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5.0/5.7L Distributor Ignition 4A - 1

MEFI 4 - PCM

Marine Electronic Fuel Injection (MEFI 4)

Section 4A

Distributor Ignition (DI)

This section will describe the Distributor Ignition (DI) System used on the 5.0L and the 5.7L engines. The DI system

uses a single ignition coil and a mechanical distributor. The section explains the individual components of the Distributor

Ignition System. Electronic Ignition System is explained in Section 4B.

Contents

Ignition System Speciﬁ cations .............................. Page 2

Fastener Tightening Speciﬁ cations ....................... Page 2

Distributor Ignition (DI) System Description .......... Page 3

Ignition System Overview ............................... Page 3

Crankshaft Position (CKP) Sensor and Reluctor

Wheel..............................................................Page 3

Camshaft Position (CMP) Sensor and Reluctor

Wheel..............................................................Page 4

Ignition Coil ..................................................... Page 4

Noteworthy Ignition Information ...................... Page 5

Engine Control Module (ECM) .............................. Page 3

Knock Sensor (KS) System Description................ Page 6

Purpose........................................................... Page 6

Operation ........................................................ Page 6

Normal Knock Signal ...................................... Page 6

Abnormal Knock Signal ..................................Page 6

Ignition Coil Replacement ......................................Page 7

Spark Plug Wire Replacement ...............................Page 7

Spark Plug Wire Inspection .............................Page 8

Spark Plug Replacement .......................................Page 9

Spark Plug Usage............................................Page 9

Spark Plug Inspection......................................Page 9

Spark Plug Visual Inspection.........................Page 11

Crankshaft Position (CKP) Sensor

Replacement ........................................................Page 13

Camshaft Position (CMP) Sensor

Replacement ........................................................Page 14

Setting Cam Retard..............................................Page 15

Knock Sensor (KS) Replacement ........................Page 16

PleasureCraft Engine Group 5.0L User Manual

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