitions, another common sign of an ignition coil going bad is when your vehicle is either struggling just to sputter into life, or when it doesn't even want to work at all. If you know that the engine is working fine, then it is very likely the ignition coil to blame. If you want to be certain, the first thing you got to do is check whether the ignition coils are held correctly or not. Sometimes, starting problems come from the part being loosely installed, thus potentially arcing over itself, which could result in damage. If you see this, then just a simple readjustment should do the trick. An additional way to be really sure is by using a voltometer to measure the resistance being made. It should read around .70 to 1.7 ohms. Anything higher or lower than that translates to a faulty ignition coil, and it must be replaced.