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12-23-2005, 11:16 AM
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#1 (permalink)
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Registered User
Join Date: Dec 2005
Location: New York
Posts: 20
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dumping fuel through manifold
OK so this formula plus keeps geting better and better.. I think theres something wrong with the carbs..
I pulled the exhaust off to fix the Recoil that broke. and the air box. and pulled to make sure the recoil was good b4 i put it all back together and GAS dumped out of my pipe and out of the header every time i pull the cord. so i took the spark plugs out and its like a GEISER when I pull. what the heck is going on with this thing...? does it just need the carbs re-tuned or do i have something much more serious going on????
Last edited by BC_Dan; 12-31-2012 at 07:50 PM.
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12-23-2005, 11:25 AM
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#2 (permalink)
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King of the Universe
Join Date: Jan 2005
Location: Rochester Hizzle, MI
Posts: 6,678
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You made the exact same post in your other thread!!
__________________
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2003 AC F5 (Jr's Dec 07 SOTM & 2008 SOTY)
2003 AC F7 EFI SP (April 06 SOTM)
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"It's a public access forum, you post stupidity, expect to get flamed." - RJ Gleason
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12-23-2005, 11:46 AM
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#3 (permalink)
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Go Wings!
Join Date: Jan 2004
Location: Ohio
Posts: 3,636
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he probably doesnt want separate questions getting lost so made a new thread...
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12-23-2005, 04:22 PM
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#4 (permalink)
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I am Spartacus
Join Date: Feb 2004
Location: Milton Mills, NH
Posts: 23,200
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The float needles aren't closing to stop the flow of fuel to the carbs. Go to the carb cleaning section in the engine how-tos.
__________________
1992 Ski Doo Mach 1 (SC-10/2 suspended) March '07 SF.com Sled of the Month! (Lost in fire 4-7-13)
1992 Ski Doo Mach 1 original
2006 Ski Doo MXZ 500SS
1999 Ski Doo Grand Touring
Webmaster Evergreen Valley Snowmobile Club
SledNH.com Moderator
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12-26-2005, 12:13 AM
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#5 (permalink)
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Registered User
Join Date: Dec 2005
Location: New York
Posts: 20
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yeah Im just gonna go pick up a rebuild kit. and rebuild them both. but I apreciate the help guys. hopefuly this machine will be good to go for the next BLIZARD..
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12-26-2005, 12:14 PM
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#6 (permalink)
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Registered User
Join Date: Jan 2005
Location: ALLISTON ONTARIO
Posts: 1,232
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good luck gettin it goin, we got dumped on last night and theres kind of enough to go out again, but my sled isnt done getting the clutch rebult, should be done today or tomorrow though hopefully.
__________________
truck- 2003 silverado LS 2500HD 4X4 DURAMAX DIESEL extended cab short box. all stock (for now) soon to come: 4" MBRP exhaust (straight pipe) intake, and custom EFI LIVE tuning
sled- currently sledless, sold it at the bigginging of last season
bikes- 2000 Honda 300 Fourtrax 4X4 (winch)
2007 Honda CRF 230
2003 Honda CRF 230
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12-26-2005, 04:54 PM
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#7 (permalink)
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I am the Walrus
Join Date: Aug 2005
Location: Western NY
Posts: 1,489
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my sled did that after i left the rear end up about shoulder hieght for a week, i had to take the skid out.
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My Pics
1999 Arctic Cat ZL 440
1994 SkiDoo Mach 1 583
1995 Honda CR 125R
1982 Camaro w/ 355
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12-31-2005, 04:23 PM
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#8 (permalink)
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Registered User
Join Date: Dec 2005
Location: New York
Posts: 20
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wait. I had the rear up for a LONG time.. never thought it would cause a problem.. tell me more
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12-31-2005, 05:45 PM
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#9 (permalink)
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I am Spartacus
Join Date: Feb 2004
Location: Milton Mills, NH
Posts: 23,200
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If the rear of the sled is off the ground, it may not let the floats close properly, flooding the engine.
__________________
1992 Ski Doo Mach 1 (SC-10/2 suspended) March '07 SF.com Sled of the Month! (Lost in fire 4-7-13)
1992 Ski Doo Mach 1 original
2006 Ski Doo MXZ 500SS
1999 Ski Doo Grand Touring
Webmaster Evergreen Valley Snowmobile Club
SledNH.com Moderator
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12-31-2005, 08:05 PM
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#10 (permalink)
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I am the Walrus
Join Date: Aug 2005
Location: Western NY
Posts: 1,489
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i had about 5 gallons of gas in the pipe. i was scared to take the springs off to dump it out, sometimes if it slips out of the pliers it will spark. i put a screwdriver through the loop and pulled them off that way. i found out that neither of my fuel shut off valves worked because i had them in the off position.
__________________
My Pics
1999 Arctic Cat ZL 440
1994 SkiDoo Mach 1 583
1995 Honda CR 125R
1982 Camaro w/ 355
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01-02-2006, 10:25 AM
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#11 (permalink)
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Registered User
Join Date: Dec 2005
Location: New York
Posts: 20
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so maybe I don't need to rebuild my carbs then??
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01-02-2006, 10:44 AM
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#12 (permalink)
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Registered User
Join Date: Dec 2005
Location: New York
Posts: 20
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so what did u do next. I assume the motor needs to be drained of the excess fuel.
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12-31-2012, 06:16 PM
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#13 (permalink)
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Registered User
Join Date: Dec 2011
Location: West Michigan
Posts: 1
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Hi guys, i just seached and found this. I had the rear of my mach 1 lifted up for about a week. drove it about a mile and shut it off. Now its floods both cylinders on one pull, does the float arm get damaged somehow?
Thanks
Cory
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12-31-2012, 07:56 PM
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#14 (permalink)
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Super Moderator
Join Date: Jan 2004
Location: oregon
Posts: 10,937
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Shades of old threads!
Almost always, the reason for fuel to flood like that is a sticking inlet needle/seat. Usually, it's varnish or some kind of debris in the inlet that sticks the needle open. Gas flows big time and can leak by the needle, filling the crankcase from gravity only. When you pull the rope, you are throwing the raw gas from the crankcase into the combustion chamber, which can hydro-lock the engine.
It's possible a float is the problem, but not often. Sometimes floats get saturated and don't 'float' and will press on the inlet needle, allowing gas to flow. Sometimes the arm gets bent or the float gets out of adjustment. Neither of those is common.
Another possibility, but usually only on one cylinder, is a hole in the fuel pump diaphragm. If there's a hole, gravity will feed gas through the hole and into the crankcase through the impulse line. That is easy to check; take the impulse line off either the fuel pump or the crankcase. If there's gas in the line, the fuel pump may have a hole.
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