Mercury MerCruiser MIE 8.2L MPI - Fuel System

5
D
SERVICE MANUAL NUMBER 23
FUEL INJECTION SYSTEM TROUBLESHOOTING
Page 5D-1
90-861326--1 MARCH 1999
FUEL SYSTEM
Section 5D - Fuel Injection System Troubleshooting
Table of Contents
Troubleshooting 5D-2. . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Codes for the
MEFI 1 454 / 502 Mag MPI and
8.2L MPI Engines 5D-2. . . . . . . . . . . . . . .
Diagnostic Trouble Codes for the
MEFI 2 7.4L MPI Engines 5D-2. . . . . . . .
Diagnostic Trouble Codes for the
MEFI 3 454 cid (7.4L)/502 cid
(8.2L) Engines 5D-3. . . . . . . . . . . . . . . . . .
Scan Tool Normal Specifications (Idle /
Warm Engine / Closed Throttle /
Neutral) 5D-5. . . . . . . . . . . . . . . . . . . . . . . .
Important Preliminary Checks 5D-6. . . . . .
Visual/Physical Check 5D-6. . . . . . . . . . . . .
Hard Start Symptom 5D-8. . . . . . . . . . . . . .
Surges and/or Chuggles Symptom 5D-11. .
Lack of Power, Sluggish or Spongy
Symptom 5D-13. . . . . . . . . . . . . . . . . . . . . . .
Detonation/Spark Knock Symptom 5D-16. .
Hesitation, Sag, Stumble Symptom 5D-19.
Cuts Out, Misses Symptom 5D-21. . . . . . . .
Rough, Unstable, or Incorrect Idle,
Stalling Symptom 5D-23. . . . . . . . . . . . . . . .
Poor Fuel Economy Symptom 5D-27. . . . . .
Dieseling, Run-On Symptom 5D-29. . . . . . .
Backfire Symptom 5D-30. . . . . . . . . . . . . . . .
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Index