Section 06
ENGINE MANAGEMENT (DI)
Subsection 03
(COMPONENT INSPECTION AND ADJUSTMENT)
SMR2002-075 _06-03A.FM
06-03-17
Disconnect direct injector connector then pull in-
jector out of cylinder head.
1. Air/fuel rail
2. Disconnect and pull injector out
Compress the carbon dam using tool (P/N 529 035
716).
Carefully install direct injector in cylinder head pay-
ing attention to carbon dam insertion. Ensure to
position connector pointing toward bottom of cyl-
inder head.
NOTE:
A thin film of injection oil may be applied
to carbon dam if necessary to ease insertion in cyl-
inder head.
Reconnect electrical connector.
1. Carefully insert direct injector
2. Connector pointing toward bottom of cylinder head
Reinstall air/fuel rail.
Carbon Dam Replacement
Remove direct injector. See procedure above.
NOTE:
When replacing a carbon dam, it is recom-
mended to replace it on both injectors. It is also
recommended to replace all O-rings. When servic-
ing air/fuel rail or direct injectors, we recommend
replacing carbon dams that have been running for
50 hours or more.
CAUTION:
Never reuse a carbon dam after it has
been removed from the injector. Always install
a new one.
Remove carbon dam and O-ring using a small pick.
Install seal guide (P/N 529 035 715) on end of injec-
tor. Carefully slide carbon dam in injector groove.
Use carbon dam compressor (P/N 529 035 716) to
compress carbon dam evenly.
FUEL PUMP
Pressure Test
The pressure test will show the available pressure
from the fuel pump.
Ensure there is no leak from hoses and fittings.
Repair any leak.
Ensure there is enough gas in fuel tank.
Use the VCK (Vehicle Communication Kit) to re-
lease the fuel pressure in the system. Look in the
ACTIVATION section of the software B.U.D.S.
Disconnect inlet and outlet hoses from fuel pump
using tool (P/N 529 035 714).
1
F12R0GA
2
F12R0HA
1
2
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Summary of Contents for GTX 4-TEC 5573 2002
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