It controls / regulates the fuel pressure.
The 1974 Chevy truck has a mechanical fuel pump with a built in pressure regulator.
In the gas tank
no gas no power
The fuel pump is kaput.
Where is the fuel pressure regulator located on a 1989 chevy silvarado with 5.7 liter engine
The mechanical fuel pump regulates the fuel pressure. This truck is not fuel injected. It has a carburetor.
use a pressure guage hooked to the scrader port on the fuel line.
It may be in the fuel tank.
The fuel pressure regulator would be located in the throttle body in 1989.
It is in the throttle body.
From 87 to 95 did not have them. You will have to crack the fuel line alittle to relieve fuel pressure.