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 7743722 - Downloaded from www.volvopenta.com 13/05/2008 20:17:06 VPA 7743722 English 10-2004 103 Troubleshooting Troubleshooting 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.