PleasureCraft Engine Group 5.0L User Manual

6.0L Fuel Metering System 3B - 1
MEFI 4 - PCM
Marine Electronic Fuel Injection (MEFI)
Section 3B
Fuel Metering System - 6.0L
This section describes how the fuel metering system operates, and provides a description of components used on the
Marine Electronic Fuel Injection equipped engines. The fuel metering system information described in this section is
limited to the 6.0L. All other systems will be detailed in a separate section.
Contents
On-Board Service .................................................Page 6
Fuel Control On-Board Service .......................Page 7
Fuel Pressure Relief Procedure.......................Page 7
Flame Arrestor .................................................Page 7
Throttle Body Assembly...................................Page 8
Quick Connect Fitting(s) Service
(Metal Collar) ...................................................Page 9
Fuel Rail Assembly........................................Page 12
Fuel Injectors .................................................Page 15
Fuel Control Cell (FCC) .................................Page 17
Fuel Pressure Regulator................................Page 19
Low-Pressure Fuel Pump ..............................Page 21
Fuel Pump Relay ...........................................Page 21
Torque Specifi cations ........................................Page 22
General Description .............................................Page 2
Purpose............................................................Page 2
Modes of Operation .........................................Page 2
Starting Mode............................................Page 2
Clear Flood Mode......................................Page 2
Run Mode..................................................Page 2
Acceleration Mode.....................................Page 2
Fuel Cutoff Mode.......................................Page 2
Power Reduction Mode .............................Page 2
Fuel Metering System Components ................Page 2
Quick-Connect Fittings.....................................Page 2
Fuel Supply Components (FCC System) .......Page 3
Fuel Pump Electrical Circuit ............................Page 4
Fuel Rail Assembly..........................................Page 4
Fuel Injectors.............................................Page 4
Pressure Regulator Assembly...................Page 5
Throttle Body Assembly...................................Page 5
Idle Air Control (IAC) Valve........................Page 6
Diagnosis ..............................................................Page 6

PleasureCraft Engine Group 5.0L Specifications

General

Brand	PleasureCraft Engine Group
Model	5.0L
Category	Engine
Language	English