Ski-Doo ELITE SERIES User Manual

Section 03 TROUBLESHOOTING
Subsection 01 (ENGINE)
ENGINE GENERAL
SYMPTOM ENGINE BACKFIRES.
CONDITION NORMAL USE.
1. Check spark plug.
a. Carbon accumulation caused by defective spark plug.
Clean carbon accumulation and replace spark plug.
2. Check leakage on intake manifold.
a. Air leak on intake system.
Retighten screws and/or replace intake manifold gasket.
3. Check exhaust air leaking.
a. Exhaust gasket is leaking.
Retighten screws and/or replace exhaust gasket.
4. Check intake valve(s) for leaking.
a. Intake valve(s) is(are) leaking.
Repair or replace valve(s).
5. Check if fuel supply is sufficient at high RPM.
a. Fuel line is contaminated and/or bent (engine gets lean).
Clean and/or replace defective part(s).
TEST/INSPECTION
6. Check fault codes in B.U.D.S. system.
a. Check if electrical actuator(s) is/are defective.
Replace defective part(s) (refer to COMPONENT INSPECTION AND ADJUSTMENT).
SYMPTOM ENGINE SUDDENLY TURNS OFF.
CONDITION NORMAL USE.
1. Perform engine leak test. Refer to ENGINE LEAK TEST procedure. Check for possible piston seizure.
a. Damaged head gasket and/or seal and/or leaking inlet/exhaust valve(s).
Replace and/or repair defective parts.
2. «Four-corner» seizure of piston.
a. Accelerating too fast when engine is cold. Piston expands faster than cylinder.
Replace pistons. Ask driver to refer to warm-up procedure in Operator’s Guide.
TEST/INSPECTION
3. Piston seizure (from arrow to piston exhaust side).
a. Spark plug heat range is too hot.
Install spark plug with appropriate heat range (refer to TECHNICAL DATA).
b. Compression ratio is too high.
Install genuine parts.
c. Poor oil quality.
Use BOMBARDIER oil.
d. Leaks at air intake manifold (engine gets too lean).
Retighten screws or replace air intake manifold gasket.
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Ski-Doo ELITE SERIES Specifications

General

Brand	Ski-Doo
Model	ELITE SERIES
Category	Offroad Vehicle
Language	English