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Old 12-29-2012, 04:30 PM   #1 (permalink)
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Snowmobile has no power

I went to take my 97 vmax 600 sled out today and it barley could move. I had it at full throttle and it was going very slow, really under powered. It starts and idles fun but just no power. I pulled both plugs out and one of the plugs...left hand side...had no oil and no carbon build up on it...like it was bran new...the other plug is fine don't know if I have engine problems or spark problems or if its something else. Please help.
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Old 12-29-2012, 04:42 PM   #2 (permalink)
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Check your compression, you might be onto something. Mine acted similar and it was a blown piston. Also check your clutches
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Old 12-29-2012, 05:42 PM   #3 (permalink)
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Was the one that looked brand new wet? May not be firing on that cylinder......
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Old 12-31-2012, 05:43 AM   #4 (permalink)
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Very little
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Old 12-31-2012, 10:33 AM   #5 (permalink)
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I would check for a no or weak spark condition on your left cylinder..... Since your plugs are out you might as well check compression to see where you're at too......... Then go from there....
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Old 12-31-2012, 01:26 PM   #6 (permalink)
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Sounds like you might need to rebuild the top end, sounds like a bad piston.


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Old 01-01-2013, 08:08 AM   #7 (permalink)
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first trip of the season? how many miles on the sled? after you confirm compression, clean the carbs.
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Old 01-18-2013, 07:52 AM   #8 (permalink)
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Re: Snowmobile has no power

I checked the center to center distance between my cluthes and it measures 10 1/2 inches between the two. I did notice though that my belt was pretty worn out on the side of it, the steel cables are starting to show and the belt sits below the top of the sheave on the secondary clutch. Whould this show a big difference on how my sled has been running. Another thing that I thought of is, maybe my carbs are out of sync?
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Old 01-18-2013, 09:07 AM   #9 (permalink)
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My belt is brand new and it sits just below the top of the sheave on the secondary. I don't believe this is your exact problem but if you have a bad belt replace it.

What was your compression? I know a lot of people like to think their compression is fine when it really isn't. A quick check will tell you if you need to rebuild top end or not. Rule this out.
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Old 01-18-2013, 12:09 PM   #10 (permalink)
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Re: Snowmobile has no power

I haven't tested my compression yet still looking if I can borrow a compression tester from somebody instead of buying one. I'm really hoping I didn't lose compression
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Old 01-19-2013, 05:18 AM   #11 (permalink)
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If you have an AutoZone nearby, you can rent one there.
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