General ATV Discussion Discussion Forum for Arctic Cat ATVs

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Old 05-26-2010, 09:58 AM   #1
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ATV: Artic Cat 400 4x4
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O.k. guys, we are having heck trying to figure out why not spark to 2003 400 4 x 4. Our local artic cat dealer and service tech told us that very very unlikely for ign coil to go out. They don't even keep them in stock and he has only had to replace one that he remembers. How true is this?

Machine will turn over, lights and all work, but no spark. CDI is sending spark to coil, but not sure if coil is working or not. Any ideas? Maybe stator? We have changed the voltage regulator, but that wasn't the problem.
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Old 05-26-2010, 10:36 AM   #2
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Check to see if the coil wire hasn't corroded OFF/THRU under the rubber boot at the coil itself. And YES........coils got bad. If the CDI is sending spark too the coil........but not from the coil to the spark plug..........BAD COIL or BAD WIRE......or BAD PLUG?

The stator is basic basically the "alternator" for the machine. It's to charge the battery when running.

Hope this helps.
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Old 05-26-2010, 10:39 AM   #3
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The 400's have a known issue of magnets falling off the magneto. Not every 400 will do it, but it's enough of an issue where many folks know about it. But if you are getting a voltage pulse to the coil, then you should be fine there.

I'd check the plug itself. A plug can be bad and spark when not under compression, but not spark if under compression. Worth replacing with a good (NGK) plug.
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Old 05-26-2010, 10:41 AM   #4
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So it would not be the stator at all. Has nothing to do with machine getting no spark? When the problem started, the machine would run, but would die after a while of running. After letting it sit for a while it would crank up and run againl Now it won't even start. Coil looks burned or melted on one end too. Another reason why I think it is the coil.
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Old 05-26-2010, 11:04 AM   #5
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<div class='quotetop'>QUOTE (ArticCatChick @ May 26 2010, 10:41 AM) <{POST_SNAPBACK}></div>
 Quote:
So it would not be the stator at all. Has nothing to do with machine getting no spark? When the problem started, the machine would run, but would die after a while of running. After letting it sit for a while it would crank up and run againl Now it won't even start. Coil looks burned or melted on one end too. Another reason why I think it is the coil.[/b]
YEP. Stator/magneto combo will simply charge the battery.......but the engine must be running to do it. If the coil is "burned/melted".....it's most likely has a short or is fused itself internally. The burn is from the heat generated from the short.

I'd replace your coil - coil wire - spark plug (I agree w/sanny - with a good NGK) and go from there.


good luck
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Just so we're clear.......I DO NOT have an Arctic Cat ATV Addiction..........wellll...YES...yes I do.....

2013 700H1 TRV XT (Mine!!) - 265mls
2009 550H1 EFI (Wifey's) - 990mls
2008 650H1 TRV (gone...but not forgotten) - 2250mls
2009 250Utility 4x2 (was great!! till "The Boy" outgrew it) - 480mls
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Old 05-26-2010, 12:05 PM   #6
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I have been fighting a miss and horrible performance for a long time on my Thundercat
I finally determined that the end cap on the sparkplug wire where it goes on to the
spark plug was not working properly and causing the miss. I cut it apart and could
find nothing wrong with it, but when I put a Continuity meter on it it would not show
any current going through, So it was like an open circuit. Conversely the other plug
end would show a small resistance on the meter so it was allowing voltage to get through.

Don't know if your plug wire end is like mine and has the resistance type plug end, but
it is worth checking.

A new $20.00 plug wire end solved my problem.

JERRY
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Old 05-26-2010, 12:55 PM   #7
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Your dealer is a moron. Do a search on here there last summer it was every day it seemed like people were having coil problems.
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Old 05-26-2010, 01:06 PM   #8
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Well that is what I thought, just from reading this forum the past couple of days. I felt kind of stupid asking that question.
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Old 05-26-2010, 01:56 PM   #9
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<div class='quotetop'>QUOTE (ArticCatChick @ May 26 2010, 01:06 PM) <{POST_SNAPBACK}></div>
 Quote:
Well that is what I thought, just from reading this forum the past couple of days. I felt kind of stupid asking that question.[/b]

NP! - there ARE no supid questions....that's how we all learn to figure things out.
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Just so we're clear.......I DO NOT have an Arctic Cat ATV Addiction..........wellll...YES...yes I do.....

2013 700H1 TRV XT (Mine!!) - 265mls
2009 550H1 EFI (Wifey's) - 990mls
2008 650H1 TRV (gone...but not forgotten) - 2250mls
2009 250Utility 4x2 (was great!! till "The Boy" outgrew it) - 480mls
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