How can I depressurize the fuel system on a 93 LX with a 5.0? Ive got to change out the fuel filter at school thursdays and I have no clue how to do it since the manual I have doesnt tell me how to do it. Thanks for your help.

 

Let the car sit for several hours, and it will depressurize itself. If you wont to be extra carefull let it set over night.

 

Gosh I am guessing on a 5.0
But, on my 2.3 there on the fuel rail to the fuel injectors there is a metal valve with a cap very similar to the ones on your tire rims. Remove the cap and prees the center of valve core (the same way you would let air from a tire) Only here you will have gas spurting from it. So of course don't be close to flames or sparks. have a rag to soak up that squirts out. don't be to close to it for it will squirt you in the face like squirt gun.

this valve is good to know about if your car cranks well but won't start for ir it don't squirt you than need gas.
On a Bronco once I removed the valve core and primed it with gas to get it primed to start.

 

Only problem is that I cant let the car set. Ive got to take it to automechanics tomarrow and I have to drive it to the shop before we can work on it. Is there anything else I could do?

 

Liek daysleepin described there is a schraeder valve on the fuel line. It is on the passenger side, behind the alt I believe. It will have a little black cap on it.

 

Use the schraeder valve to depressurize the fuel system, just leaving it sitting over night won't relieve the fuel pressure.

 

Hum, funny thing it worked for me on several occasions. Both when hooking up nitrous kits, and changing fuel pressure regulators. As well as I have watched several fuel filters get changed, and the schraeder valve never got touched.

 

I recently changed the fuel filter on my 92. My Haynes manual suggested that I disconnect the" intertia switch" located in the "luggage" compartment which will shut off the fuel pump, then start the car and let it run itself out of fuel. (This switch is a safety feauture in case of a rear end collision) I decided that I did'nt feel like tearing my car apart, so I went ahead and took my chances and preceded to change the filter. I found that there was very little pressure (at least nothing that I could'nt deal with) and very little mess, of course, this would be up to the individual. Good Luck.

P.S. I did run the car right before I changed it.

 

When I changed my ff I just put the car on the lift, put an oil drain tank under it, took one end of the fuel line off the filter and let it squirt out. Sure not all the fuel went in the drain tank but it doesn't hurt the shop floor to have some gas spill on it!

 

Well guys I got it changed out today along with new pads and bleeding the brakes. I used the valve and I didnt have any problems. Once I had it in the shop I opened the hood to let heat escape and we changed the filter with about 25 minutes left in class so the engine was pretty cool. Didnt have major gas leaks either. One thing I noticed was that the car seems more responsive now. Thanks for ya'll help.

 

 

any time