96 ZR 440 smoking - Snowmobile Forum: Your #1 Snowmobile Forum
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post #1 of 4 (permalink) Old 12-23-2012, 04:05 PM Thread Starter
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96 ZR 440 smoking

I cleaned the carbs and had the sled out yesterday it ran great. When I went to ride it today it was smoking and back firing. It would bog down with any throttle. It sat for about 5 hrs and I started it back up it ran a little better only popping a little but I can give it throttle now but it smokes more and will idle for about 2 mins before it dies. Any help?

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post #2 of 4 (permalink) Old 12-23-2012, 04:39 PM
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How do the plugs look?
Have you tried new plugs?

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post #3 of 4 (permalink) Old 12-23-2012, 07:18 PM
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How fresh is the gas?

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post #4 of 4 (permalink) Old 12-23-2012, 08:37 PM
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Whats the compression?
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