rgoers

I seem to remember something similar last season, but I wish I knew WHY. Seems the first few times I run the Doo, it smokes like crazy. Then, when I park it, I come out the next day to a two foot diameter puddle of oil on the garage floor.

Assuming I have the oiler set properly (it doesn't smoke the rest of the season, and uses oil at a rate consistent with a 50:1 ratio), how is THAT much oil getting into the pipe?

__________________
2004 Polaris Trail RMK 136
1997 Ski Doo Summit 500
2000 Arctic Cat ZL550 ESR (in NY)
2000 Arctic Cat 440 Panther (sold)
1980 Arctic Cat Jag 3000 F/C (in NY)

"If it ain't broke, take it apart and find out why!"

smallengineguy

Replace the pump. The seal may be gone, allowing oil to get into the engine. Pumps are cheap.

__________________
1992 Ski Doo Mach 1 (SC-10/2 suspended) March '07 SF.com Sled of the Month! (Lost in fire 4-13)
1992 Ski Doo Mach 1 original
2006 Ski Doo MXZ 500SS

Webmaster Evergreen Valley Snowmobile Club
SledNH.com Moderator

rgoers

Couldn't I just replace the seal then? Looks like pump would run about $40 or so... used, on eBay.

__________________
2004 Polaris Trail RMK 136
1997 Ski Doo Summit 500
2000 Arctic Cat ZL550 ESR (in NY)
2000 Arctic Cat 440 Panther (sold)
1980 Arctic Cat Jag 3000 F/C (in NY)

"If it ain't broke, take it apart and find out why!"

smallengineguy

Not sure if the pump seals are servicable. Check www.hlsm.com and see if the ycan be replaced.

__________________
1992 Ski Doo Mach 1 (SC-10/2 suspended) March '07 SF.com Sled of the Month! (Lost in fire 4-13)
1992 Ski Doo Mach 1 original
2006 Ski Doo MXZ 500SS

Webmaster Evergreen Valley Snowmobile Club
SledNH.com Moderator

gary_warner4

I have a 1999 formula deluxe 670 with the same problem. My dealer says it is the oil seal on the rotary valve shaft.

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