Initial Starting/Priming Procedure ......................................................................................................................... 5B.2

Fuel Recommendations ................................................................................................................................... 5B.2-5B.3

EFI Fuel System Components ................................................................................................................................. 5B.3

Operation ................................................................................................................................................................... 5B.3

Important Service Notes .......................................................................................................................................... 5B.4

Electrical Components

Electronic Control Unit (ECU) ....................................................................................................................... 5B.4-5B.5

Engine Speed Sensor ....................................................................................................................................... 5B.5-5B.6

Throttle Position Sensor (TPS) and Initialization Procedures ................................................................... 5B.6-5B.9

Engine (Oil) Temperature Sensor ................................................................................................................ 5B.9-5B.10

Oxygen Sensor .............................................................................................................................................. 5B.10-5B.12

Electrical Relay ............................................................................................................................................. 5B.12-5B.13

Fuel Injectors ................................................................................................................................................ 5B.13-5B.16

Ignition System .......................................................................................................................................................5B.17

Spark Plugs ..............................................................................................................................................................5B.18

Wiring Harness .......................................................................................................................................................5B.18

Battery Charging System ....................................................................................................................................... 5B.18

Fuel Components

Fuel Pump ..................................................................................................................................................... 5B.18-5B.19

Fuel Pressure Regulator .............................................................................................................................. 5B.19-5B.21

Fuel Filter ................................................................................................................................................................. 5B.21

Fuel Rail ...................................................................................................................................................................5B.21

Fuel Line ........................................................................................................................................................ 5B.21-5B.22

Throttle Body/Intake Manifold Assembly .......................................................................................................... 5B.22

Idle Speed Adjustment (RPM) ................................................................................................................... 5B.22-5B.23

Initial Governor Adjustment ...................................................................................................................... 5B.23-5B.25

Troubleshooting

Troubleshooting Guide .......................................................................................................................................... 5B.25

Electrical System .......................................................................................................................................... 5B.25-5B.29

Fuel System ..............................................................................................................................................................5B.30

Fault Codes ................................................................................................................................................... 5B.30-5B.38

Troubleshooting Flow Chart ...................................................................................................................... 5B.38-5B.39

Flow Chart Diagnostic Aids ....................................................................................................................... 5B.40-5B.41

EFI Service Tools ............................................................................................................................... Refer to Section 2

Section 5B

Fuel System

Section 5B

EFI Fuel System

Page(s)

5B.1