NHTSA ID Number: 10235626
Manufacturer Communication Number: 18SP747REV2
TSB/Document Date: 2023-05-05
Summary
Detroit Special Publication for Detroi Fuel Injector Cleaning Machine. The Fuel Injector Cleaning Machine (FICM) is used to clean deposits from fuel injectors and test fuel injector performance.
(1) at the fuel rail (see below graphic). Torque to 40 N·m (30 lb·ft).
11. Install the FICM fuel rail block off fitting onto the high pressure fuel rail supply line’s rear connection
point (2) at the fuel rail (see above graphic). Torque to 40 N·m (30 lb·ft).
12. Install the FICM fuel return fitting onto the needle return line (3) (see above graphic). Torque to 10
N·m (7 lb·ft).
13. Connect the supply line from the FICM to the high pressure fuel rail, supply fitting (1) (see above
graphic).
14. Connect the return line from the FICM to the fuel return fitting (3) (see above graphic).
15. Connect the FICM wiring harness to fuel injector wiring harness connectors at the camshaft housing.
16. Stir the injector cleaning fluid and then fill the FICM supply tank with at least one gallon of injector
cleaning fluid. Injector cleaning fluid can turn yellow after being opened, which is a normal condition.
17. Turn Injector Power (4) and Pump Power (5) switches to the OFF position (see below graphic).
-8-
Gen 5 Engines – High Pressure Fuel Line Fittings
18. Connect 110 AC volts power supply to the FICM.
19. Turn the Pump Power switch (5) to the ON position (see above graphic).
20. Turn the fuel injector to be cleaned (8) to the ON position (see above graphic). All other injectors
should be turned off.
21. Turn the Injector Power (4) switch to the 20 Second position (see above graphic).
22. Turn the 20 Second Timer Start (3) switch to the RUN position (see above graphic).
23. Monitor the pressure on the FICM gauge (1) (see above graphic). The pressure should bleed down
during the 20 second process. A fuel injector pressure stuck at 2062 kPa (200 psi), after a fourth
cleaning cycle, indicates the tested fuel injector has failed. Do not replace the fuel injector at this time.
24. Once fuel injector cleaning begins for the chosen fuel injector, the injector switch (8) illuminates. The
injector switch turns off (see above graphic) after cleaning is complete. After the injector light has
turned off, turn the injector switch (8) off (see above graphic).
25. Repeat steps 20 through 24 to clean the remaining fuel injectors. Clean each fuel injector four times.
The Cycle Counter (6) tracks of the number of cleaning cycles completed. After all fuel injectors have
been cleaned four times, reset the cycle counter (7) (see above graphic).
26. Push the round red button (2) on FICM to remove all pressure from the system (see above graphic).
27. Replace any fuel injectors that failed testing in step 23. Refer to workshop manual section “Removal
of the Fuel Injector”. Continue to step 28 after injector replacement.
28. Using a fuel line socket, loosen all six high pressure fuel injector lines at the fuel rail only. Allow the
cleaning fluid to drain from the high pressure fuel injector lines. Once all lines have drained, torque the
fuel injector line nut to 40 N·m (30 lb·ft).
29. Disconnect the FICM supply line from the fuel rail supply fitting.
30. Connect a Detroit™ approved fuel primer to the fuel rail supply fitting at the fuel rail.
31. Using the fuel primer, pressurize the fuel rail to 655 kPa (95psi).
32. Turn the fuel injector to be cleaned (8) to the ON position (see above graphic). This will clean the fuel
injectors with fuel. All other fuel injectors should be turned off.
33. Turn the Injector Power (4) switch to the 20 Second position (see above graphic).
-9-
Gen 5 Engines – High Pressure Fuel Line Fittings
34. Turn the 20 Second Timer Start (3) switch to the RUN position (see above graphic).
35. Once fuel injector cleaning begins for the chosen fuel injector, the injector switch (8) illuminates. The
injector switch turns off (see above graphic) after cleaning is complete. After the injector light has
turned off, turn the injector switch (8) off (see above graphic).
