X540 Owner In Michigan, won’t run.
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Thread: X540 Owner In Michigan, won’t run.

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    X540 Owner In Michigan, won’t run.

    I have a 2012 X540 with 169 hrs on it . A month ago I mowed then washed exterior and blew off and towel dried as usual. Since then I have no spark it did run after the cleaning with no problem. I have fuel, compression 115lbs per. No spark so I replace the spark control module under dash still no spark . I pulled the black wire (kill wire)of coils still no spark? I have replaced plugs filters ect. I also pulled the coils and remove slight rust on them and re-gapped at .010 , magnet is strong. There are no jumpers in place also. Please is there something I have missed? I thought that if the kill wire was pulled it would be simply mechanical spark? Any ideas would be greatly appreciated

    Thank You

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    SulleyBear's Avatar
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    Quote Originally Posted by Luckyboy1! View Post
    I have a 2012 X540 with 169 hrs on it . A month ago I mowed then washed exterior and blew off and towel dried as usual. Since then I have no spark it did run after the cleaning with no problem. I have fuel, compression 115lbs per. No spark so I replace the spark control module under dash still no spark . I pulled the black wire (kill wire)of coils still no spark? I have replaced plugs filters ect. I also pulled the coils and remove slight rust on them and re-gapped at .010 , magnet is strong. There are no jumpers in place also. Please is there something I have missed? I thought that if the kill wire was pulled it would be simply mechanical spark? Any ideas would be greatly appreciated

    Thank You
    Just so we are clear in the sequence of events, roughly a month ago you washed and dried it and it ran after that without any problem. After some time passed following the wash, now it has no spark. Is that accurate?

    How much time elapsed after the last time it ran and operated as it should and when it lost spark? Did anything else happen?

    How are you confirming it has no spark?

    Do you have a technical service manual for your tractor model? HIGHLY suggest you get a Deere Technical Service Manual as it walks through the proper diagnosis sequence and check list. You can get them in CD form or in bound book form. Some are even sold on Ebay and other online sources, just make sure the manual you purchase is the Official John Deere technical service manual for your model, as there are many generic versions that are junk in comparison.
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    Quote Originally Posted by SulleyBear View Post
    Just so we are clear in the sequence of events, roughly a month ago you washed and dried it and it ran after that without any problem. After some time passed following the wash, now it has no spark. Is that accurate?

    How much time elapsed after the last time it ran and operated as it should and when it lost spark? Did anything else happen?

    How are you confirming it has no spark?

    Do you have a technical service manual for your tractor model? HIGHLY suggest you get a Deere Technical Service Manual as it walks through the proper diagnosis sequence and check list. You can get them in CD form or in bound book form. Some are even sold on Ebay and other online sources, just make sure the manual you purchase is the Official John Deere technical service manual for your model, as there are many generic versions that are junk in comparison.
    About a week after I put it away it was time to mow again and no-start, I have a plug(glass spark checker) in that goes between the plug and wire very faint light up not enough to cross plug arc . Being that the kill wire (black) wires pulled shouldn't it spark as the flywheel turns(cranks)? I can't believe both coils could go at 1 time?. Thanks
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    Quote Originally Posted by Luckyboy1! View Post
    About a week after I put it away it was time to mow again and no-start, I have a plug(glass spark checker) in that goes between the plug and wire very faint light up not enough to cross plug arc . Being that the kill wire (black) wires pulled shouldn't it spark as the flywheel turns(cranks)? I can't believe both coils could go at 1 time?. Thanks
    That is my understanding too. I thought the ignition coils were only inhibited by the kill wire and without it a spark would get generated anytime the magnet on the flywheel passed by. I know a lot of modern tractors have fancy computer interlock modules but again, I thought those mostly worked in conjunction with the kill wire.

    If my understanding is flawed someone please enlighten me. :-)

    I have a tester similar to what you describe. Do both ignition coils generate the same faint light on your tester? Did you verify your tester is working by hooking it to another engine that is working properly?
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    Quote Originally Posted by jgayman View Post
    That is my understanding too. I thought the ignition coils were only inhibited by the kill wire and without it a spark would get generated anytime the magnet on the flywheel passed by. I know a lot of modern tractors have fancy computer interlock modules but again, I thought those mostly worked in conjunction with the kill wire.

    If my understanding is flawed someone please enlighten me. :-)

    I have a tester similar to what you describe. Do both ignition coils generate the same faint light on your tester? Did you verify your tester is working by hooking it to another engine that is working properly?
    Thanks for your input. I did both sides and the same very faint glow on tester. I just don't see how both could go suddenly. Coils are $63.00 each . Really appreciate your help. Am I missing something?
    Last edited by Luckyboy1!; 08-05-2019 at 09:47 AM. Reason: Miss speel

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    My X360 has a Kawasaki engine and from what I read it's not uncommon for the coils to go bad, even nearly at the same time. I thought it odd too. I did some research and found I could usually get the coils cheaper on Amazon, EBay, etc. by getting the Kawasaki number versus the JD number. Just FYI.
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    Thank You will try searching the Kaw#
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