FUEL INJECTION SYSTEM TROUBLESHOOTING
Hard Start Symptom
Step
SERVICE MANUAL NUMBER 23
Action
Value(s)
Yes
No
Definition: Engine cranks OK, but does not start for a long time. Does eventually run, or
may start but immediately dies.
Was the “On-Board Diagnostic” (OBD)
System Check performed?
Go to OBD
Go to Step 2 System Check
1
2
-
Check to see if the driver is using the
correct starting procedure as described
in the owners manual. Educate the
driver if they do not know.
Does the driver know the correct start-
ing procedure?
System nor-
mal
-
-
Go to Step 3
Go to Step 4
Was visual/physical check performed?
Go to Visual/
Physical
Check
3
4
1.
Check for proper operation of fuel
pump relay circuit.
Refer to Table A-5 in “General Sys-
tem Diagnostics” section.
•
2.
If a problem is found, repair as nec-
essary.
Go to OBD
System
Was a problem found?
-
-
Check
Go to Step 5
Go to Step 6
1.
2.
Check for contaminated fuel.
Check water separating fuel filter.
5
6
3. If a problem is found, repair as nec-
essary.
Was a problem found?
Go to OBD
System
Check
1.
•
Check for proper fuel pressure.
Refer to Table A-4 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 7
1.
Check for proper ignition voltage
output.
•
Refer to Table A-7 in “General Sys-
tem Diagnostics” section.
7
8
2.
If a problem is found, repair as nec-
essary.
Go to OBD
System
Check
Was a problem found?
-
-
Go to Step 8
Go to Step 9
Is a scan tool being used?
Go to Step
10
Index
Page 5D-8
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...