TROUBLESHOOTING
SECTION 7
Page 104 CMD-3967823 / 90-865237030 OCTOBER 2003
CE536
Poor Performance
Possible Cause Remedy
Throttle not fully open
Inspect throttle cable and linkages for
operation.
Damaged or improper propeller Replace.
Excessive bilge water Drain and check for cause of entry.
Boat overloaded or load improperly
distributed
Reduce load or redistribute load more
evenly.
Boat bottom fouled or damaged. Clean or repair as necessary.
Air in fuel injection system. Purge fuel injection system.
Clogged fuel or air filters. Replace filters.
Fuel leakage from overflow valve.
Incorrect valve clearance adjustment.
Deteriorated injection pump governor
spring.
Have inspected by an authorized
Cummins MerCruiser Diesel dealer /
Uneven fuel injection amount between
cylinders.
distributor.
Cylinder compression pressure leakage.
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