Knight

I have a "03" Venture 700 w/ 650 miles. It was running like crap, so I cleaned the carbs. While reinstalling the carbs, I noticed coolant in the clear compression hose that runs to the fuel pump. Coolant level was down. Now it idles high and floats. I can't get the idle down unless, I apply some choke.
What causes head gasket failure on a low milage machine? I did have a backfire last year that blew the expansion camber off the springs.

RJ Gleason

Could be head gasket, base gasket or crack in the wall. Only one way to find out.

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Old Cat Rider


w/ Comet 108 Pro-4 clutch


80 PANTERA 500 F/C w/ Comet 102 clutch

'90 Wildcat Project in progress.

Trail Boss; Dryden to Summerhill trail.
http://www.dcdrifters.net/

Senior Deacon; F&AM Lodge# 472

smallengineguy

Failure can be caused by a number of things. The backfire is a good way, it could have torn the O-ring on the top of the jug.

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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!

Knight

UPDATE;
Not a head gasket problem. The green coolant I saw in the fuel line was oil injection line to the fuel pump. The coolant level down was coolant lost carb cleaning.
I took the machine to a local shop and he will get the triple carbs running correctly.