How do I relieve fuel pressure for my 2000 mercury mystique, 2.0l? It is the returnless fuel system, with a fuel rail (aka Fuel injector) pressure sensor. There is no Schrader valve or other release port.
The Chilton and other manuals are based on the older fuel system design.
When I remove the FUEL PUMP FUSE (15amp - the only one - fuse#9) and the FUEL PUMP RELAY (relay #1), the car still continues to run, even 3 minutes later. The relay I understand. In newer systems, if the oil pressure switch detects pressure, it overrides the relay.
Can the shut-off fuel switch be used? Where is the electrical connector. OR, can I use another method to relief fuel pressure?
Tim
The Chilton and other manuals are based on the older fuel system design.
When I remove the FUEL PUMP FUSE (15amp - the only one - fuse#9) and the FUEL PUMP RELAY (relay #1), the car still continues to run, even 3 minutes later. The relay I understand. In newer systems, if the oil pressure switch detects pressure, it overrides the relay.
Can the shut-off fuel switch be used? Where is the electrical connector. OR, can I use another method to relief fuel pressure?
Tim
Apr 30, 2015 at 5:30 PM