2005 Ski-Doo Tundra, Skandic, Expedition Shop Manual, Page 54Get this manual
Section 02 TROUBLESHOOTING GUIDE Subsection 03 (FUEL AND OIL SYSTEMS (2-STROKE ENGINES))
Symptom: HIGH INJECTION OIL CONSUMPTION1Check oil injection pump adjustment- Oil injection pump adjusted too richAdjust2Check injection pump identification- Wrong pump installedReplace with the appropriate pumpRefer to OIL INJECTION SYSTEM3Check injection oil lines and their fitting- Leaking linesReplace defective part(s)4Check injection pump cover gasket- Worn gasketReplace5Check pump check valve(s)- Check valve(s) stuck openReplace6Check pump- Leaking pumpReplace7Check oil pump cable- Cable stuck in open positionReplace cable8On liquid-cooled models, test pump shaft gear reservoir for leaks- Leaking sealsReplace seals
Symptom: ENGINE LACKS FUEL (OR LEAN MIXTURE)1Check fuel filter ball located in fuel tankBall must move freely- Corrosion due to oxidation at installationReplace fuel filter2Check if lines are perforated or kinked or if they leak at fittings- Lines are too big for their fittings or are improperly routedReplace or properly relocate lines3Check fuel pump outlet flow- Dirt clogging fuel pump lines or torn membraneClean or replace fuel pump4Check needle valve of carburetor(s)- Dirt (varnish, foreign particle) clogging fuel line inletsClean5Check main jet- Dirt (varnish, foreign particle) accumulation at main jetClean6Check float height in carburetor bowl(s)- Running out of fuel at high speed because float height is too lowAdjust float height according to specifications