MerCruiser 305 CID (5.0L) Service Manual page 602

SERVICE MANUAL NUMBER 24
Section 5F - Fuel Injection System Troubleshooting
Table of Contents
Scan Tool Normal Specifications (Idle / Warm
Engine / Closed Throttle / Neutral)
Important Preliminary Checks
Before Starting . . . . . . . . . . . . . . . . . . .
Visual / Physical Check
Intermittents . . . . . . . . . . . . . . . . . . . . . . . .
Hard Start Symptom . . . . . . . . . . . . . . . . .
Surges and/or Chuggles Symptom
Lack of Power, Sluggish or
Spongy Symptom . . . . . . . . . . . . . . . . . . .
Index
90-861327--1 OCTOBER 1999
FUEL SYSTEMS
. . . . 5F-2
. . . . . . . . . 5F-3
5F-3
. . . . . . . . . . . . 5F-3
5F-4
5F-5
. . . . 5F-7
5F-9
FUEL INJECTION SYSTEM TROUBLESHOOTING
Detonation / Spark Knock Symptom
Hesitation, Sag, Stumble Symptom
Cuts Out, Misses Symptom
Rough, Unstable, or Incorrect Idle,
Stalling Symptom . . . . . . . . . . . . . . . . . . .
Poor Fuel Economy Symptom
Dieseling, Run-On Symptom
Backfire Symptom . . . . . . . . . . . . . . . . . . .
. . . 5F-11
. . . . 5F-13
. . . . . . . . . . . 5F-15
5F-17
. . . . . . . . 5F-20
. . . . . . . . . . 5F-22
5F-23
Page 5F-1
5
F