68
OM-C3 11/21
ENGINE
PROBLEM
POSSIBLE CAUSE
RECOMMENDATION(S)
Lack of Power (cont.)
Low Oil Pressure
High Oil Consumption
Engine Emits White
Smoke
Engine Emits Black or
Gray Exhaust Smoke
Leaking exhaust manifold gasket
Defective aneroid control line
Restricted fuel hose
Low fast idle speed
Damaged propeller
Marine growth
Low oil level
Improper type of oil
Crankcase oil too late
Oil leaks
Restricted crankcase vent tube
Defective turbocharger
(if equipped)
Improper type of fuel
Low engine temperature
Defective thermostat
Defective injection nozzles
Engine out of time
Improper type of fuel
Clogged or dirty air cleaner
Engine overloaded
Fuel injectors dirty
Consult Authorized Dealer
Consult Authorized Dealer
Clean or replace fuel hose
Consult Authorized Dealer
Have propeller checked
Clean hull
Add oil
Drain, fill crankcase with oil of proper viscosity
and quality
Use proper viscosity oil
Check for leaks in lines, gaskets, and drain plug
Clean vent tube
Consult Authorized Dealer
Use proper fuel
Warm up engine to normal operating
temperature
Remove and check thermostat
Consult Authorized Dealer
Consult Authorized Dealer
Use proper fuel
Service air cleaner
Reduce load
Use Northern Lights approved biodiesel or
diesel fuel conditioners containing detergents.
If no improvement is seen, consult authorized
dealer.
Troubleshooting
