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Discussion Starter #1
Just picked up a 96 formula 500 and am having some troubles with it in the cold.

When the sled sits in the garage say about an hour or two she runs mint no problems whatsoever but when I leave it outside in the cold she’s a pain to start and when she does barley goes idles fine but when you get around 3500-4000rpm clutch engages and just bogs right down. The thing is sometimes after a few tries in the cold she’ll go fine for about two minutes then bog right back down again and die.

Any suggestions?
 

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Clean the carburetors, use good carb cleaner and a small piece of wire in all the jets and passages. Also replace the fuel filter as well. Even if the old owner claimed he did them do them anyways. All it takes is a small piece of something to cause an issue like that. Sounds like the pilot jet is clogged as well. Also rebuild or replace the fuel pump. Drain all the old gas in case you didn't do that when you bought it.
 

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Probably water in the fuel. While it is always a good idea to clean the carbs, I'd try just pouring some ISO-HEET in the gas (red bottle) and let it sit overnight. Then shake the machine to shake up the gas tank, start it and see if it still does it.

Better thing to do is drain the gas, remove the access plugs off the bottom of the carbs and let the fuel drain out of the carbs. Put fresh gas in and a bottle of ISO-HEET.

Best thing to do is everything Coolhand suggest.
 
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