Yanmar 1GM10C - Page 75

TROUBLESHOOTING
GM Series Operation Manual 69
12/05
Abnormal Exhaust Color:
•Black smoke
Engine is overloaded. Consult authorized Yanmar
Marine dealer or distributor.
—
Improper propeller
matching
Consult authorized Yanmar
Marine dealer or distributor.
—
Dirty intake silencer (air
cleaner)
Clean element. See Cleaning the
Intake Silencer (Air
Cleaner) on
page 62.
Improper fuel Replace with recommended
fuel.
See Diesel Fuel
Specifications on
page 26.
Faulty spraying of fuel
injector
Consult authorized Yanmar
Marine dealer or distributor.
—
Incorrect intake / exhaust
valve clearance
Consult authorized Yanmar
Marine dealer or distributor.
—
• White smoke
Improper fuel Replace with recommended
fuel.
See Diesel Fuel
Specifications on
page 26.
Faulty spraying of fuel
injector
Consult authorized Yanmar
Marine dealer or distributor. —
Fuel injection timing off Consult authorized Yanmar
Marine dealer or distributor. —
Engine burning oil
(excessive consumption)
Consult authorized Yanmar
Marine dealer or distributor. —
Symptom Probable Cause Measure Reference
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