WESTERBEKE GASOLINE GENERATOR

ENGINE TROUBLESHOOTINGPROBLEM PROBABLE CAUSE PROBLEM PROBABLE CAUSEEngine misfires. 1. Poor quality fuel. High oil pressure. 1. Dirty oil or wrong SAE type oil in the2. Incorrect timing. engine.3. Dirty flame arrester. 2. Relief valve is stuck.4. Cracked distributor cap. No DC charge to the 1. Faulty connections to5. Faulty ignition wires. starting battery. battery voltage regulator.6. Spark plugs are worn. 2. Faulty battery voltage regulator.7. High exhaust back-pressure. 3. Faulty bridge rectifier.8. Valve clearances are incorrect. 4. Faulty generator chargerEngine backfires. 1. Spark plug wires are connectedwindings.wrong. Blue exhaust smoke 1. Lube oil is diluted.2. Incorrect timing. discharge from the 2. High lube oil level.3. Engine is flooded. See Engine isengine.3. Crankcase breather hose is clogged.flooded under Engine cranks but4. Valves are worn or adjustedfails to start.incorrectly.4. Dirty flame arrester. 5. Piston rings are worn5. Cracked distributor cap. or unseated.6. High exhaust back·pressure. Black exhaust smoke 1. Dirty flame arrester.Engine overheats. 1. Coolant loss. Pressure test discharge from thecooling system.engine.2. Faulty carburetor.2. Faulty raw water pump impeller.Poor performance 1. Main jet clogged. Remove and clean.3. Belts are loose or broken.at generator speed. 2. Carburetor inlet filter clogged.4. Raw water pump worn.·Remove and clean.5. Faulty thermostat. 3. Fuel pump clogged. Remove andLow oil pressure. 1. Low oil level. replace.2. Wrong SAE type oil in the engine.4. Air intake filter screen dirty. Remove3. Wrong type oil filter.and clean.4. Relief valve is stuck.5. Faulty oil pump.6. Faulty engine bearings.~ WESTERBEKEEngines & Generators30