Out of hibernation 2010: tough starting Viper....


Good post...says it all!

valin said:
A good practice to get into when you are ready to fire up these snowmobiles after a summertime of sitting is this:

- Drain all of the old fuel out of the tank, and fill up with FRESH premium fuel. Put the old fuel in your truck.

- Pull off the carbs and clean them out thoroughly (mains, pilots, nozzles, and float bowls). You might as well inspect your reeds while you're that far for chipped or cracked pedals.....it's only 12 more bolts.

- Re-install, connect the fuel lines, coolant lines, and cables, but leave the airbox off.

- fill up a squirt bottle with mixed pump fuel - it doesn't have to be mixed fuel if this is not a new motor, but I always keep a mixed squirt bottle laying around at 40:1 to start the race sled and new motors, so I just use that.

- Hold your carb slides wide open, and squirt some fuel through each carburetor.

- Pull the chord. It will fire. It may not stay running because the fuel pump has not yet moved enough fuel to reach the float bowls in the lines.

- Repeat until the fuel reaches the bowls, and it stays running. You might have to do this a few times, but hey, you'll only pull it over a few times, instead of a hundred.

- Once it runs, shut it down, and throw the airbox back on.

- Enjoy.
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grapeape said:
Another way to get gas in the lines easier is to pull the plugs and pull it over with no compression,
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X2 - I played around last year addressing hard starts after storage (SSB did a bunch of fuel line/pump testing). Pulling the plugs (with the kill switch off) and tugging three times was enough to fill the bowls on my "01. The increased cranking speed with the plugs removed seemed to be the ticket.

I had previously added pre-mix down the plug holes and/or pressurized the tank with success but now I fill the tank, pull the plugs and pull three times, install the plugs and light 'er up.
 
I've always found less is more if its a hard start situation. Seems to me that pouring fuel into the cylinder would potentially "flood" and not resolve the issue. I also don't understand spraying starting fluid into the cylinder. I will admit that in the past I have used starting fluid but my procedure was to spray a split second burst into the airbox foam. It worked well and the amount I sprayed could not possibly be enough to wash down oiled surfaces...I'm talking split second.
 
I will add that I just pulled my machine out from the shed and one I got it to fire it would not run for shiiiittt on idle. I had to lean on the throttle and it just sounded like blahhhhhh with an ocassional backfire. after putting in new plugs i still had nothing. So what was the next thing that had to be done? Yup, you guessed it. pulled airbox, yanked carbs out flipped over and what did I find but all 3 pilots clogged solid.Used a piece of wire and compressed air and cleaned em all up. put it back together and it started up first pull and after hitting the choke real quick I could distinctively hear the sound of all three cylinders purring together. Moral of my story. When in dout, just clean those f-n carbs.
 
am i the only one that starts my sled up in the summer? i realize that not everyone stores their machine where they can easily start it, but i fire mine up all the time in the off season. the smell really takes me back to good times on the trail. plus i figure that regular operation is even better than fogging. i always take my carbs of preseason anyways but there is rarely any junk in them. anyone else do this?
 
BigTimeFarmer said:
am i the only one that starts my sled up in the summer? i realize that not everyone stores their machine where they can easily start it, but i fire mine up all the time in the off season. the smell really takes me back to good times on the trail. plus i figure that regular operation is even better than fogging. i always take my carbs of preseason anyways but there is rarely any junk in them. anyone else do this?
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Starting your sled will cause condensation when it cools back down. Your much better off fogging it so everything is covered in oil all summer.
 
captnviper said:
Starting your sled will cause condensation when it cools back down. Your much better off fogging it so everything is covered in oil all summer.
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never thought of it that way. just always figured regular operation was good. i keep my sleds in my garage and literaly start them up multiple times a month. what can i say, i'm a junkie for 2-stroke smoke!
 
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