VPA 7743722 English 10-2004 103
Troubleshooting
Troubleshooting - System Isolation
The following troubleshooting guide is provided to help you isolate a malfunction of one or more of your boat’s
systems. After determining which systems are affected by the malfunction, refer to the individual system
troubleshooting charts to isolate the specific cause.
Table 1: System Isolation
Engine Does
Not Start
Cranking
System
Engine should crank at specified RPM. If not, check for:
1. Discharged or dead battery.
2. Loose or corroded connections.
3. Cranking System Troubleshooting Chart in the Electrical Igni-
tion/Fuel Service Manual.
Ignition
System
Must have good spark at spark plugs. If not, check the:
1. Distributor cap.
2. Coil and spark plug leads.
3. Ignition timing.
4. Automatic spark advance.
5. Appropriate Ignition Troubleshooting Chart in the Electrical/Igni-
tion/Fuel Service Manual.
6. EFI Models: Refer to EFI Diagnostic Manual.
Fuel
System
EFI Models: Refer to EFI Diagnostic Manual
Carbureted Models: Carburetor accelerator pump should squirt fuel into
the Venturi when throttle is advanced. If not, check the:
1. Fuel tank, valves, and lines.
2. Fuel pump and filter.
3. Carburetor and filter.
4. Boat Fuel System Troubleshooting Chart.
5. Carburetor Troubleshooting Chart.
6. Engine Fuel System Troubleshooting Chart.
Engine Runs Improperly
Check the following:
1. Compression.
2. Ignition system.
3. Fuel and carburetor and injection system.
4. Lubrication system.
5. Cooling system.
6. Sterndrive and propeller.
7. PCV valve.
8. Engine Troubleshooting Guides.
Troubleshooting
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