36. Repeat steps 32 through 35 to clean the remaining fuel injectors with diesel fuel.
37. Push the round red button (2) on FICM to remove all pressure from the system (see above graphic).
38. Turn the fuel priming tool off, and turn Injector Power (4) and Pump Power (5) switches to the OFF
position (see above graphic).
39. Disconnect the FICM wiring harness from the fuel injector wiring harness connectors.
40. Disconnect the fuel primer from the fuel rail supply fitting and the FICM return line from the needle
return line.
41. Remove the FICM fuel return fitting from the needle return line.
42. Remove the FICM fuel rail supply fitting from the fuel rail.
43. Remove the FICM fuel rail block off fitting from the fuel rail.
44. Connect the engine wiring harness to the fuel injector wiring harness connectors.
45. Remove the bolt retaining the amplifier and needle return line to the cylinder head.
46. Install the needle return line onto the fuel filter module and the cylinder head. Torque to 30 N·m (22
lb·ft).
47. Install the triple-clip bolt retaining the needle, amplifier and pressure limiting valve lines. Torque to 14
N·m (11 lb·ft).
48. Install new high pressure fuel rail supply lines and prime the fuel system. Refer to workshop manual
section “Installation of the High Pressure Fuel Rail Supply Lines” (single use part).
49. Using a Detroit™ approved fuel primer, prime the fuel system. Refer to workshop manual section
“Priming The Fuel System”.
50. Use DiagnosticLink® to perform the FICM Routine (or run the engine at 1200 RPM for 10 minutes).
51. Install the front bumper. Refer to OEM procedures.
52. Close the hood.
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GHG17/GHG14/EPA10/EPA07 Engines – Fuel Rail Fittings
Testing and Cleaning GHG17/GHG14/EPA10/EPA07 Engine Fuel Injectors Using
Updated Fuel Rail Fittings
FICM Fittings Used in the Procedure
Tool Number
DKI001E21003-27
Tool Name
Tool Graphic
FICM Fuel Rail Supply Fitting
DKI001E21003-7 (GHG17,GHG14, EPA10)
FICM Fuel Return Fitting
DSN001E21003-1 (EPA07)
Table 6
Test and Clean as follows:
1. Turn ignition OFF, apply parking brake, chock wheels, and perform any other applicable safety steps.
2. Open the hood
3. Remove the bumper. Refer to Original Equipment Manufacturer (OEM) procedures
4. Loosen the pressure limiting valve (2) (see above graphic). Allow the fuel to drain from the fuel rail.
Once the fuel has drained, torque the pressure limiting valve to 100 N·m (74 lb·ft).
5. Remove the needle return line (3) from the fuel filter module and position aside (see above graphic).
Leave the line connected to the cylinder head.
6. Disconnect the engine wiring harness from the fuel injector wiring harness connectors.
- 11 -
GHG17/GHG14/EPA10/EPA07 Engines – Fuel Rail Fittings
7. Remove the fuel rail pressure sensor (1) (see above graphic).
8. Install the Fuel Injector Cleaning Machine (FICM) fuel rail supply fitting onto the fuel rail pressure
sensor connection point at the fuel rail (1) (see above graphic). Torque to 40 N·m (30 lb·ft).
9. Install the FICM fuel return fitting onto the needle return line (4) (see above graphic).
10. Connect the supply line from the FICM to the fuel rail, supply fitting (1) (see above graphic).
11. Connect the return line from the FICM to the fuel return fitting (4) (see above graphic).
12. Connect the FICM wiring harness to fuel injector wiring harness connectors at the camshaft housing.
13. Stir the injector cleaning fluid and then fill the FICM supply tank with at least one gallon of injector
cleaning fluid. Injector cleaning fluid can turn yellow after being opened and this is a normal condition.
14. Turn Injector Power (4) and Pump Power (5) switches to the OFF position (see below graphic).
15. Connect 110 AC volts power supply to the FICM.
16. Turn the Pump Power switch (5) to the ON position (see above graphic).
17. Turn the fuel injector to be cleaned (8) to the ON position (see above graphic). All other injectors
should be turned off.
