Fuel System - Operation and Tests/Fuel Injection Nozzles CTM3274 (01JUL99) 220-24 Saran Liter Engines 060799 PN=363 DIAGNOSING FUEL SYSTEM MALFUNCTIONS Fuel not reaching fuel injection nozzles Poor engine idling Fuel filter clogged Air in fuel system Fuel line clogged or restricted Fuel injection nozzles dirty or faulty Fuel transfer pump pressure too low Incorrect timing Air in fuel system Automatic advance of fuel injection pump faulty or not Fuel return line restricted operating Loss of fuel through leakage Fuel lines clogged or restricted Water in fuel Engine hard to start or won’t start Fuel injection pump return line restricted Fuel injection nozzle leak-off line clogged Water, dirt or air in fuel system Fuel filter clogged Lack of engine power Shut-off knob stuck Fuel lines clogged or restricted Air cleaner restricted Fuel injection nozzles dirty or faulty Incorrect timing Fuel injection pump faulty Automatic advance of fuel injection pump faulty or not Fuel transfer pump faulty operating Incorrect timing Fuel filter clogged Fuel injection pump metering valve stuck in closed Fuel injection nozzle leak-off line clogged position (check speed-control linkage) Fuel injection nozzles faulty or nozzle valve sticking Fuel injection pump return line restricted Engine starts and stops Fuel injection pump housing is not full of fuel Water in fuel Water in fuel Speed control linkage incorrectly adjusted Filter clogged Air in fuel system Engine emits black or grey smoke Fuel lines clogged or restricted Fuel injection pump return line damaged Fuel injection nozzles faulty or nozzle valves sticking Incorrect timing Engine runs irregularly or stalls frequently Automatic advance of fuel injection pump faulty or not operating Filter clogged Air cleaner element clogged or dirty Air in fuel system Fuel injection nozzles faulty or dirty Engine emits blue or white smoke Fuel lines clogged or restricted Incorrect timing Cranking speed too low Water in fuel Incorrect timing Fuel injection pump return line restricted Automatic advance of injection pump faulty or not Fuel injection nozzle leak-off line clogged operating Injection nozzles faulty or nozzle valves sticking Excessive wear in liners and/or stuck piston rings Engine does not get hot Excessive wear in valve guides CD,3274,G220,12-19-15MAY92 220 24