Troubleshooting Engine Will Not Crank Starter Circuit - Check: ‰ Battery condition: weak, dead, sulfated, bad cells. ‰ Battery cables–for loose or corroded connections. ‰ Shorted or open ignition switch. ‰ Starter motor and solenoid–for shorts, grounds, or open circuits. ‰ Starter assist solenoid/starter relay. ‰ Circuit breakers. ‰ Wiring, from battery to ignition switch. ‰ See Electrical/Ignition/Fuel Service Manual . Engine Cranks, But Will Not Start Ignition Circuit - Check: ‰ Primary circuit wiring, from ignition switch to ignition coil/ignition module. 7743722 - Downloaded from www.volvopenta.com 13/05/2008 20:17:06 ‰ Secondary circuit wiring, from coil to spark plug.
‰ Spark plugs–for proper gap, fouling, burned electrodes, or cracked/dirty insulator. ‰ See Electrical/Ignition/Fuel Service Manual . ‰ Low battery voltage. Fuel System - Check: ‰ Quantity and condition of fuel in boat tank. ‰ Operation and flow capacity of boat anti-siphon valve. ‰ Fuel tank vent is unrestricted. ‰ Fuel tank pick-up screen is clean. ‰ Correct diameter/unrestricted boat fuel lines. ‰ Fuel shutoff and multiple tank valves are open and operating proper- ly. ‰ Fuel pump vent hose–for signs of fuel or oil that would indicate a fuel pump failure. ‰ Fuel pump/relay/circuit breaker operation. ‰ External fuel filter canister and carburetor filter. ‰ Carburetor accelerator pump.
‰ See Electrical/Ignition/Fuel Service Manual . VPA 7743722 English 10-2004 105