Ski-Doo Ski Doo MX Z 2005 [902/1429] Fuel and oil systems 2 stroke engines

Section 02 TROUBLESHOOTING GUIDE

Subsection 03 (FUEL AND OIL SYSTEMS (2-STROKE ENGINES))

FUEL AND OIL SYSTEMS

(2-STROKE ENGINES)

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.

NOTE: For the SDI fuel and oil systems troubleshooting, also refer to appropriate ENGINE subsection.

Symptom:

HIGH FUEL CONSUMPTION OR RICH MIXTURE.

1. Check fuel tank.

- Perforated fuel tank. Replace fuel tank.

2. Check fittings on fuel pump, fuel tank and carburetor(s).

- Leaking fittings. Replace defective part.

3. Check choke adjustment.

- Fuel flows through choke circuit while engine runs. Readjust choke.

4. Check float height in carburetor(s).

- Fuel level is too high in float bowl(s). Adjust according to specifications (refer to TECHNICAL

DATA).

5. Check needle valve of carburetor(s).

- Foreign particles prevent needle valve(s) from closing and/or worn seating area. Clean or replace

needle valve(s), then clean seating area.

Symptom: FUEL LEAKS IN ENGINE BASE WHEN ENGINE IS STOPPED.

1. Check items 3, 4 and 5 of HIGH FUEL CONSUMPTION.

2. Check fuel pump diaphragm.

- Cracked diaphragm. Replace.

Symptom: ENGINE LACKS POWER OR STALLS AT HIGH RPM.

1. Check fuel tank vent hose.

- Kinked or clogged vent hose. Relocate or replace.

2. Check fuel filter.

- Clogged filter. Replace.

3. Check fuel lines.

- Kinked or clogged lines. Relocate or replace.

4. Check fuel pump flow.

- Leaking impulse hose. Replace.

- Dried diaphragm. Replace.

5. Check if carburetor(s) is (are) clean.

- Varnish. Clean.

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