101
Engine Misfires, Runs Irregularly
Engine Overheats
Engine Continually Backfires
Engine Pinging or Knocking
OTHER OBSERVATION POSSIBLE CAUSE REMEDY
Weak spark.
• Fouled/defective/worn spark
plugs.
Replace.
• Faulty MPEM.
Refer to an authorized Sea-Doo
dealer.
• Too much oil supplied to engine.
Improper oil pump adjustment, re-
fer to an authorized Sea-Doo deal-
er.
Lean fuel mixture.
• Fuel: Level too low, stale or water-
contaminated.
Siphon and/or refill.
• Fuel filter, clogged or water-
contaminated (carburetor-
equipped models).
Refer to an authorized Sea-Doo
dealer.
• Fuel tank valve (carburetor-
equipped models) partially open.
Turn fuel tank valve to ON position.
• Clogged injectors (RFI and DI
models).
Refer to an authorized Sea-Doo
dealer.
• Defective sensor or MPEM (RFI
and DI models).
Refer to an authorized Sea-Doo
dealer.
Rich fuel mixture
(high fuel consumption).
• Flame arrester dirty/clogged
(if so equipped).
Clean or replace.
• Partially closed choke
(carburetor-equipped models).
Refer to an authorized Sea-Doo
dealer.
• Defective sensor or MPEM (RFI
and DI models).
Refer to an authorized Sea-Doo
dealer.
OTHER OBSERVATION POSSIBLE CAUSE REMEDY
Monitoring beeper
sounds continuously.
• Clogged jet pump water intake.
Clean.
• Clogged coolant system.
Flush cooling system.
OTHER OBSERVATION POSSIBLE CAUSE REMEDY
Weak spark.
• Fouled/defective/worn spark
plugs.
Replace.
Overheated engine.
• See engine OVERHEATS.
Refer to an authorized Sea-Doo
dealer.
• Faulty rev limiter in MPEM
(carburetor-equipped models).
Refer to an authorized Sea-Doo
dealer.
• Spark plug leads or wiring re-
versed.
Connect spark plug cables at their
proper location. Otherwise, refer
to an authorized Sea-Doo dealer.
OTHER OBSERVATION POSSIBLE CAUSE REMEDY
• Poor quality gasoline/low octane.
Use well known quality and rec-
ommended gasoline.
• Spark plug heat range too high.
Use recommended spark plugs.
• Ignition timing or TDC setting).
Refer to an authorized Sea-Doo
dealer.
smo2001-003a.book Page 101 Wednesday, August 30, 2000 1:25 PM