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post #1 of (permalink) Old 02-23-2000, 06:59 PM
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Running out of fuel

I'm working on a 81 ski doo blizzard the problem i'm having is my carbs are running out of fuel at mid to high speed. I'v replaced every fuel line including in the tank, rebuilt the fuel pump,and gone through the carbs. Still the problem exists. When i say i'm running out of fuel i mean the fuel lines to the carbs are visiably empty. The machine will not move unless you let it idle and pull up more fuel or hit the primer. From idle to mid range the sled runs fine.... Stock motor, Stock jetting.

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post #2 of (permalink) Old 02-23-2000, 11:13 PM
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Re: Running out of fuel

Sorry to see you still fighting that fuel problem on your sled ! A couple more ideas come to mind,loose or plugged pulse line from crankcase to fuel pump which may cause you fits.Also are you positive you got the fuel pump diaphragms back together in the right order and orientation ? It sounds like a problem with an easy solution but finding that bugger is gonna kill you.By the way I am Very Happy to report that after replacing the stock ski-doo clutch on my blizzard with a new Comet this sled is a Blast!Hope you find your problem as sleds should only be broken during the summer! Have a great day and good luck!

post #3 of (permalink) Old 09-18-2000, 01:35 AM
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Re: Running out of fuel

check your compression.the fuel pump works off from secondary compression,when the rings wear you'll lose this.i would buy a new fuel pump they are around 15-20 dollars. if its not a kinked line it has to be one of the two i mentioned. good luck

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post #4 of (permalink) Old 09-19-2000, 11:02 AM
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Re: Running out of fuel

I would check your pulse line very closely. Some times there is a small crack usually by one of the clamps. As also mentioned, I would go back through your pump and make sure it is put together correct. Another idea; If you have a pump you could borrow off another sled, it may help you eliminate whether or not it's the pump.

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post #5 of (permalink) Old 09-20-2000, 01:18 AM
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Re: Running out of fuel

Make sure that your tank vent line is open. You can only suck so hard, so long without venting a tank.

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post #6 of (permalink) Old 09-20-2000, 05:06 AM
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Re: Running out of fuel

good idea i forgot all about that one,it amazing how you can forget about the obvious.

motor head
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