57
Engine Misfires, Runs Irregularly
Engine Overheats
Engine Continually Backfires
Engine Pinging or Knocking
Engine Lacks Acceleration or Power
OTHER OBSERVATION
POSSIBLE CAUSE
REMEDY
Weak spark.
• Fouled/defective/
worn spark plugs.
Replace.
• Faulty rev limiter.
Refer to an authorized Sea-Doo
dealer.
• Too much oil supplied to
engine.
Improper oil pump adjustment, refer
to an authorized Sea-Doo dealer.
Lean fuel mixture.
• Fuel: Level too low, stale
or water-contaminated.
Siphon and/or refill.
• Fuel filter, clogged or
water-contaminated.
Refer to an authorized Sea-Doo
dealer.
• Fuel valve partially open.
Turn fuel valve to ON position.
Rich fuel mixture
(high fuel consumption).
• Flame arrester
dirty/clogged.
Clean or replace.
• Partially closed choke.
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 with coupler
hose.
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.
OTHER OBSERVATION
POSSIBLE CAUSE
REMEDY
• Poor quality gasoline/
low octane.
Use well known quality and
recommended gasoline.
• Spark plug heat range too
high.
Use recommended spark plugs.
• Ignition timing.
Refer to an authorized Sea-Doo
dealer.
OTHER OBSERVATION
POSSIBLE CAUSE
REMEDY
• Weak spark/incorrect fuel
mixture.
Refer to ENGINE MISFIRES, RUNS
IRREGULARLY.
• Water in fuel or injection
oil.
Siphon and replace.
Overheated engine.
• See ENGINE OVERHEATS.
smo2000-001b.fm Page 57 Tuesday, May 4, 1999 1:20 PM
www.SeaDooManuals.net
