1996 SkiDoo 670 MXZ Problems
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1996 SkiDoo 670 MXZ Problems

This is a discussion on 1996 SkiDoo 670 MXZ Problems within the General forums, part of the Snowmobiles category; Hey guys I just bought this sled off a guy that bought it for his wife new back in 97. You know how the story ...

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Thread: 1996 SkiDoo 670 MXZ Problems

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    1996 SkiDoo 670 MXZ Problems

    Hey guys I just bought this sled off a guy that bought it for his wife new back in 97. You know how the story goes, he bought it, she got scared and he parked it for 10+ years in a barn. Anyway, I cleaned the carbs twice, put new fuel, plugs, oil, fuel lines in it. I can get it to fire but for only for a few secs, 30 sec max. I have rebuilt older sleds in the past but this is a real head scratcher. Any ideas?



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    wildthangci's Avatar
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    Let's start with the fact that that is a 1999 670ho, not a 96.

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    Sorry. Yes, you are right.

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    wildthangci's Avatar
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    Just important to know. That HO motor is a whole different animal. Your problem definitely sounds fuel related. I'd go through the carbs again, making sure to blow air through all passages. A small wire (I use torch tip cleaners) helps make sure the pilot jets are clear.

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    Yes, that is what I thought. I will try cleaning again, maybe third time is a charm.

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    Also, make sure your primer is working correctly. They will dry up if they sit for awhile. Some mix oil or even WD-40 will sometimes get them working again.

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    greasemonkey's Avatar
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    I would also check the pick up line IN the tank and the screen in the tank.
    Have seen many times where the line cracks inside the tank.
    http://www.snowmobilefanatics.net/greasemonkey/2

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    Thanks guys, I went through everything you suggested. Got it running last night. Engine ran great, jumped on to do a test run, no go. Clutch was bad. After some struggle with the plastics got the clutch out. The clutch was shot but luckily I had a clutch from a 700 in the back. Popped it in and man what a sled. I have heard good things about the MXZ 670 HO, but I am impressed. I still have some small things I want to do, seat recover, wrap it, etc. but a great sled and now a fun project. Thanks for the help!

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    wildthangci's Avatar
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    They are quite the sled. Glad to hear you got it up and running.

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