Fuel And Oil Systems - BOMBARDIER ski-doo Tundra Scandic 2004 Series Shop Manual

FUEL AND OIL SYSTEMS

The following chart is provided to help in diagnosing the probable source of troubles. It should be used
as a guideline. Some causes or corrections may not apply to a specific model.
SYMPTOM HIGH FUEL CONSUMPTION OR RICH MIXTURE.
CONDITION NORMAL USE.
Test/Inspection
SYMPTOM FUEL LEAKS IN ENGINE BASE WHEN ENGINE IS STOPPED.
CONDITION NORMAL USE.
Test/Inspection
MMR2004-107_03_03A.FM
1. Check fuel tank.
a. Perforated fuel tank.
Replace fuel tank.
2. Check fittings on fuel pump, fuel tank and carburetor(s).
a. Leaking fittings.
Replace defective part.
3. Check choke adjustment.
a. Fuel flows through choke circuit while engine runs.
Readjust choke.
4. Check float height in carburetor(s).
a. Fuel level is too high in float bowl(s).
Adjust according to specifications (refer to TECHNICAL DATA).
5. Check needle valve of carburetor(s).
a. Foreign particles prevent needle valve(s) from closing and/or worn seating area.
Clean or replace needle valve(s), then clean seating area.
1. Check items 3, 4 and 5 of HIGH FUEL CONSUMPTION.
2. Check fuel pump diaphragm.
a. Cracked diaphragm.
Replace.
Section 03 TROUBLESHOOTING
Subsection 03 (FUEL AND OIL SYSTEMS)
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03-03-1