TROUBLESHOOTING
93
Engine Runs Erratically
POSSIBLE CAUSES
• Spark plugs fouled or defective. Refer to Maintenance
section.
• Incorrect setup and adjustments.
• Fuel is being restricted to the engine.
a. Engine fuel filter is obstructed. Refer to Maintenance
section.
b. Fuel tank filter obstructed.
c. Stuck anti-siphon valve on built in fuel tank.
d. Fuel line is kinked or pinched.
e. Injector plugged.
• Threaded connection of an air hose is loose.
• Fuel pump failure.
• Ignition system component failure.
Performance Loss
POSSIBLE CAUSES
• Throttle not opening fully.
• Damaged propeller or improper propeller size.
• Boat overloaded or load improperly distributed.
• Excessive water in bilge.
• Boat bottom is dirty or damaged.
• Warning horn failure.
• Engine block pressure sensor or coolant temperature sensor
failure (Guardian is activated).
Warning Horn Activates (With Power Loss)
POSSIBLE CAUSES
• Intermittent horn sound:
• The oil level in the engine-mounted oil reservoir tank is low.
Refill the reservoir tank and the remote oil tank. Refer to
Fuel and Oil for details.
• Battery voltage is out of limits.
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