How to Test a 12V Ignition Coil!

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2 жыл бұрын

How to Test a 12V Automotive Ignition Coil. The Coil in the video was used for easy demonstration purposes but this method is also effective for HEI and Coil On Plug systems. Post any questions you might have. Thanks!

Пікірлер: 31

@fastjeffy Жыл бұрын

Thanks for the straight forward video. I don’t want to hear someone’s life story when I watch a video like this

@aankivbay6668 4 ай бұрын

I absolutely agree with Fast Jeffy

@aankivbay6668 4 ай бұрын

I absolutely agree with Fast Jeffy

@chrishayes8197 4 ай бұрын

but how will I ever know what kind of cookies Grandma used to make?

@Australia-ky7kx 10 ай бұрын

Thanks for posting a simple straight forward video.

@kathypollari7122 Жыл бұрын

thanks for your simplicity.

@josephdelgreco8074 Ай бұрын

Great video thanks

@matthewtrudeau1197 Жыл бұрын

Great video! Exactly why I love KZfaq. Thanks.

@markallison8820 Жыл бұрын

Thank You !! 🙂

@snaponmark Жыл бұрын

Absolutely!

@fredbloggs2780 6 ай бұрын

Hi. Thanks for posting this. I followed your instructions and tested my coil. I got a steady 2.6/2.7 for primary but only 5.5 for the secondary. Would this low number be enought to prevent the car starting. It started fine yesterday after a months lay up but today just won't spark up. Thanks

@jasedavids1795 Ай бұрын

So i got a mercruiser and when motor is hot i think thats when it fails cause boat runs awful and stalls out then when i let it fool it starts and runs fine again until its warm how do i test it?

@bjnopoli Жыл бұрын

Gor some reason I get 0 ohms on my coils on primary side. But they work. I wonder if its my meter or is it really 0 when it should be about 3. If it is really 0, why would that be?

@Mstom178 Жыл бұрын

is higher better than lower? my old one says 5 the new one says 6

@markferrier6403 Жыл бұрын

Thank you. So for testing voltage to the coil, is it as simple as using the multimeter between the positive post and a ground? I have a car, 1977 MGB, it's supposed to have wire resistance to run at 9 volts, but I have 13.5 volts (looks like the wiring has been altered). I installed an external resistor and I am not getting a voltage drop. The coil and distributor are original specs. Thanks

@martinp8427 Жыл бұрын

I am not an expert on ballast resistor coils, but the resistor should be connected to the positive side of the coil. Usually they are 1.0-1.5 kilo Ohms. If connected and working properly you should see a voltage drop either with ignition on or when cranking the engine. Hope that helps!

@jaysmith3259 Жыл бұрын

Why are you testing for a voltage drop, is the car not starting?

@martinp8427 Жыл бұрын

@@jaysmith3259 Voltage drop on the ignition coil is designed for older systems in order to prevent wear on the points of the ignition. That's why those older systems use a ballast resistor on the coil.

@jaysmith3259 Жыл бұрын

@@martinp8427 That makes sense, I forgot about the old points distributors.

@ericbunksvintagesportsman6311 Жыл бұрын

Mine read 4.2 is that a good coil? thx!! I was confused by the .2 As compared to my reading thx!

@snaponmark Жыл бұрын

Were you able to Google the proper specs for your particular vehicle?

@ericbunksvintagesportsman6311 Жыл бұрын

@@snaponmark Its a farm tractor with an external coil added to a magneto that has been disconnected not really sure what the coil is

@Shalom587 2 ай бұрын

The first test on 200 at 1:05 shows 0.20. This looks out of range to me on my car coil

@billpayne3983 2 ай бұрын

Yet another video about ohms and resistance!! Why oh why is there no KZfaq video on how to check the VOLTAGE of a coil??

@heyinway 2 ай бұрын

About 35,000 volts output. At minimum it will make your arm go numb for a few days or outright kill you

@giannitriv1888 4 ай бұрын

Hi, how do you test to see if it is getting 12 volts with an analog meter?

@snaponmark 4 ай бұрын

Hold the black to ground and the red on the + on the coil. Set the meter to the 20V DC then turn the key to the run position without starting it. Analog and Digital are the same just different style readout like watches.