I am replacing the fuel filter on my 1989 Lincoln TownCar that has the 5.0
liter w/EFI. Looking at the shop manual it tells me to relieve the fuel line
pressure with a relief valve that is located on the LH side of the car
toward the front. Does that mean the left hand side as I sit in the driver
seat or looking under the hood? I can't seem to find this valve.
Additionally how do I relieve the pressure at the valve once I find it? Does
this require special tools?
There's a chrome Schrader (tire-type) valve on the fuel rail. Depress
the center just like a tire valve and the fuel will squirt out,
relieving pressure. Personally, I just disconnect the fuel filter line
fitting slowly with a shallow pan underneath. There's an initial squirt
of fuel, but nothing that dramatic.
"Robert L. Wells" wrote:
Two ways to relieve pressure. (1) Remove the fuel pump relay and crank the
engine ( no fuel spills this way ). (2) The Schrader valve is on the fuel rail
on the engine. If you have a fuel pressure gauge hose install it and catch the
fuel in a container, other wise fuel spills out.
in article 1z19b.54506$cj1.23331@fed1read06, Robert L. Wells at
firstname.lastname@example.org wrote on 9/14/03 11:28 AM:
Most vehicles have a switch that cuts the fuel supply in the event of an
accident. If your vehicle is jarred hard enough, the switch will trip and
cut the fuel. I have an 89 Bronco II, and to relieve the pressure on it, the
manual says to disconnect the electrical connector to the fuel cutoff
switch, which happens to be located under the carpet near the passenger
floorboard up front. Some cars have them in the trunk. After disconnecting
the connector on the switch, start the engine and run it til it quits.
Otherwise, you can relieve pressure at the Schrader valve located on the
fuel rail (look at the intake manifold near the injectors for a valve that
looks like a tire valve.) Just don't release the fuel onto a hot engine.
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