G 14 Maintenancewc_tx001169gb.fm 596.12 TroubleshootingProblem Cause RemedyEngine is difficult to start 1. Fuel is contaminated2. Valve clearance isincorrect3. Engine oil is thick dueto cold weather4. Battery is discharged1. Clean fuel filter andfuel tank. Removewater, dirt, and otherimpurities.2. Check and adjustvalve clearance ifnecessary.3. Change grade of oilaccording to ambienttemperature.4. Charge or replacebattery.Engine does not start 1. Battery is discharged2. Alternator ismalfunctioning orconnections are loose3. A fuse has blown1. Charge or replacebattery.2. Check alternator orconnections. Repairas needed.3. Replace fuse.Engine power output islow1. Fuel injection systemis dirty or out ofadjustment2. Valve clearance isincorrect3. Air cleaner is dirty4. Engine is overheated1. Clean and/or adjustfuel injection system2. Check and adjustvalve clearance ifnecessary3. Clean air cleaner.4. Consult engineoperator’s manual.Engine stops 1. Fault condition hasoccurred2. Fuel tank is empty3. Fuel injection nozzleis dirty ormalfunctioning1. Identify and remedyfault condition.2. Add fuel.3. Clean or replace fuelinjection nozzle.Engine exhaust is blackand excessive 1. Fuel is of poor quality2. Fuel injection nozzleis dirty ormalfunctioning3. Combustion isincomplete1. Use only high-qualitydiesel fuel.2. Clean or replace fuelinjection nozzle.3. Consult engineoperator’s manual.