rosem1231

Cooked a cylinder in my 99 670HO. Seems as if the failed cylinder had a lean oil condition. Is it common to see this in only one cylinder as the other cylinder is fine?

IndianRvrShiver

What leads you to the lean oil conclusion?? Usually a piston is more susceptible to a lean fuel condition. Has the wrist pin turned blue due to heat??

__________________
********************
2003 AC F5 (Jr's Dec 07 SOTM & 2008 SOTY)
2003 AC F7 EFI SP (April 06 SOTM)
********************

smallengineguy

__________________
1992 Ski Doo Mach 1 (SC-10/2 suspended) March '07 SF.com Sled of the Month!
1993 Ski Doo Mach Z 780 triple
2001 Ski Doo Mini Z



Evergreen Valley Snowmobile Club Webmaster

If I'm not home, CHECK THE TRAILS!

SkiDooFormulaMX

nice link seg!

__________________
2003 ARCTIC CAT ZL 600 EFI SS-2700 MILES-GETTING SOME MILD TWEAKING THIS SUMMER

2002 ARCTIC CAT Z 440 ES-622 MILES-MINT, JUST LOOKING FOR SOME STUDS AND FATBOY TORSIONS.

1997 ARCTIC CAT EXT 580 EFI DLX 4000 MILES-SOLD 8/08

1998 ARCTIC CAT ZR 600 EFI-3700 MILES-BUILT-SOLD-9/07

1996 INDY CLASSIC 500 ESR-5100 MILES-SOLD 4/08

1987 SKI DOO FORMULA MX 470-12000 MILES-SOLD 12/07