Kohler 4EOZ User Manual

TP-6137 5/03 39Section 7 Troubleshooting
Problem Possible Cause Corrective Action
Loses power (continued) Carbon build up. Clean the carbon from the cylinder head.
Improper cooling. Inspect the cooling system.
Fuel line restricted. Check the fuel lines.
Engine overloaded. Reduce the load.
Dirty fuel filter. Service the fuel filter.
Improper valve clearance. Contact your local Kohler generator set
distributor for service.
Dirty or faulty injectors. Contact your local Kohler generator set
distributor for service.
Incorrect fuel injection timing. Contact your local Kohler generator set
distributor for service.
Improper engine compression. Contact your local Kohler generator set
distributor for service.
Vent in fuel tank obstructed. Clean the cap in solvent; blow dry.
Overheats Improper cooling. Check the intake and outlet openings.
Check the raw water strainer.
Inoperative thermostat. Replace the thermostat.
Air intake clogged. Service the air intake screen.
Engine overloaded. Reduce the load.
Cooling system need flushing. Flush the cooling system.
Inoperative temperature switches. Replace shutdown switches.
Cooling water leaks from the water
passage.
Check the water passage.
Engine emits black or gray
exhaust smoke.
Incorrect fuel type. Use correct fuel.
Clogged or dirty air intake screen. Service the air intake screen.
Inoperative injection pump. Contact your local Kohler generator set
distributor for service.
Faulty injectors. Contact your local Kohler generator set
distributor for service.
Incorrect fuel injection timing. Contact your local Kohler generator set
distributor for service.
Incorrect valve clearance. Contact your local Kohler generator set
distributor for service.
Lube oil level too high. Drain out surplus.
Incorrect lube oil. Use correct viscosity oil.
Low lube oil pressure Low lube oil level. Add lube oil.
Incorrect lube oil viscosity. Drain; fill with correct lube oil.
Inoperative lube oil pump. Contact your local Kohler generator set
distributor for service.
Inoperative oil pressure switch. Replace the shutdown switch.
High lube oil consumption Too light viscosity oil. Use correct viscosity lube oil.
Oil leaks. Check for leaks in lines, around gasket,
and drain plug.
Incorrect oil type. Use correct viscosity lube oil.
Clogged breather system. Clean the breather system.
Inoperative piston ring, piston, cylinder
block, valve guide, and seat.
Contact your local Kohler generator set
distributor for service.

Kohler 4EOZ Specifications

General

Brand	Kohler
Model	4EOZ
Category	Marine Equipment
Language	English