BOMBARDIER ski-doo Tundra Scandic 2004 Series, Shop Manual, Page: 80 / 427

Section 03 TROUBLESHOOTING
Subsection 03 (FUEL AND OIL SYSTEMS)
MMR2004-107_03_03A.FM
03-03-3
SYMPTOM HIGH INJECTION OIL CONSUMPTION.
CONDITION NORMAL USE.
6. Check pump.
a. Leaking pump.
Replace.
7. Check oil pump cable.
a. Cable stuck in open position.
Replace cable.
8. On liquid-cooled models, test pump shaft gear reservoir for leaks.
a. Leaking seals.
Replace seals.
SYMPTOM ENGINE LACKS FUEL (or lean mixture).
CONDITION NORMAL USE.
Test/Inspection 1. Check fuel filter ball located in fuel tank. Ball must move freely.
a. Corrosion due to oxidation at installation.
Replace fuel filter.
2. Check if lines are perforated or kinked or if they leak at fittings.
a. Lines are too big for their fittings or are improperly routed.
Replace or properly relocate lines.
3. Check fuel pump outlet flow.
a. Dirt clogging fuel pump lines or torn membrane.
Clean or replace fuel pump.
4. Check needle valve of carburetor(s).
a. Dirt (varnish, foreign particle) clogging fuel line inlets.
Clean.
5. Check main jet.
a. Dirt (varnish, foreign particle) accumulation at main jet.
Clean.
6. Check float height in carburetor bowl(s).
a. Running out of fuel at high speed because float height is too low.
Adjust float height according to specifications.