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Section 06
ENGINE MANAGEMENT (DI)
Subsection 03
(COMPONENT INSPECTION AND ADJUSTMENT)
06-03-4
SMR2002-075 _06-03A.FM
QUICK FUEL PRESSURE TEST
Disconnect outlet hose (the one with the fuel fil-
ter) from fuel pump using tool (P/N 529 035 714).
Connect adapter to pressure gauge as shown.
1. Pressure gauge (P/N 529 035 709)
2. T-adapter (P/N 529 035 710)
Install pressure gauge between disconnected hose
(
inline
installation).
1. Fuel filter
2. Fuel line going to air/fuel rail
3. Pressure gauge between disconnected hose (
inline
installation)
Install safety lanyard and observe fuel pressure.
Do not crank engine.
If pressure is within limits, air/fuel rail is working
adequately. Proceed with the fuel pressure test
below.
If pressure is out of limits, go to FUEL DELIVERY
part and proceed with the tests described there.
Crank or start engine
and observe fuel pressure.
If pressure is within limits, fuel and air systems are
working adequately. No subsequent tests are nec-
essary for the air/fuel system.
Remove pressure gauge and reinstall fuel hose. At
installation apply engine oil on O-ring.
If pressure is out of limits, proceed with all the tests.
WARNING
Read PRESSURE TEST under AIR/FUEL RAIL
farther in this section for precautions and
setup to take care of, before performing this
test. The procedure here is a quick summary.
F12R08A
1
2
FUEL REGULATOR PRESSURE
(when installing safety lanyard)
185 ± 14 kPa (27 ± 2 PSI)
FUEL PRESSURE
(when cranking engine
or when engine is running)
738 ± 14 kPa (107 ± 2 PSI)
2
3
1
F12R09A
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Summary of Contents for GTX 4-TEC 5573 2002
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