What do I need to bench test my ignition coil?
To begin, you’ll need the resistance specifications for your specific coil in order to perform this test. You should be able to find this information in your service and/or repair manual. You should also don a pair of safety glasses and old clothing that doesn’t have any loose ends. If you have long hair, tie it back.
What is the purpose of a 30 kV ignition coil test?
The purpose of this test is to evaluate the peak firing voltage of the ignition coil via a 30 kV test adapter under engine run conditions. Uninsulated HT pickups are designed to clip around double-insulated HT leads only – they are not designed for direct connection to a hazardous live voltage.
Where do you test the secondary winding on an ignition coil?
To test the coil’s secondary winding, attach the test probes to the outer 12-volt pole on the coil and the center pole (where the main wire goes to the distributor). The 12-volt pole is the spot where the power comes into your coil. It will be marked with a + sign, or it might only be indicated by a number.
What is the resistance of the ignition coil?
The primary winding of your ignition coil is the first to receive voltage from the battery, so we’ll follow its lead and test the primary first. Find the resistance specifications for your car’s primary coil winding in your repair manual.
How do you test a 12 volt ignition coil?
Turn on the multimeter and set it to the “ohms” function. Insert one of the multimeter’s probes into the center opening of the coil, contacting the metal terminal inside the coil. Touch the second probe of the meter to the ignition coil’s grounding terminal. The meter should read 6,000 to 15,000 ohms.
Where does the voltage go in an ignition coil?
Depending on the type of coil you have, this voltage either travels from the single ignition coil into a distributor, from the coil itself into a spark plug wire, or in the case of Coil-On-Plug (COP) systems, the coil sits directly on top of the spark plug.
How many ohms does an ignition coil need?
Touch the second probe of the meter to the ignition coil’s grounding terminal. The meter should read 6,000 to 15,000 ohms. If it does not, the coil’s secondary winding is faulty.
What should the meter read on a ignition coil?
The meter should read between approximately 0.4 and 2 ohms. If it does not, the coil’s primary winding is faulty. If the coil checks out test the main coil wire, that was removed from the distributor, for shorts.