Multiquip manual MQ41TDH Troubleshooting Engine, Engine Troubleshooting

MQ41TDH — TROUBLESHOOTING (ENGINE)

TABLE 5 ENGINE TROUBLESHOOTING

SYMPTON	POSSIBLE PROBLEM	SOLUTION
	Speed control lever is in "STOP" position?	Set speed control lever to "START" position.
	STOP solenoid is in the "STOP" position?	Set stop solenoid to the "START" position.
		Adjust and lubricate if necessary.
	No Fuel reaching injection pump?	Add fuel. Check entire fuel system.
	Defective fuel pump?	Replace fuel pump.
	Fuel filter clogged?	Replace fuel filter and clean tank.
Engine will not start or start is	Faulty fuel supply line?	Replace or repair fuel line.
delayed, although engine can be
		Check piston, cylinder and valves. Adjust or
turned over.	Compression too low?
		repair per engine repair manual.
	Fuel injector not working correctly?	Repair or replace injector in accordance with
		engine repair manual.
	Oil pressure too low?	Check engine oil pressure.
	Low starting temperature limit exceeded	Comply with cold starting instructions and
		proper oil viscosity.
	Defective battery?	Charge or replace battery.
		Check whether clear (not turbid) fuel emerges
	Fuel separates has inadequate resistance to	from the fuel line (detach from injection pump).
		If the fuel is turbid or separated, warm up the
	low temperatures?
		engine or drain the complete fuel supply
At low temperatures engine will
		system. Refuel with winter grade diesel fuel.
not start.
	Engine oil too thick?	Refill engine crankcase with correct type of oil
		for winter environment.
	Defective battery?	Replace battery.
	Throttle lever in STOP position?	Reposition throttle lever to RUN position.
Engine fires but stops soon as	Fuel filter blocked?	Replace fuel filter.
starter is switched off.	Fuel supply blocked?	Check the entire fuel system.
	Electrical problem at fuel solenoid?	Repair using #7 wire.
	Fuel tank empty?	Add fuel.
	Fuel filter blocked?	Replace fuel filter.
Engine stops by itself during
	Defective fuel pump?	Replace fuel pump.
normal operation.
	Mechanical oil pressure shutdown sensor stops	Add oil. Replace low oil shutdown sensor if
	the engine due to low oil?	necessary.

MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 25