Question about Atom ATDDLX 25cc 4-Stroke Honda Gas-Powered Shaft-Driven Lawn Edger, Colors may vary

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Test ignition coil honda gx25

I have tested coil with a multimeter and tested also my honda whippersnipper which has the same engine and both coils tested the same but i have no spark on my edger, the spark plug gave me spark when placed into the other engine but neither plug will show any spark in the edger.

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Okay. You have eliminated the plug. Now disconnect the coil kill wire and try for spark again. Also check grounding between the coil laminates and the cylinder with you ohm meter should read zero.

If grounding okay and with the kill wire disconnected you still get no sparks then replace the coil pack as it probably a failed internal trigger which can not tested for.

Posted on Dec 31, 2014

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Improve the FixYa experience for everyone by voting. I want you to let me know if the solution(s) suggested were of any value. Constructive criticism is welcomed.

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I'm Ben and -- hopefully -- I can provide some meaningful assistance.

I recommend a diagnostic scan to confirm my diagnosis of a malfunctioning coil(s).

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Multimeter


Pick up a shop manual. It will tell you how and what to check for coils. I don't know the specs off hand for your coils (they are generally in ohms which measure resistance) or which wire to connect to the multimeter where. You need a shop manual to test coils to get the specs on how many ohms there should be. Make sure the battery is 100% charged and read the manual for your multimeter. You can pop the fuse if you use it wrong and or damage the meter. To test a solinoid you'll need a helper or you can do it yourself but it helps to have someone push the start button for you while you watch the meter. Put the multimeter in DC volts (I believe there is postition of 20v and under but dont use millivolts, I dont have mine handy to look at and my memory sucks anymore). Have the helper push the start button and put the + lead on one terminal (the one coming from the battery) and the - on the other (the heavy one leading to the starter) it should show a voltage (around 12 or more with a fully charged battery)when the button is pushed with the key on. To see if you are getting power tot he solenoid unhook the wire coming from the start button (again this is where a shop manual helps but it's usually a real thin wire) place the + lead on the wire and the - lead on a ground ( engine, frame, - battery term). have a helper push the start button with the key on. If you have voltage to that wire thats close to battery voltage then you are getting power to the solenoid most likely. You can also test that way with a test light. I know I'm forgetting stuff but you get the idea. Oh yeah, check all your fuses first to make sure none of them are blown.

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