Marinediesel 5L V8, Руководство пользователя, Страница: 158 / 248

156
NOTE: Items underlined are the most likely cause of the condition.
ENGINE MISFIRES
PROBLEM CORRECTION/FURTHER DIAGNOSIS
ƒ
Incorrect low/fast idle speeds
ƒ
Incorrect injection pump static timing
ƒ
Incorrect fuel supply to injection pump (air
in fuel)
ƒ
Incorrect fuel return from injection pump
ƒ
Incorrect automatic advance mechanism
operation
ƒ
Leaking fuel injection lines
ƒ
Faulty fuel injection nozzles
ƒ
Consult your dealer service manager.
ƒ
Consult your dealer service manager.
ƒ
Check line connections at fuel/water
separator and fuel pump; tighten, if
necessary.
ƒ
Check fuel return line on top of injector
pump for restrictions or debris.
ƒ
Consult your dealer service manager.
ƒ
Tighten, repair of replace leaking lines.
ƒ
Consult your dealer service manager.
ENGINE SPEED FLUCTUATES
PROBLEM CORRECTION/FURTHER DIAGNOSIS
ƒ
Incorrect fuel quality (water in fuel)
ƒ
Incorrect fuel supply to injection pump
ƒ
Internal injection pump fault (sticking
governor linkage
ƒ
Inspect and clean fuel tank, if needed.
ƒ
Check fuel line connections at fuel/water
separator and fuel pump; tighten, if
necessary. Air in fuel is normally the cause.
ƒ
Consult your dealer service manager.
POOR ACCELERATION
PROBLEM CORRECTION/FURTHER DIAGNOSIS
ƒ
Incorrect fuel quality (heating
energy/purity)
ƒ
Incorrect oil level (high/low) and quality
(grade/viscosity/purity)
ƒ
Check specific gravity of fuel (Use fuel
quality hydrometer). Inspect and clean fuel
tank, if needed.
ƒ
Remove or add oil to correct level. Drain
and refill crankcase, if needed.