How to Check the Spark on an Ignition Coil?

Answer A car's ignition coil transforms the 12-volt current from the battery into a much higher voltage to spark the spark plugs and start the engine. Modern cars have more than one coil and these are oft... Read More »

Top Q&A For: How to Check the Spark on an Ignition Coil

How to Check to See If You Have a Spark Coming Out of the Ignition Coil Wire?

If your vehicle isn't starting when the engine is turning over, you may not be getting spark to the spark plugs through the ignition coil. You can check this by performing a simple test. This task ... Read More »

How to Check an Ignition Coil With a Spare Spark Plug?

Before solid state ignition systems and computerized engine management systems, checking ignition coil output was simply a matter holding the coil wire near the engine block while you cranked the e... Read More »

Problems With Getting No Spark From the Ignition Coil & Ignition Issues?

Certain requirements must be met for an ignition coil to produce the high-voltage spark that fires an engine. Problems associated with meeting these requirements can be as simple as a corroded wire... Read More »

How to Check a Coil for Spark?

If you're having trouble starting the engine of your vehicle but you hear it turning over, you can perform a quick test on the ignition system at home to help you diagnose the problem. Sometimes th... Read More »