Sea-doo SP Shop Manual page 25

ENGINE DETONATION OR PINGING
OTHER OBSERVATION
Ignition
Engine temperature
ENGINE LACKS ACCELERATION OR POWER
OTHER OBSERVATION
Engine revs lower than its
maximum operational RPM
(787 engine)
Peak performance is delayed
until higher RPM range is
reached (787 engine)
ENGINE RUNS TOO FAST
OTHER OBSERVATION
Engine RPM too high
Jet pump cavitation
ABNORMAL NOISE FROM PROPULSION SYSTEM
OTHER OBSERVATION
Sub-Section 01 (TROUBLESHOOTING CHART)
POSSIBLE CAUSE
• Timing too far advanced
• Spark plug heat range too high
• Defective ignition module
• Engine overheats
• Fuel of poor quality
POSSIBLE CAUSE
• Weak spark
• Carburetion, jetting too rich/lean
• Throttle does not open fully
• Low compression
• Exhaust system restriction
• Water in fuel or oil
• Debris in carburetor needle valve
• Impeller leading edge damaged
• Twisted crankshaft
• RAVE valve does not open
• RAVE valve is stuck opened
POSSIBLE CAUSE
• Faulty rev limiter
• Improper impeller pitch (too low)
• Damaged leading or trailing edge of
impeller
• Sealing of ride shoe or jet pump sup-
port/jet pump
POSSIBLE CAUSE
• Weeds/debris caught in intake grate or
impeller
• Low oil level in pump housing
• Worn anti-knocking system
• Damaged or bent drive shaft
• Broken motor mounts
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Section 02 TROUBLESHOOTING
REMEDY
• Check/reset
• Check/change to correct range
• Check/replace, refer to section 07-02
• Check, refer to engine overheats
• Use good quality fuel
REMEDY
• Check/replace, refer to section 07-02
• Check/adjust, refer to section 05-04
• Check/readjust, refer to section 05-04
• Check/repair, refer to section 03-05
• Check/clean
• Check/siphon/replace
• Check/clean, refer to section 05-04
• Check/replace, refer to section 08-02
• Check, refer to section 03-06
• Check, refer to section 03-05
• Check, refer to section 03-05
REMEDY
• Check, refer to section 07-02
• Check/replace, refer to section 08-02
• Check/replace
NOTE: Leading edge damage contributes to
poor performance from start. Trailing edge
damage contributes to poor top performance
and stator vanes erosion.
• Check/reseal, refer to section 08-02
or 11-02
REMEDY
• Check/clean
• Check/troubleshoot source of leak/refill
supply, refer to section 08-02
• Check/replace pusher in cover, refer to
section 08-02
• Check/replace, refer to section 08-03
• Check/replace, refer to section 03-03
02-01-3