Comanche 4WD L4-150 2.5L VIN H TBI (1986)
Fuel Pressure Regulator: Adjustments
Fig. 1 Diagnostic connector terminal identification
Adjustment is only necessary after a replacement pressure regulator has been installed.
1.
Remove air filter.
2.
Connect tachometer between terminals D1-1 and D1-3 of diagnostic connector, Fig. 1.
3.
Remove screw plug, then connect fuel pressure gauge to fuel body pressure test fitting.
4.
Start engine and accelerate to approximately 2000 RPM.
5.
Turn adjustment screw on bottom of regulator to obtain pressure of 14.5 psi. Turning screw inward increases pressure, while turning outward
decreases pressure.
6.
Turn ignition off, then disconnect tachometer.
7.
Disconnect fuel pressure gauge, then install screw plug.
8.
Install air filter.
