FUEL INJECTION SYSTEM TROUBLESHOOTING
SERVICE MANUAL NUMBER 23
Hard Start Symptom (Continued)
1.
2.
Check for proper operation of the TP
sensor.
Check or throttle linkage sticking,
binding or worn causing TP sensor
voltage to be higher than normal.
If a problem is found, repair as nec-
essary.
15
16
3.
Go to OBD
System
Check
Was a problem found?
-
-
Go to Step 16
1.
Check for proper operation of the
IAC valve.
•
Refer to Table A-8 in “General Sys-
tem Diagnostics” section.
2.
If a problem is found, repair as nec-
essary.
Go to OBD
System
Check
Was a problem found?
Go to Step 17
1.
Check or the following Engine
Mechanical problems:
•
•
•
Low compression.
Leaking cylinder head gaskets.
Worn or incorrect camshaft.
17
• Proper valve timing/valve train prob-
lem.
•
Restricted exhaust system.
2.
If a problem is found, repair as nec-
essary.
Go to OBD
System
Check
Was a problem found?
-
Go to Step 18
1.
Review all diagnostic procedures
within this table.
2.
If all procedures have been com-
pleted and no malfunctions have
been found, review/inspect the fol-
lowing:
•
•
•
Visual/physical inspection.
Scan tool data.
All electrical connections within a
suspected circuit and/or system.
18
Contact
MerCruiser
Customer
Service
3.
If a problem is found, repair as nec-
essary.
Go to OBD
System
Check
Was a problem found?
-
Index
Page 5D-10
90-861326--1 MARCH 1999
| 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...