Where are the spark plug ignition coils located?
Depending on the design of the manufacturer, some vehicles will use one or two ignition coil responsible for the firing of multiple spark plugs, sometimes through low resistance ignition cables. Other designs will use one ignition coil for each individual spark plug, which is bolted right over the spark plugs.
How can I test the spark at the coil?
Using an Adjustable Ignition Spark Tester Test the ignition coil positive and negative side. Check for voltage output at the ignition coil. Disconnect the ignition coil wire from the distributor and install the spark tester to the wire and ground the tester to the engine. Crank the engine for a few seconds.
What should I put on my ignition coil?
To solve this problem, some ignition coil manufacturers pre-apply or include a marine-grade di-electric grease with their product. This gives a better seal between the coil-on-plug boot and the spark plug terminal nut, preventing moisture from interfering with voltage transfer and spark generation.
What happens if there is no spark in the ignition coil?
Hence, without this high voltage, there is no spark and, consequently, internal combustion cannot take place within the engine. Simply put, the bottom line is without spark the engine doesn’t run.
Using an Adjustable Ignition Spark Tester Test the ignition coil positive and negative side. Check for voltage output at the ignition coil. Disconnect the ignition coil wire from the distributor and install the spark tester to the wire and ground the tester to the engine. Crank the engine for a few seconds.
To solve this problem, some ignition coil manufacturers pre-apply or include a marine-grade di-electric grease with their product. This gives a better seal between the coil-on-plug boot and the spark plug terminal nut, preventing moisture from interfering with voltage transfer and spark generation.
What causes a spark plug and ignition coil to fail?
Overtime the seal between the valve cover and that spark plug tube can fail, causing oil to leak in and fill up around the spark plug and ignition coil. This in turn can lead to spark plug and ignition coil failure. Be sure to fix the root cause of the oil leak, so this problem does not reoccur with the new ignition parts installed.
What should I do if my ignition coil is misfiring?
You should replace all 4 coils as a set with new plug wire boots and plugs. Be sure to do all of this after the valve cover gasket and spark plug hole seals are replaced. The statements expressed above are only for informational purposes and should be independently verified.