SERVICE MANUAL NUMBER 23
Dieseling, Run-On Symptom
Step
FUEL INJECTION SYSTEM TROUBLESHOOTING
Action
Value(s)
Yes
No
Definition: Engine continues to run after key is turned “OFF,” but runs very rough. If
engine runs smooth, check ignition switch and adjustment.
Was the “On-Board Diagnostic” (OBD)
System Check performed?
Go to OBD
1
-
-
Go to Step 2 System Check
Was visual/physical check performed?
Go to Visual/
Physical
Check
2
Go to Step 3
1.
•
Check for leaking fuel injectors.
Refer to Table A-4 in “General Sys-
tem Diagnostics” section.
3
4
2.
If a problem is found, repair as nec-
essary.
Go to OBD
System
Check
Was a problem found?
-
-
Go to Step 4
Go to Step 5
1.
Check for proper operation of Igni-
tion Control (IC) circuit and the
Knock Sensor (KS) circuit.
If a problem is found, repair as nec-
essary.
2.
Go to OBD
System
Check
Was a problem found?
1.
Check for obvious overheating
problems:
•
•
Loose water pump belt.
Faulty or incorrect water pump.
5
• Restriction in cooling system.
•
Faulty or incorrect thermostat.
2.
If a problem is found, repair as nec-
essary.
Go to OBD
System
Check
Was a problem found?
-
-
Go to Step 6
1.
Check for proper operation of the
EFI system relay.
Refer to Table A-6 in “General Sys-
tem Diagnostics” section.
If a problem is found, repair as nec-
essary.
•
6
2.
Go to OBD
System
Check
Was a problem found?
Go to Step 7
Index
90-861326--1 MARCH 1999
Page 5D-29
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 454 CID, Mercury MerCruiser 502 CID |
| Model Year | 1998, 1999, 2000, 2001 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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Marine readers have rated Mercury MerCruiser GM V8 GM V8 454 CID 7.4L and 502 cid 8.2L Marine Engines Service Manual Number 23 5.0 out of 5.0 based on 1 product reviews. Just need the manual. Wrote review. Can't technically review what I haven't seen yet...