SEA DOO GS / GTS / GTI / GTX / GTX RFI / GTX DI / RX / RX DI / XP TROUBLESHOOTING CHART
The following is provided to help in diagnosing the probable source of troubles. It is a guideline and should not be assumed to have all causes for all problems.
NOTE: On RFI and DI models, always check for fault codes recorded in the MPEM first using the VCK (vehicle communication kit (P/N 529 035 676). The MPEM programmer (P/N 529 035 718) can be used on the RFI models. If a fault code is detected, service the fault code and recheck operating conditions. Refer to Diagnostic Procedures in ENGINE MANAGEMENT section.

ENGINE HARD TO START

OTHER OBSERVATION
POSSIBLE CAUSE
REMEDY
  •   Water in fuel reservoir •   Flush reservoir and refill with fresh gas
  •   Mechanical engine failure •   Check cylinder compression
•   Check for crankcase leaks
•   Check starting system
  •   Spark plug faulty, fouled or worn out •   Check spark plug condition
  •    Low fuel pressure
(RFI and DI models)
•   Check fuel pump operation. Refer to
ENGINE MANAGEMENT
•   Check fuel pressure regulator. Refer to
ENGINE MANAGEMENT
  •    Low air pressure (DI models) •   Check air compressor system. Refer to
ENGINE MANAGEMENT
•   Check RAVE valve for leaks

ENGINE STARTS BUT RUNS ONLY AT IDLE SPEED

     
 

•     DI models: The DI system is in limp
home mode.

 

•   Refer to section ENGINE and check
the fault codes in the MPEM

ENGINE MISFIRES, RUNS IRREGULARLY

 

•   Fouled, defective, worn spark plugs

•   Check/verify heat range/gap/replace

  • Faulty MPEM •   Check, refer to section ELECTRICAL
SYSTEM or ENGINE MANAGEMENT
on RFI and DI models
  •   Faulty ignition module
(if so equipped)
• Check, refer to ELECTRICAL SYSTEM
  •   Sheared flywheel key •   Check timing mark, refer to section
ELECTRICAL SYSTEM
  •   Too much oil supplied to engine •   Adjust oil injection pump
  •   Bad ignition ground wiring •   Check wiring condition and proper
grounding of ignition coil
  •   Faulty ignition coil, ignition generatorcoil, trigger coil (if so equipped) orbad connector


•   Check coil. Refer to ELECTRICAL SYSTEM

 

•   Low fuel level

•   Check/refill

  •   Low fuel pressure
(RFI and DI models)
•   Check pump, regulator, injectors and
hose pinchers or if filter is plugged.
Replace if necessary
  •   Stale or water fouled fuel •   Check/siphon and refill
  •   Fuel filter dirty or restricted
•   Check/clean/replace
  •   Carburetion dirty or out of adjustment
(carburetor models)
•   Check/clean/adjust, refer to section
FUEL SYSTEM

Lean fuel mixture
Dry spark plug (exceptwhen water fouled)

•   Clogged fuel injectors
(RFI and DI models)
•   Remove and clean fuel injectors
  •    Clogged direct injectors
(DI models)
•   Remove and clean direct injectors
  •    Defective sensor or MPEM
(RFI and DI models)
• Check faulty codes in MPEM
memory, refer to section ENGINE
MANAGEMENT
  •    Leaking crankshaft seal(s) or intake
(carburetor models)
•   Pressure check engine, refer to section
ENGINE
  •    Restricted fuel valve
(carburetor models)
•   Check/replace
 

•    Loose carburetor (carburetor models)

•           Tighten carburetors
Rich fuel mixture Fouled spark plug
  Partially closed choke (carburetor models) Check/adjust choke cable
  Flame arrester dirty or restricted (if so equipped) Check/replace
  Carburetor adjustment (carburetor models) Check/adjust, refer to section FUEL SYSTEM
  Loose main jet (carburetor models) Check, refer to section FUEL SYSTEM
  Improper air/fuel rail pressure (DI models) Check pressures, refer to ENGINE MANAGEMENT
  Fuel injector(s) (RFI and DI models) Remove and replace fuel injector(s), refer to section ENGINE MANAGEMENT
  Direct injector(s) (DI models) Remove and replace direct injector(s), refer to section ENGINE MANAGEMENT
  Defective sensor or MPEM (RFI and DI models) Check faulty codes in MPEM memory, refer to section ENGINE MANAGEMENT

 

Rotary valve shaft seal leaking (if so equipped) Check/replace, refer to ENGINE
  Damaged reed valve (if so equipped) Check, refer to Bottom End in ENGINE SECTION
  Leaking crankshaft seal(s) or intake (DI models) Pressure check engine, refer to section ENGINE
  Leak in RAVE valve system (DI models) Check, refer to ENGINE MANAGEMENT
  Oil injection pump adjustment Check/adjust, refer to section LUBRICATION SYSTEM
  Worn needles and seals (carburetor models) Check, refer to section FUEL SYSTEM
  Excessive rotary valve clearance (if so equipped) Check, refer to ENGINE
  Fuel pressure and/or air pressure fluctuating (DI models) Inspect fuel and air pressure regulators. Refer to ENGINE MANAGEMENT
  High fuel pressure (RFI and DI models) Check pump, regulator, injectors, hose pinchers or if filter is plugged. Replace if necessary
Start but run poorly
 
  • RFI and DI models: Check spark plug condition, check fault codes in the MPEM memory, check fuel pressure, check RAVE valves operation
  • Check, refer to section ENGINE MANAGEMENT. If some work has been performed on the unit, make sure injector wire connectors were not mixed. Refer to the wiring diagram for wire colors and positions
Also fuel injection misinjecting
 
  • DI models: Bent or missing tooth on encoder wheel
  • RFI models: Bent or missing tooth on trigger wheel
  • Check, refer to ENGINE MANAGEMENT under Component inspection and adjustment
Difficult to start
 
  • Incorrect rotary valve timing (if so equipped)
  • Excessive rotary valve clearance (if so equipped)
  • Check/adjust, refer to ENGINE
  • Check, refer to ENGINE

ENGINE CONTINUALLY BACKFIRES

Weak spark
•    Fouled, defective spark plugs • Clean/replace
•    Malfunction of rev limiter in MPEM •   Clean/replace, refer to section
ELECTRICAL SYSTEM
Spark plugs
•   Spark plug leads or wiring reversed •   Check with wiring diagram
Ignition timing/TDC setting
•    Incorrect setting •   Check/reset, refer to section
ELECTRICAL SYSTEM
•   Sheared flywheel key •   Check/replace, refer to sections
ELECTRICAL SYSTEM and ENGINE

Rotary valve

(if so equipped)
•    Incorrect timing •   Check/reset, refer to ENGINE

Carburetor

(if so equipped)
•   Carburetion too lean •   Check/adjust, refer to section FUEL
SYSTEM
Engine
• Intake leak/crankshaft seal failure
(carburetor models)
•   Pressure check engine, refer to section
ENGINE

ENGINE DETONATION OR PINGIN

Ignition
• Timing too far advanced •   Check/reset
•   Spark plug heat range too high •   Check/change to correct range
Engine temperture
•    Engine overheats • Check, see engine overheats
•   Fuel octane too low of poor quality •   Use good quality fuel
     
     
     
     
 
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