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View Full Version : how do you depressure the fuel system


gabegt90
05-23-2007, 04:06 PM
hey mangs I need to change the fuel filter on my dad's o6 grandmarquis how do I depressure the fuel system I know how to turn the fuel pump off but how do I dpressureize the fuel system any help will be great thanks mangs
85crownHPP
05-23-2007, 05:58 PM
find the pressure test port, it will look like a tire valve stem stcking out of a fuel line. Just press the valve like you are checking the air in a tire and it will spit out a little fuel
seneeb
05-24-2007, 06:18 AM
depressure the fuel system?! bah dont be a pussy!

just turn teh key off. shove the tool in the line, turn your head away, close your eyes and remove the line, there pressure's gone.

removing the pressure is too slow whey they only pay .2 hours for most fuel filters now.
FordInPossession
05-24-2007, 07:16 AM
they only pay .2 hours for most fuel filters now.

You sure are getting screwed.... around here the average is .5
gadget73
05-24-2007, 02:44 PM
Smack the intertia cutout while the motor is running. It will de-pressurize real quick. Pulling the fuel pump relay while its running also will do the same thing. Should be in the power box under the hood.
86VickyLX
05-24-2007, 03:26 PM
Yeah and then let the car run until it dies. Cause the engine will get no gas and cut out. And depressurize the system.
87vicFIVEO
05-24-2007, 05:09 PM
depressure the fuel system?! bah dont be a pussy!

just turn teh key off. shove the tool in the line, turn your head away, close your eyes and remove the line, there pressure's gone.

removing the pressure is too slow whey they only pay .2 hours for most fuel filters now.

x2
Lincolnmania
05-24-2007, 06:08 PM
x2

x3
do you have the tool gabe?
seneeb
05-25-2007, 06:02 AM
actually i looked at it yesterday at werk, and it's .5. but hell, you can get it done in like, 3 minutes or less without bothering to depressurize (cept on fucking explorers/mountaineers/aviators where they have like 4 covers over them.

ack, must get claritin, sinuses going nutzoid
gabegt90
05-25-2007, 02:28 PM
all right cool I'll do it this weekend
DanHool
06-01-2007, 03:36 AM
do the 06's even have return lines?
drock96marquis
06-02-2007, 11:39 PM
do the 06's even have return lines?

Nope.


2006s also lack the EFI schrader valve test port....



Just turn the car off and let sit for about an hour or more. Most of the pressure will be gone, have a catchcan for all the extra gas that pours out.