DIRECT FUEL INJECTION
90-855347R1 JANUARY 1999 Page 3B-51
Air Compressor Pressure Test
Install Pressure Gauge Assembly 91-852087A1/A2 to fuel rail pressure test valves. Star-
board rail has fuel pressure test valve. Port fuel rail has air pressure test valve.
NOTE: After 15 seconds of cranking engine with starter motor, air pressure gauge should
indicate 79
±
2 psi (544.0
±
13.8 kPa) and fuel pressure gauge should indicate 89
±
2 psi
(613.5
±
13.8 kPa).
56146
a
b
c
d
a
b
c
d
a-Air Pressure Gauge (Should Indicate 79 ± 2 psi (544.0 ± 13.8 kPa)
b-Fuel Pressure Gauge (Should Indicate 89 ± 2 psi (613.5 ± 13.8 kPa)
c-Fuel Pressure Test Valve
d-Air Pressure Test Valve
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