Saturday, September 7, 2013
How to Check Primary Secondary Cycle Ignition Coil
On the inside of every ignition coil are two groups of windings which wrap around an iron core. The primary windings have a couple hundred turns around the core, while the secondary windings have turns numbering in the thousands. When problems within an ignition coil are suspected, having information on how to check these windings can be beneficial.
Check Primary
To check the primary windings of an ignition coil, a digital ohmmeter will be needed. The ohmmeters positive and negative test leads will have to be connected to the coils positive and negative terminals. A reading of 0.4 to 2 ohms is normal while a zero reading means the coil has a short in it.
Check Secondary
To check the secondary windings, you will also need a digital ohmmeter. The ohmmeters positive test lead will need to be attached to the coils positive terminal. The ohmmeters other test lead will have to be connected to the coils high voltage output terminal. Normal readings for newer coils is around 6,000 ohms while older ones can have much higher readings.
Warning
When checking for a spark, never take off the coils high voltage wire. Not only can it harm the coil but it can give you a serious electric shock as well.
No comments:
Post a Comment