Ford Thunderbird Manual page 239

03·04A·5
DESCRIPTION AND OPERATION (Continued)
Fuel Injection Supply Manifold
The fuel injection supply manifold (9F792) delivers
high-pressure fuel from the vehicle fuel supply line to
the fuel injectors. The fuel injection supply manifold
consists of the following:
a tubular fuel rail
•
• fuel injector connectors
• a mounting flange to the fuel pressure regulator
(9C968)
mounting attachments which locate the fuel injection
•
supply manifold and provide fuel injector retention
fuel inlet and outlet connections with push connect
•
fittings
Part
Item Number
1 90930
2 9C968
3
N60669 1-S2
4 N8051 17-S8M
5 9F593
6 9F792
(Continued)
Fuel Charging and Controls-3.8L
V9238-B
Description
Fuel Charging Wiring
Fuel Pressure Regulator
Bolt
Bolt (4 Req'd)
Fuel Injector
Fuel Injection Supply
Manifold
Part
Item Number Description
-
A Tighten to 20-30 N-m ( 15-22
Lb-Ft)
-
B
Tighten to 8- 1 1 N·m (7 1-97
Lb-ln)
Fuel Pressure Regulator
The fuel pressure regulator (9C968):
• is mounted on the fuel injection supply manifold
(9F792) downstream of the fuel injectors.
regulates the fuel pressure supplied to the fuel
•
injectors .
is a diaphragm-operated relief valve in which one
•
side of the diaphragm senses fuel pressure and the
other side is subjected to intake manifold vacuum.
nominal fuel pressure is established by a spring
•
preload applied to the diaphragm.
balances one side of the diaphragm with manifold
•
pressure to maintain a constant fuel pressure drop
across the fuel injectors.
bypasses and returns excess fuel to the fuel tank
•
(9002) . .
Part
Item Number Description
-
1
Engine Vacuum Reference
Tube (Part of 9C968)
-
2 Ball Seat (Part of 9C968)
-
3 Spring (Part of 9C968)
-
4 Upper Housing (Part of
9C968)
(Continued)
1997 Thunderbird, Cougar July 1 996
03-o4A-5