Operating instructions

72
Engine Will Not Start
Engine Misfires, Runs Irregularly
OTHER OBSERVATION POSSIBLE CAUSE REMEDY
Engine does not turn over.
• Safety lanyard removed.
Install cap over post.
• Burnt fuse on MPEM or in rear
electrical box: battery, starting
system, fuel pump.
Check wiring then replace fuse(s).
• Discharged battery.
Refer to an authorized SEA-DOO
dealer.
• Battery connections, corroded or
loose.
Refer to an authorized SEA-DOO
dealer.
• Water-flooded engine.
Refer to WATER-FLOODED EN-
GINE in SPECIAL PROCEDURES.
• Faulty sensor or MPEM.
Refer to an authorized SEA-DOO
dealer.
• Seized engine.
Refer to an authorized SEA-DOO
dealer.
• Seized jet pump.
Try to clean. Otherwise, refer to an
authorized SEA-DOO dealer.
Engine turns slowly.
• Loose battery cable connections.
Check/clean/tighten.
• Discharged or weak battery.
Refer to an authorized SEA-DOO
dealer.
• Worn starter.
Refer to an authorized SEA-DOO
dealer.
Engine turns normally.
• Fuel tank empty or water-
contaminated.
Refill. Siphon and fill with fresh fuel.
• Fouled/defective spark plugs.
Replace.
• Faulty component in the fuel in-
jection system.
Refer to an authorized SEA-DOO
dealer.
• Burnt fuel pump fuse.
Check wiring then replace fuse.
• Electrical problem.
Refer to an authorized SEA-DOO
dealer.
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 en-
gine.
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.
• Clogged injectors.
Refer to an authorized SEA-DOO
dealer.
• Defective sensor or MPEM.
Refer to an authorized SEA-DOO
dealer.
Rich fuel mixture
(high fuel consumption).
• Flame arrester dirty/clogged
(if so equipped).
Clean or replace.
• Defective sensor or MPEM.
Refer to an authorized SEA-DOO
dealer.
smo2003-005a.book Page 72 Friday, November 1, 2002 8:25 AM