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MerCruiser 5.7 MPI User Manual

MerCruiser 5.7 MPI
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Section 5 - Maintenance
90-864197072 NOVEMBER 2007 Page 61
1. Remove the PCV valve from the port valve cover.
mc71925-1
a
b
a - PCV valve b - Hose
2. Disconnect the PCV valve from the hose and discard the valve.
3. Install a new PCV valve in the valve cover and reconnect the hose.
4. Ensure that the PCV valve is tightly seated in the valve cover.
Water‑Separating Fuel Filter
!
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.
!
CAUTION
Failure to release pressure from the fuel system will result in fuel spraying out, which can
cause a fire or explosion. Allow the engine to cool completely and release all fuel pressure
before servicing any part of the fuel system. Always protect eyes and skin from
pressurized fuel and vapors.

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MerCruiser 5.7 MPI Specifications

General IconGeneral
Engine TypeV8
Fuel SystemMulti-Port Fuel Injection (MPI)
Horsepower300 HP
IgnitionElectronic
Cylinders8
Fuel TypeGasoline
Alternator65 amp
Compression Ratio9.4:1
Fuel Requirement87 octane (minimum)
Displacement5.7L (350 cu in)
Max RPM5000 RPM

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