SeaDoo 3D Manual page 47

OTHER OBSERVATION
Engine turns over (cont'd)
No spark at spark plugs
NOTE: Prior to replacing an ECM, refer to the ENGINE MANAGEMENT section and read carefully the
tests to do before replacing an ECM that could otherwise be good.
smr2005-046
POSSIBLE CAUSE
Defective CPS (RFI models)
Water-contaminated fuel
Dirty fuel filter
Fouled or defective spark plug
Water in engine
Carburetion (carburetor models)
Defective ignition circuit
Flooded engine: Carburetor needle
valve stuck open (carburetor models)
Excessive rotary valve clearance
Incorrect rotary valve timing
Internal engine damage
Defective trigger wheel
(RFI models)
Incorrectly aligned flywheel and rotor
(RFI models)
Insufficient engine compression
Faulty rev limiter in MPEM
(carburetor models)
Spark plug faulty, fouled or worn out
Ignition
Faulty ECM
(RFI models)
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Section 02 TROUBLESHOOTING
Subsection 01 (TROUBLESHOOTING CHART)
Check operation of CPS and replace if
necessary
Check/siphon and refill
Clean/replace
Replace
Check, refer to MAINTENANCE
Check, refer to FUEL SYSTEM
Check, refer to ELECTRICAL SYSTEM
Check, refer to FUEL SYSTEM
Check, refer to the appropriate ENGINE
SHOP MANUAL
Check, refer to the appropriate ENGINE
SHOP MANUAL
Check, refer to the appropriate ENGINE
SHOP MANUAL
Check, refer to MAGNETO SYSTEM in
the appropriate ENGINE SHOP MANUAL
Properly position flywheel and rotor, refer
to MAGNETO SYSTEM in the appropriate
ENGINE SHOP MANUAL
Replace defective part(s)
Replace MPEM
Check spark plug condition
Check, refer to ELECTRICAL SYSTEM
Replace ECM
REMEDY
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