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DA7000 SERIES GENERATORS • OPERATION AND PARTS MANUAL — REV. #5 (01/20/11) — PAGE 57
Table 10. Engine Troubleshooting
SYMPTOM POSSIBLE PROBLEM SOLUTION
Engine does not start.
No fuel? Replenish fuel.
Air in the fuel system? Bleed system.
Water in the fuel system? Remove water from fuel tank.
Fuel pipe clogged? Clean fuel pipe.
Fuel fi lter clogged? Clean or change fuel fi lter.
Excessively high viscosity of fuel or
engine oil at low temperature?
Use the specifi ed fuel or engine oil.
Fuel with low cetane number? Use the specifi ed fuel.
Fuel leak due to loose injection pipe
retaining nut?
Tighten nut.
Incorrect injection timing? Adjust.
Fuel cam shaft worn? Replace.
Injection nozzle clogged? Clean injection nozzle.
Injection pump malfunctioning? Repair or replace.
Seizure of crankshaft, camshaft, piston,
cylinder liner or bearing?
Repair or replace.
Compression leak from cylinder?
Replace head gasket, tighten cylinder
head bolt, glow plug and nozzle holder.
Improper valve timing? Correct or replace timing gear.
Piston ring and liner worn? Replace.
Excessive valve clearance? Adjust.
Starter does not run.
Battery discharged? Charge battery.
Starter malfunctioning? Repair or replace.
Key switch malfunctioning? Repair or replace.
Wiring disconnected? Connect wiring.
TROUBLESHOOTING (ENGINE)