18. Turn the Injector Power (4) switch to the 20 Second position (see above graphic).
19. Turn the 20 Second Timer Start (3) switch to the RUN position (see above graphic).
20. Monitor the pressure on the FICM gauge (1) (see above graphic). The pressure should bleed down
during the 20 second process. A fuel injector pressure stuck at 2062 kPa (200 psi) after a fourth
cleaning cycle indicates the tested fuel injector has failed. Do not replace the fuel injector at this time.
21. Once fuel injector cleaning begins for the chosen fuel injector, the injector switch (8) illuminates. The
injector switch turns off (see above graphic) after cleaning is complete. After the injector light has
turned off, turn the injector switch (8) off (see above graphic).
22. Repeat steps 17 through 21 to clean the remaining fuel injectors. Clean each fuel injector four times.
The Cycle Counter (6) tracks the number of cleaning cycles completed. After all fuel injectors have
been cleaned four times, reset the cycle counter (7) (see above graphic).
23. Push the round red button (2) on FICM to remove all pressure from the system (see above graphic).
- 12 -
GHG17/GHG14/EPA10/EPA07 Engines – Fuel Rail Fittings
24. Replace any injectors that failed testing in step 20. Refer to workshop manual section “Removal of the
Fuel Injector” Continue to step 26 after replacing all failed injectors.
25. Loosen the pressure limiting valve. Allow the cleaning fluid to drain from the fuel rail. Once the
cleaning fluid has drained, torque the pressure limiting valve to 100 N·m (74 lb·ft).
26. Disconnect the FICM supply line from the fuel rail supply fitting.
27. Connect a Detroit™ approved fuel primer to the fuel rail supply fitting at the fuel rail.
28. Using the fuel primer, pressurize the fuel rail to 655 kPa (95 psi).
29. Turn the fuel injector to be cleaned (8) to the ON position (see above graphic). This will clean the fuel
injectors with diesel fuel. All other fuel injectors should be turned off.
30. Turn the Injector Power (4) switch to the 20 Second position (see above graphic).
31. Turn the 20 Second Timer Start (3) switch to the RUN position (see above graphic).
32. Once fuel injector cleaning begins for the chosen fuel injector, the injector switch (8) illuminates. The
injector switch turns off (see above graphic) after cleaning is complete. After the injector light has
turned off, turn the injector switch (8) off (see above graphic).
33. Repeat steps 29 through 32 to clean the remaining fuel injectors with diesel fuel.
34. Push the round red button (2) on FICM to remove all pressure from the system (see above graphic).
35. Turn the fuel priming tool off, and turn Injector Power (4) and Pump Power (5) switches to the OFF
position (see above graphic).
36. Disconnect the FICM wiring harness from the fuel injector wiring harness connectors.
37. Disconnect the fuel primer from the fuel rail supply fitting and the FICM return line from the needle
return line.
38. Remove the FICM fuel return fitting from the needle return line.
39. Remove the FICM fuel rail supply fitting from the fuel rail.
40. Lubricate the fuel rail pressure sensor seal ring and threads. Install the fuel rail pressure sensor.
Torque to 65 N·m (48 lb·ft).
41. Connect the engine wiring harness to the fuel injector wiring harness connectors.
42. Install the needle return line onto the fuel filter module. Torque to 30 N·m (22 lb·ft).
43. Using a Detroit™ approved fuel primer, prime the fuel system. Refer to workshop manual section
“Priming The Fuel System”
44. Use DiagnosticLink® to perform the FICM Routine (or run the engine at 1200 RPM for 10 minutes).
45. Install the front bumper. Refer to OEM procedures.
46. Close the hood.
- 13 -
GHG17/GHG14/EPA10/EPA07 Engines – High Pressure Fuel Line Fittings
Testing and Cleaning GHG17/GHG14/EPA10/EPA07 Engine Fuel Injectors Using
High Pressure Fuel Line Fittings
FICM Fittings Used in the Procedure
Tool Number
Tool Name
DKI001E21003-5
FICM High Pressure Fuel Line Supply Fitting
DKI001E21003-6
FICM High Pressure Fuel Line Block Off Fitting
DKI001E21003-7
(GHG17,GHG14, EPA10)
DSN001E21003-1
(EPA07)
Table 7
Tool Graphic
FICM Fuel Return Fitting
Test and Clean as follows:
1.
