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post #1 of 7 (permalink) Old 01-11-2017, 03:22 AM Thread Starter
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Sled floods itself

Am working on a 1998 RMK 500 snowmobile (Same as the one i own). I just did a engine rebuild+top end, fuel lines (tank and all others), new carb floats, gas shut off switch. The sled runs great and works like a beast however after 1-2 hrs of riding when you shut if off for 5-10mins and try to restart it the seld is 100% flooded i checked all carb settings, shut off switch and i cant find a single issue why the sled is flooding itself after that little amount of time, any thoughts? Thanks guys!

Current Sleds
1998 Polaris RMK 500 xtra-10 (Brand new engine re-build) 200Miles
1990 50th year anniversary 500 Indy Polaris 3000Miles
1994 Indy 500 Trail sled ???Miles

RETIRED
1994 Artic Cat Jag 440 6000Miles

Went from 8 sleds down to 2 sleds riding with
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post #2 of 7 (permalink) Old 01-11-2017, 05:31 AM
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leaky seats

leaky fuel pump (leaking through the pulse hose).

choke cable to tight, runs rich and then floods.

2015 Skidoo Renegade BC 600 Etec
1996 Skidoo Touring E 380F (sister's)
1995 Skidoo Summit 583 LQ
1999 Arctic Cat Jag 340F
1999 Arctic Cat Z 370F (son's)
1985 Skidoo Tundra 250F

Currently working on:
1995 Summit 583 (friends)
1995 Summit 470 (friends)
1992 Polaris GT 440 (son's)
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post #3 of 7 (permalink) Old 01-11-2017, 08:35 AM
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Did you just put new floats in or did you adjust the float?
Did you put a piece of hose on the fuel inlet and see where the float turns off?
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post #4 of 7 (permalink) Old 01-11-2017, 12:38 PM
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The heat of the engine could also be expanding the gas and flooding the engine. Try holding the throttle open a bit when pulling the rope, that may help clear the over-rich condition. That is very common on the Edge models and Gen II models with rack carbs, not as bad on the VM Mikuni carbs.. but it's worth a shot.

You could also turn the gas off when you stop, but that is a pain to do that every time. Like KC said, see if you have leaking inlet needle/seats, that may be the culprit.

2007 Dragon RMK 700 155", 2008 RMK 600 155", 95 Prowler 550 2-up, Really OLD AC Cheetah

http://www.avalanche.org/accidents.php
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post #5 of 7 (permalink) Old 01-12-2017, 06:33 AM
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Check the other post in this section about how to adjust the floats!
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post #6 of 7 (permalink) Old Yesterday, 02:09 PM Thread Starter
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We replaced the floats themselfs, we couldn't find a issue with adjusting them took them to a shop and had them set 100% perfect, the fuel pump,has 0 leaks period we already checked, the choke has been adjusted multiple times to try and adjust for this issue (choke is set back to factory amount). Going up in a few days and will try the throttle trick to see if it works.
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post #7 of 7 (permalink) Old Yesterday, 07:11 PM
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If the carb is tuned too rich, they can be hard to start after shut down. A little throttle is needed to clear it out.

- 2000 Yamaha Mountain Max 700

- 1979 Yamaha Exciter 440

2017 Season Mileage: 53
2017 Season Snowfall: 151"
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