1990 Chevy S-10 How to replace Fuel Pressure Reg

TORTURDCHAOS

MEMBER
1990 CHEVROLET S-10
6 CYL
2WD
MANUAL
110,000 MILES

I have a 1990 S10 that seems to be flooding its self. Done plugs & wires, distributor and rotter along with the fuel filter on it. After some discussion with a couple mechanics I know they are leaning towards the fuel pressure regulator being bad.

I'm wondering how hard that is to replace? And were exactly it is located at.

1 Reply

BLUELIGHTNIN6

MECHANIC
16,542 POSTS

Fuel pressure regulator should be under hood, near the fuel rail assembly close to firewall.

1. Properly relieve the fuel system pressure and disconnect the negative battery cable.
2. Disengage the vacuum line from the pressure regulator.
3. If applicable, disengage the fuel line(s) from the regulator.
4. Remove the retaining bolts, then separate the regulator from the fuel rail assembly.

To install:

5. Install the regulator to the fuel rail and secure using the retaining bolts.
6. If applicable, engage the fuel line(s) to the regulator.
7. Engage the regulator vacuum hose.
8. Connect the negative battery cable, then pressurize the fuel system by cycling the ignition (without attempting to start the engine) and check for leaks.