MerCruiser 3.0 MPI, Руководство пользователя

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Section 5 - Maintenance
Page 64 90-899883272 MARCH 2008
2. Remove the PCV valve.
a
b
32608
a - PCV valve
b - Crankcase ventilation hose return fitting
3. If inspecting the valve with the engine stopped:
a. Disconnect the PCV valve from the hose.
b. Shake the PCV valve. If you hear a metallic rattle, the valve is functional. If you
do not hear the rattle, replace the valve.
c. Install the valve onto the hose.
4. If inspecting the valve with the engine running:
a. Leave the hose connected to the PCV valve.
b. Start the engine. You may hear the sound of suction through the PCV valve.
c. Place a small sheet of card stock or heavy paper near the open end of the PCV
valve. If the valve is working, the crankcase pressure will suck the paper against
the open end of the valve.
d. Stop the engine. If the paper was not drawn onto the open end of the valve, check
the hose connection and for vacuum leaks in the hose. If no leaks are present,
replace the PCV valve.
5. Clean the crankcase ventilation hose with warm, soapy water. Dry with compressed
air or allow to air dry completely.
6. Inspect the crankcase ventilation hose for cracks or deterioration. Replace if necessary.
7. Install the PCV valve in the valve cover and reconnect the hose to the valve and the
return fitting.
8. Seat the PCV valve tightly in the valve cover.
9. Replace the engine information plate.
Cleaning the IAC Muffler
!
WARNING
Fuel is flammable and explosive. Ensure the key switch is off and the lanyard is positioned
so that the engine cannot start. Do not smoke or allow sources of spark or open flame in
the area while servicing. Keep the work area well ventilated and avoid prolonged
exposure to vapors. Always check for leaks before attempting to start the engine and
wipe up any spilled fuel immediately.
1. Locate the idle air control valve (IAC) on the rear of the engine's port side.