2.
3.
4.
Turn ignition OFF, apply parking brake, chock wheels, and perform any other applicable safety steps.
Open the hood
Remove the bumper. Refer to Original Equipment Manufacturer (OEM) procedures
Remove the high pressure fuel rail supply lines (2) (see below graphic). Refer to workshop manual
section ‘Removal of the High Pressure Fuel Rail Supply Lines’ (single use part).
- 14 -
GHG17/GHG14/EPA10/EPA07 Engines – High Pressure Fuel Line Fittings
5. Using a fuel line socket, loosen all six high pressure fuel injector lines (1) at the fuel rail only (see
above graphic). Allow the fuel to drain from the high pressure fuel injector lines. Once all lines have
been drained, torque the fuel injector line nuts to 40 N·m (30 lb·ft).
6. Remove the needle return line (3) from the fuel filter module and position aside (see above graphic).
Leave the line connected to the cylinder head.
7. Disconnect the engine wiring harness from the fuel injector wiring harness connectors.
8. Install the Fuel Injector Cleaning Machine (FICM), fuel rail supply fitting onto the high pressure fuel rail
supply line, front connection point (1) at the fuel rail (see below graphic). Torque to 40 N·m (30 lb·ft).
9. Install the FICM fuel rail block off fitting onto the high pressure fuel rail supply line, rear connection
point (2) at the fuel rail (see above graphic). Torque to 40 N·m (30 lb·ft).
10. Install the FICM fuel return fitting onto the needle return line (3) (see above graphic).
11. Connect the supply line from the FICM to the high pressure fuel rail, supply fitting (1) (see above
graphic).
12. Connect the return line from the FICM to the fuel return fitting (3) (see above graphic).
13. Connect the FICM wiring harness to fuel injector wiring harness connectors at the camshaft housing.
14. Stir the injector cleaning fluid and then fill the FICM supply tank with at least one gallon of injector
cleaning fluid. Injector cleaning fluid can turn yellow after being opened which is a normal condition.
15. Turn Injector Power (4) and Pump Power (5) switches to the OFF position (see below graphic).
- 15 -
GHG17/GHG14/EPA10/EPA07 Engines – High Pressure Fuel Line Fittings
16. Connect 110 AC volts power supply to the FICM.
17. Turn the Pump Power switch (5) to the ON position (see above graphic).
18. Turn the fuel injector to be cleaned (8) to the ON position (see above graphic). All other injectors
should be turned off.
19. Turn the Injector Power (4) switch to the 20 Second position (see above graphic).
20. Turn the 20 Second Timer Start (3) switch to the RUN position (see above graphic).
21. Monitor the pressure on the FICM gauge (1) (see above graphic). The pressure should bleed down
during the 20 second process. A fuel injector pressure stuck at 2062 kPa (200 psi), after a fourth
cleaning cycle, indicates the tested fuel injector has failed. Do not replace the fuel injector at this time.
22. Once fuel injector cleaning begins for the chosen fuel injector, the injector switch (8) illuminates. The
injector switch turns off (see above graphic) after cleaning is complete. After the injector light has
turned off, turn the injector switch (8) off (see above graphic).
23. Repeat steps 18 through 22 to clean the remaining fuel injectors. Clean each fuel injector four times.
The cycle counter (6) tracks the number of cleaning cycles completed. After all fuel injectors have
been cleaned four times, reset the cycle counter (7) (see above graphic).
24. Push the round red button (2) on FICM to remove all pressure from the system (see above graphic).
25. Replace any fuel injectors that failed testing in step 21. Refer to workshop manual section ‘Removal of
the Fuel Injector’. Continue to step 26 after replacing the failed injectors.
26. Using a fuel line socket, loosen all six high pressure fuel injector lines at the fuel rail only. Allow the
cleaning fluid to drain from the high pressure fuel injector lines. Once all lines have been drained,
torque the fuel injector line nut to 40 N·m (30 lb·ft).
