Test Dr-18A - Testing Fuel Pressure

WARNING: This page is about a different car, the 1994 Plymouth Laser and 1994 Eagle Talon. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION . For appropriate wiring diagram, see WIRING DIAGRAMS .

Turn ignition off. Disconnect fuel pump connector at fuel tank. Crank engine for 10 seconds. Turn ignition off. Disconnect negative battery cable.
WARNING: High fuel pressure may be present in fuel lines. Open fuel system with caution. See FUEL PRESSURE RELEASE .
Connect fuel pressure gauge and adapter to fuel rail. Reconnect negative battery cable. Connect jumper wire between battery positive terminal and single-wire fuel pump check connector Black/White wire. Fuel pump check connector is located near battery, in engine compartment. Ensure no fuel leaks are present.
Disconnect jumper wire from fuel pump check connector. Start engine and idle. Disconnect and plug fuel pressure regulator vacuum hose. On non-turbo vehicles, fuel pressure should be 47-54 psi (3.3-3.8 kg/cm² ). On M/T turbo vehicles, fuel pressure should be 36-44 psi (2.5-3.1 kg/cm² ). On A/T turbo vehicles, fuel pressure should be 41-50 psi (2.9-3.5 kg/cm² ). If fuel pressure is not within specification, repair as necessary. Perform TEST VER-2 . If fuel pressure is within specification, go to next step.
Reconnect vacuum hose to fuel pressure regulator. On non-turbo vehicles, fuel pressure should be 37-43 psi (2.6-3.0 kg/cm² ). On M/T turbo vehicles, fuel pressure should be 26-34 psi (1.8-2.4 kg/cm² ). On A/T turbo vehicles, fuel pressure should be 32-38 psi (2.2-2.7 kg/cm² ). If fuel pressure is not within specification, repair as necessary. Perform TEST VER-2. If fuel pressure is within specification, perform TEST DR-19A.