FUEL INJECTION SYSTEM TROUBLESHOOTING
SERVICE MANUAL NUMBER 23
Poor Fuel Economy Symptom (Continued)
1.
Visual (physically) check vacuum
hoses for splits, kinks and improper
connections and routing.
8
9
2.
If a problem is found, repair as nec-
essary.
Go to OBD
System
Check
Was a repair required?
-
-
Go to Step 9
Go to Step 10
1.
Check engine compression for
being low.
2. If a problem is found, repair as nec-
essary.
Was a problem found?
Go to OBD
System
Check
1.
2.
3.
Check exhaust system for possible
restriction.
Inspect exhaust system for dam-
aged or collapsed pipes.
If a problem is found, repair as nec-
essary.
10
11
Go to OBD
System
Check
Was a problem found?
-
Go to Step 11
1.
Check for excessive resistance on
the bottom of the boat such as dirt,
barnacles, etc.
Check for proper propeller size and
pitch for that application.
If a problem is found, repair as nec-
essary.
2.
3.
Go to OBD
System
Check
Was a problem found?
-
Go to Step 12
1.
Review all diagnostic procedures
within this table.
2.
When all procedures have been
completed and no malfunctions are
found, review/inspect the following:
Visual/physical inspection.
Scan tool data.
All connections within a suspected
circuit and/or system.
•
•
•
12
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-28
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 |
(1 votes, average: 5 out of 5)
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...