FUEL INJECTION SYSTEM TROUBLESHOOTING SERVICE MANUAL NUMBER 23
Page 5D-8 90-861326--1 MARCH 1999
Hard Start Symptom
Step 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.
1
Was the “On-Board Diagnostic” (OBD)
System Check performed?
- Go to Step
2
Go to OBD
System Check
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?
- Go to Step
3
System nor-
mal
3
Was visual/physical check performed?
- Go to Step
4
Go to Visual/
Physical
Check
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.
Was a problem found?
-
Go to OBD
System
Check
Go to Step
5
5
1. Check for contaminated fuel.
2. Check water separating fuel filter.
3. If a problem is found, repair as nec-
essary.
Was a problem found?
-
Go to OBD
System
Check
Go to Step
6
6
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.
Was a problem found?
-
Go to OBD
System
Check
Go to Step
7
7
1. Check for proper ignition voltage
output.
•
Refer to
Table A-7 in “General Sys-
tem Diagnostics” section.
2. If a problem is found, repair as nec-
essary.
Was a problem found?
-
Go to OBD
System
Check
Go to Step
8
8
Is a scan tool being used?
-
Go to Step
10
Go to Step
9
Downloaded from https://needmanual.com/!
To Next Page
Loading...
Need help?
General