Troubleshooting Engine Won’t Reach Operating RPM (Cont.) (Cont.) - Check: ‰ Carburetor size and type correct for engine. ‰ Fuel pump pressure and vacuum. ‰ Boat overloaded or load improperly placed. ‰ Engine overheating. ‰ Engine timing and ignition system operation. ‰ Remote control cables and linkage for proper attachment and travel. Defective Engine Lubricating System Engine Components - Check: ‰ Clogged or incorrect oil filter. ‰ Worn oil pump gears, cover, or shaft. ‰ Worn or collapsed oil pump relief valve spring or foreign material caught on valve seat. ‰ Oil pump relief valve plunger loose in cover. ‰ Damaged filter bypass grommet.
7743722 - Downloaded from www.volvopenta.com 13/05/2008 20:17:06 ‰ Clogged oil pickup screen, broken tube, or housing. ‰ Plugged crankshaft or blocked oil galleys. ‰ Dirty or defective hydraulic lifters or clogged push rod passages. ‰ Poor quality, or incorrect viscosity or quantity of oil. ‰ Incorrect hose routing on remote filter systems. ‰ Water in crankcase oil from condensation, or defective head gasket, oil cooler, or cracked manifold/block water passages. Oil Pressure Warning System - Check: ‰ Oil gauge/warning horn operation and wiring. ‰ Engine temperature. ‰ Oil pressure gauge and warning horn sender operation and wiring. 110 VPA 7743722 English 10-2004