Considering that there's no return line to the tank, it doesn't get
pressurized.
The easiest way to relive the pressure is to remove the fuel pump relay and
start/run the engine until it dies. This way, there's no more fuel left in
the system.
- Bernd
-----Original Message-----
From: owner-dakota-truck@buffnet.net
Subject: Re: DML: Re: RE: Fuel pressure release valve (Bernd)
Yep, some trucks just don't have 'em. Doesn't make much sense, but its
true. :-)
>When replacing the fuel injectors, would there be a lot of pressure if
>you simply disconnect the fuel line that connects to the rail?
There could be. However, there is an alternate method for relieving
fuel pressure without a test port. Basically, you want to remove your gas
filler cap (push in the little flap to be sure there is no pressure
remaining in the tank), remove the fuel pump fuse from the PDC under the
hood, remove the coil wire, then crank over the engine. That should
relieve most of the pressure. You can now disconnect the negative battery
cable like you normally would before working on the engine. If you want to
go to the next level, you should unplug one of the injectors and put
alligator clips on the pins. Hook one of the pins to the negative pole of
your battery, then *briefly* touch the other lead to the positive
pole. This will engage the injector and cause it to spit out fuel and
relieve most of the pressure that's still in the system. (Only run the
injector for about a half second or a second at a time though, prolonged
use like this could damage it.)
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 11:55:07 EDT