P E R F O R M A N C E D I A G N O S T I C S
89
CUSTOMER NAME
F-Series/Excursion Powerstroke
2003.25
MODEL YEAR
VEHICLE SERIAL N0.(VIN)
6.0L Power Stroke Diesel Engine Diagnostic Guide
CHASSIS STYLE
Customer Concerns
(Please list in this box)
DEALER NAME
1863 CLAIM NUMBER
DATE
ENGINE SERIAL NUMBER
ODOMETER
TYPE OF SERVICE
VEHICLE GVW
TRANSMISSION
AMBIENT TEMPERATURE
PERSONAL
COMMERCIAL
P & A
CODE
-NOTE-
IF CONCERN IS FOUND, SERVICE AS
REQUIRED. IF THIS CORRECTS THE
CONDITION, IT IS NOT NECESSARY TO
COMPLETE THE REMAINDER OF THE
DIAGNOSTIC PROCEDURE.
1. Visual Engine/Chassis Inspection
8. EGR Position
12a. Low Idle Stability (ICP Pressure)
•
Verify that there are no fluid or pressure leaks.
•
Perform with key on, engine off.
•
Check at low idle, EOT above 70° C (170° F)
•
Inspect all wire connections for damage.
•
Use scan tool to command Output State Control for EGR.
•
Monitor ICP and RPM with scan tool.
•
Inspect MAP hose,intercooler hose,and manifolds for leaks.
•
Monitor EGR position sensor PID and calculate travel..
Parameter
Spec. @ 670 RPM
Measurement
Fuel Oil Coolant Electrical Hoses Leaks
Instrument
Spec. Percent
Actual Percent
ICP
4.5-5.5 Mpa + .3MPa
Method
Check
Scan tool
0% (0.6-1.2 V)
(650-800 PSI + 45 PSI)
Visual
Closed
_______ Closed
Take reading before disconnecting ICP
If engine RPM is unstable, disconnect ICP sensor (ICP will default).
2. Sufficient Clean Fuel
90 % - 100%
»
If RPM is still unstable, re-connect sensor and go to 12b.
•
Check if WATER IN FUEL indicator has been illuminated.
(4.0-4.52 V)
_______ Open
»
If RPM smoothes out, the ICP sensor is at fault.
•
Drain sample from fuel control module housing.
Open
12b. Injection Pressure Regulator Test
•
Cetane rating between 40-50 is recommended for
•
Check at low idle, EOT above 70° C (170° F)
optimum performance
90 % and 3.2 V
_______ Travel
•
Monitor IPR with scan tool.
Travel
Parameter
Spec. @ 670 RPM
Measurement
Method
Check
»
Repair issue causing out of spec. values before continuing.
IPR
30 % MAX
Visual
9. Exhaust Restriction
»
If duty cycle is below MAX spec go to next step.
•
Visually inspect exhaust system for damage
»
If duty cycle is above MAX spec, check for system leak with
3. Check Engine Oil Level
•
Monitor EP with the scan tool with the engine temperature
procedure in Hard Start/No Start section. Test 10c.
•
Check for contaminants (fuel, coolant).
at 70° C (170° F)minimum at 3,800 RPM in park/neutral.
13. Boost Pressure Test
•
Correct Grade/Viscosity.
Parameter
Spec.
Measurement
•
Carefully inspect intercooler tubes/connections, turbocharger
•
Miles/hours on oil, correct level.
EP
234 kPa (34 PSI)
connections, and MAP hose for signs of damage or leaks.
Method
Check
MAX '@ 3800 RPM
•
Perform boost test at 3300 RPM.
Visual
10a. Electric Fuel Pump Pressure
•
Monitor MGP and RPM with scan tool.
•
Measure fuel pressure at engine filter housing test port.
•
Road Test - select appropriate gear to obtain desired engine
4. Perform KOEO On Demand Test
•
Road Test- engine at full load condition
speed and full load on engine climbing hill or loaded truck..
•
Use the scan tool.
Instrument
Spec. Measurement
•
DTCs set during this test are current faults.
0-1.1 Mpa
310-379 kPa
3300 RPM
Diagnostic
(0-160 PSI)
(45-55 PSI) min.
Parameter
Spec. PSI G
Measurement
Trouble Codes
Gauge
MGP
22 PSIG MIN
5. Retrieve Continuous DTC's
»
If fuel pressure fails low, Go to step10b.
»
If test fails low, inspect turbo blades for damage.
•
Use the scan tool.
»
If pressure is above spec, check fuel return lines for restriction.
•
DTCs retrieved during this test are historical faults.
If no restriction is present, replace fuel pressure regulator valve.
14. Crankcase Pressure Test
Diagnostic
10b. Electric Fuel Pump Inlet Restriction
•
Measure at oil fill tube with 6.0L Crankcase Pressure Tester
Trouble Codes
•
Measure restriction at fuel pump inlet.
p/n 303-758, with engine at 70° C (170° F) minimum.
6. KOEO Injector Electrical Self-Test
Instrument
Spec. Measurement
•
Block breather tube on left valve cover.
•
Use the scan tool.
0-30 " Hg
6" Hg MAX
•
Measure at WOT with no load at 3,000 RPM.
•
All injectors will momentarily click, then individual
vacuum
Instrument
Spec. Measurement
injectors will click in sequence 1 though 8.
»
If > 6" Hg restriction, check lines between pump and fuel tank.
(0-60" H²0)
8" H²0 MAX
Injector
»
If < 6" Hg, inspect both fuel filters. If filters are OK, check fuel
Magnehelic
Trouble Codes
regulator. If regulator and filters are OK, replace fuel pump.
If more than 8 " H²0, refer to base engine in Shop Manual
»
If self test codes are retrieved, go to appropriate PPT.
10c. Fuel Aeration Test
15. Oil Aeration Test
7. Intake Restriction
•
Install clear hose on fuel return line at fuel control module.
•
Run engine at 3000 RPM for 1 minute.
•
Check filter minder switch/indicator.
Refer to shop manual for approved procedure.
•
Take oil sample from the Oil Pressure Switch port at idle.
•
Measure vacuum on clean side of air inlet system
•
Run at WOT for 2 min. Return fuel should be free of bubbles.
•
Inspect sample for presence of air bubbles.
at WOT with magnehelic gauge.
Method
Check
Method
Check
Instrument
Spec.
Check
Visual
Visual
Magnehelic/
»
If air is present in return fuel, inspect fuel system for leaks.
Filter Minder
2"-25" H²0
11. Perform KOER On Demand Test
»
Excessive oil aeration can be caused by depleated oil additives,
•
This will test the ICP, EGR and VGT performance.
pick-up tube leak, front cover seal leak, or upper pan seal leak.
KOER
Note: If performance concern still exists, refer to Enhanced Injector
DTC
Diagnostics in this section.
Summary of Contents for 6.0L POWER STROKE
Page 1: ... F Series Super Duty ...
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Page 6: ...1 Direct Injection Turbocharged Diesel Engine 6 0L Power Stroke ...
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Page 91: ...W I R I N G D I A G R A M S I N G L E A LT 90 ...
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Page 104: ...N O T E S 103 ...
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Page 106: ...2002 International Truck and Engine Corporation Printed in the U S A ...