27. Disconnect the FICM supply line from the fuel rail supply fitting.
28. Connect a Detroit™ approved fuel primer to the fuel rail supply fitting at the fuel rail.
29. Using the fuel primer, pressurize the fuel rail to 655 kPa (95psi).
30. Turn the fuel injector to be cleaned (8) to the ON position (see above graphic). This will clean the fuel
injectors with fuel. All other fuel injectors should be turned off.
31. Turn the Injector Power (4) switch to the 20 Second position (see above graphic).
- 16 -
GHG17/GHG14/EPA10/EPA07 Engines – High Pressure Fuel Line Fittings
32. Turn the 20 Second Timer Start (3) switch to the RUN position (see above graphic).
33. Once fuel injector cleaning begins for the chosen fuel injector, the injector switch (8) illuminates. The
injector switch turns off (see above graphic) after cleaning is complete. After the injector light has
turned off, turn the injector switch (8) off (see above graphic).
34. Repeat steps 30 through 33 to clean the remaining fuel injectors with diesel fuel.
35. Push the FICM’s round red button (2) to remove all pressure from the system (see above graphic).
36. Turn the fuel priming tool off, and turn Injector Power (4) and Pump Power (5) switches to the OFF
position (see above graphic).
37. Disconnect the FICM wiring harness from the fuel injector wiring harness connectors.
38. Disconnect the fuel primer from the fuel rail supply fitting and the FICM return line from the needle
return line.
39. Remove the FICM fuel return fitting from the needle return line.
40. Remove the FICM fuel rail supply fitting from the fuel rail.
41. Remove the FICM fuel rail block off fitting from the fuel rail.
42. Connect the engine wiring harness to the fuel injector wiring harness connectors.
43. Install the needle return line onto the fuel filter module. Torque to 30 N·m (22 lb·ft).
44. Install new high pressure fuel rail supply lines and prime the fuel system. Refer to workshop manual
section ‘Installation of the High Pressure Fuel Rail Feed Lines’ (single use part).
45. Using a Detroit™ approved fuel primer, prime the fuel system. Refer to workshop manual section
‘Priming The Fuel System’.
46. Use DiagnosticLink® to perform the FICM Routine (or run the engine at 1200 RPM for 10 minutes).
47. Install the front bumper. Refer to OEM procedures.
48. Close the hood.
- 17 -
Priming the Fuel Injector Cleaning Machine
During normal operation of the Fuel Injector Cleaning Machine (FICM), the pressure gauge reads above 999
kPA (145 psi). Once maximum pressure is reached, the pump shuts off. If pressure drops below a minimum
set point, the pump turns back on to maintain pressure. If the FICM is unable to reach and maintain 999 kPA
(145 psi), priming the FICM may be necessary.
Prime as follows:
1. Loosen both vent caps on the FICM clean fluid tank and the waste tank.
2. Remove both return and supply quick connect lines (2) from the fuel injector machine.
3. Connect 110 AC volts power supply to the FICM.
4. Turn the pump power switch (4) to the CONSTANT position.
5. While the pump is running, hold down the red pressure relief button (3) next to the pressure gauge for
30 seconds until all air is purged out of the system and the system is properly primed.
6. After priming the FICM the pressure gauge (1) should read above 999 kPA (145 psi) during operation.
7. If the pressure gauge does not read above 999 KPA (145 psi), air is still trapped in the system.
Repeat steps four through six.
8. If the pressure gauge fails to build pressure after repeating steps four through six, the FICM pump
assembly needs replacing.
- 18 -
- The world’s #1 fuel additive for both gasoline and diesel...
- A great tune-up in a bottle – treats gasoline, diesel fuel...
- Cleans and lubricates the fuel system, including fuel...
- Improves fuel economy by burning excess exhaust emissions
- Increases power and acceleration by improving fuel flow and...
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TSB/Document ID: 18SP747REV2
Replacement Service Bulletin Number:
MFR Communication Date: 2023-04-03
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE AND ENGINE COOLING
MFR Component System:
MFR Component Subsystem:
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