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Does anyone have a simple test procedure to test the ignition coil from a weed eater or gas blower 2 cycle engine? Answered


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DGW
DGW

11 months ago

OMG, the guy is asking for some Ohmmeter readings of the coil. He knows how to test for spark. Here is what I see on my Homelite 26cc weed wacker which is about 12 years old. From the spark plug high voltage wire (high side of the secondary winding) to ground (engine block) I get 3.84K Ohms. From the kill switch high side wire (which I am guessing is the high side of the primary coil winding) to ground is 348 Ohms. I do have a blue-white spark that I could not see in sunlight but taking it indoors made it visible. Any Ohm readings similar to these should be fine.

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MarcA94
MarcA94

1 year ago

to test with an ohmeter pos lead on spade terminal neg to ground wire if the ground is part of of horse sho ground there you should have continuaty now pos from spade terminal to
spark wire tip with neg wire you will have continuaty if you dont get this you have bad coil set youre ohm meter to 20 000 ohms to test not an accurate reading but will show continuaty

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jclemmojoe
jclemmojoe

11 years ago

I was thinking more in the line of resistance readings. I know how to check for spark. Thanks for your input!

Joe

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tazmaniac_37752
tazmaniac_37752

Answer 11 years ago

Most of your OHM meters have a resistance setting on them I have one from sears that has it!

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tazmaniac_37752
tazmaniac_37752

11 years ago

The best and least painful way to test only the coil is to go to your local automotive supply store and for 2 maybe 3 dollars buy your self an ignition tester which is a small mostly plastic device that has an alligator clip on one end that you clip onto you engine and then you attach your coil wire to the other end and crank your engine and watch for the spark in the middle. The ignition tester comes with instructions, You can also make one of these with a ink pen tube and a couple of short bolts as soon as i get my camera repaired i will up load it as an instructable!

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lemonie
lemonie

11 years ago

The usual way is to take the plug out, wedge it on the engine block (preferably not with your hand) and turn the engine over looking for a nice spark. However, I know other people who will hold the plug in their hand and gauge the electric-shock strength as they turn it over.
Looking at your plug is a good idea if you've got ignition problems.

L