PleasureCraft Engine Group 5.0L User Manual

5.0/5.7L Fuel Metering System 3A - 1
MEFI 4 - PCM
Marine Electronic Fuel Injection (MEFI)
Section 3A
Fuel Metering System - 5.0/5.7L
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 5.0/5.7L. 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 11
Fuel Injectors ................................................Page 13
Fuel Pressure Regulator Assembly .............. Page 14
Fuel Control Cell (FCC) ................................ Page 15
Low-Pressure Fuel Pump ............................. Page 18
Fuel Pump Relay ..........................................Page 18
Torque Specifi cations .......................................Page 19
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