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CA445
Engine Runs Rough, Misses And/Or Backfires
Possible Cause Remedy
Idle speed too low
EFI Models: Have EFI system checked by an
Authorized MerCruiser Dealer.
Choke not operating properly.
Carburetor Models: Check choke linkages for
binding or an obstruction.
Faulty ignition system component Service ignition system
Clogged fuel filters. Replace filters.
Stale or contaminated fuel. If contaminated, drain tank. Fill with fresh fuel.
Kinked or clogged fuel line or fuel tank vent line.
Replace kinked lines or blow out lines with
compressed air to remove obstruction.
Flame Arrestor plugged with foreign material. Clean Flame Arrestor.
EFI System fault (If So Equipped). Have EFI System checked.
CA446
Poor Performance
Possible Cause Remedy
Throttle not fully open
Inspect throttle cable and linkages for proper
operation.
Damaged or improper propeller. Replace propeller
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.
Flame Arrestor dirty. Clean Flame Arrestor.
EFI System fault (If So Equipped). Have EFI System checked.
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