1987 lt250 4wd spark issue - Suzuki ATV Forum
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post #1 of 8 Old 05-06-2012, 08:27 AM Thread Starter
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1987 lt250 4wd spark issue

This is hard to figure out. It ran for a while then died. Next day runs for a while then dies. Both times no spark. I put it in the shop put my spark tester on it again sparks about 5 times and quits sparking. I assumed coil heating up so I changed it out. Still get spark for about 5 times and then no spark. Let sit for 20 min. and it sparks for about 5 times and quits. I'm thinking CDI but don't want to chance a $300. quess. Anyone have something similiar?
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post #2 of 8 Old 05-06-2012, 08:37 AM
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I was thinking CDI as well. Besides that I'm not sure what else it could be. Hopefully somebody else on the forum can chime in and confirm this.

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post #3 of 8 Old 05-06-2012, 04:54 PM Thread Starter
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Re: update

Now it fires once every time I try it but only once. This is going to drive me crazy. I have order the manual and hopefully it will spell some stuff out but was wondering now why only one fire and then nothing....

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post #4 of 8 Old 05-06-2012, 05:11 PM
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This is a long shot but have you checked the fuses to make sure they weren't corroded and they are making a good connection?



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post #5 of 8 Old 05-06-2012, 08:26 PM Thread Starter
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spark issue

I have taken ever fuse out and every connection I can find and cleaned them all...
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post #6 of 8 Old 05-06-2012, 11:59 PM
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OK did it help the problem?




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post #7 of 8 Old 05-07-2012, 06:03 AM Thread Starter
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Still no change.
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post #8 of 8 Old 05-07-2012, 08:26 AM Thread Starter
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Was just reading the post on the 89 quadrunner spark issue and tried the heat gun on my cdi box and low and behold it has spark once its warmed up and quits when it cools down. I think I have found the problem. Will order a new cdi and see what happens. Will let you know.
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