Multiquip DA7000WGH Engine Troubleshooting Continued, Troubleshooting Engine, Symptom, Solution

TROUBLESHOOTING (ENGINE)

Table 10. Engine Troubleshooting (Continued)

SYMPTOM	POSSIBLE PROBLEM	SOLUTION
	Fuel filter clogged or dirty?	Clean or change.
	Air cleaner clogged?	Clean or change.
	Fuel leak due to loose injection pipe retaining	Tighten nut.
	nut?
Engine revolution is not
	Injection pump malfunctioning?	Repair or replace.
smooth
	Incorrect nozzle opening pressure?	Adjust.
	Injection nozzle stuck or clogged?	Repair or replace.
	Fuel over flow pipe clogged?	Clean.
	Governor malfunctioning?	Repair.
	Excessive engine oil?	Reduce to the specified level.
Either white or	Piston ring and liner worn or stuck?	Repair or replace.
blue exhaust gas is
	Incorrect injection timing?	Adjust.
observed.
	Deficient compression?	Adjust top clearance.
	Overload?	Lessen the load.
Either black or dark	Low grade fuel used?	Use the specified fuel.
gray exhaust gas is	Fuel filter clogged?	Clean or change.
observed.
	Air cleaner clogged?	Clean or change.
	Deficient nozzle injection?	Repair or replace the nozzle.
	Incorrect injection timing?	Adjust.
	Engine's moving parts seem to be seizing?	Repair or replace.
Deficient output.	Uneven fuel injection?	Repair or replace the injection pump.
	Deficient nozzle injection?	Repair or replace the nozzle.
	Compression leak?	Replace head gasket, tighten cylinder head
		bolt, glow plug and nozzle holder.

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