2008 Arctic Cat 650 H1 running issue - ArcticChat.com - Arctic Cat Forum

Utility ATV repair and maintenance & Troubleshooting Place your Utility ATV Repair and Maintenance questions/thoughts here... *not performance*

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post #1 of 6 Old 02-12-2012, 04:48 AM Thread Starter
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ATV: 2008 Arctic Cat 650 H1
2009 Mileage: 600 km
2008 Mileage: 400 km
2008 Arctic Cat 650 H1 running issue

We were out yesterday and 10km into the run the bike starts to miss and backfires and quits on the trail,after checking the plug and letting it sit for 20 minutes it finally starts but have to work the throttle because it still wants to quit..........running rough so i start making my way back and around 1/2 way the bike starts working like it should be so i continue on back to where we started put some fuel conditioner in the tank and let her run for 20 minutes still working fine so i start to head back and she does the same thing again running rough sputters and this time wont start,any ideas what this might be.

Some ideas

1 - bad fuel
2 - coil

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post #2 of 6 Old 02-12-2012, 06:51 AM
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I'd say you have something in the fuel. Do you have a fuel filter on it? If not I would install one, and then clean out the carb, and while your at it, double check your clamps on the boot from carb to motor and airbox to carb. My buddy had issues on his bigbear similar to yours, and his carb was loose in the boots letting crap in when it got bumpy.
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post #3 of 6 Old 03-17-2012, 08:56 AM
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not sure but mines doing the same but only in 4x4,some said the carb,others said to leave the engine covers off running to hot
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post #4 of 6 Old 03-17-2012, 10:56 AM
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I'd drain the float bowl into a cup and see how things are looking. I'll bet it's not pretty.

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post #5 of 6 Old 03-18-2012, 11:53 AM
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ATV: 2007 artic act 650 h1
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my cat left me and my son in the bush with the same symtons.I replaced the coil but still wouldnt fire.So i striped the plastic and for two days followed wires,finally i found one near the carb that was half broken,just connected by a couple straglers,spliced it and turned the key and off it went.A very happy moment.
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post #6 of 6 Old 03-30-2012, 03:55 PM
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Dies after 20 Minutes

I would changed the spark plug, had that problem a lot when I ran NGK spark plugs, they would fire when not under compression making you think they were ok.
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