Changing Fuel Filter-HELP!
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Joined: Dec 2004
Posts: 87
Likes: 0
From: Columbus Ohio
Changing Fuel Filter-HELP!
Tried to change the fuel filter on my 93.
- Released pressure from gas cap.
- Took off nut on fuel lines on evaporator under hood.
- Took all 3 fuel line bracket nuts off from under rocker.
- Took off inlet side line.....here is the problem.
- Gas wouldn't stop running out of the line from the tank.
- Tank is almost full (might be part of the trouble).
- It didn't pour out, cut dripped pretty steady.
- In 1 hour, got about 1" of gas in a good sized oil drain pan.
How do you get the gas to stop?
Also, how do you get to the outlet side of the filter?
I ended up putting it back together.
BTW...I have the front wheels on rhino ramps.
- Released pressure from gas cap.
- Took off nut on fuel lines on evaporator under hood.
- Took all 3 fuel line bracket nuts off from under rocker.
- Took off inlet side line.....here is the problem.
- Gas wouldn't stop running out of the line from the tank.
- Tank is almost full (might be part of the trouble).
- It didn't pour out, cut dripped pretty steady.
- In 1 hour, got about 1" of gas in a good sized oil drain pan.
How do you get the gas to stop?
Also, how do you get to the outlet side of the filter?
I ended up putting it back together.
BTW...I have the front wheels on rhino ramps.
Instructor
Joined: Jan 2004
Posts: 178
Likes: 3
From: Evansville IN
Someone wrote a procedure for changing filter in the tech tip section on this forum that might help. You also need to relieve pressure from the shraeder valve on the fuel rail. Removing gas cap does not relieve pressure on the fuel rail. Good luck. Rich
Elite Torch Red Member
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From: Exit 89 GSP,Lakewood,NJ The Land Of Mojo
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To remove the front part, put a wrench on the fitting and then a wrench on the filter and spin away.
Le Mans Master
Joined: Oct 2003
Posts: 6,130
Likes: 2
From: seattle WA
I've never done anything with the schrader valve when replacing the fuel filter-just put wrench on the filter like Mojo says-you always get a little gas flowing out of the line-just go for it.
Le Mans Master
Joined: Jul 2002
Posts: 5,818
Likes: 2
From: Alive and well in Burlington NC
Originally Posted by rick lambert
I've never done anything with the schrader valve when replacing the fuel filter-just put wrench on the filter like Mojo says-you always get a little gas flowing out of the line-just go for it.
Since the location of the filter is the low point in the system, you'll always get some flow.
Instructor
Joined: Feb 2005
Posts: 144
Likes: 0
Just did mine on my 94 a week or 2 ago (full tank) and I didnt do anything but put it up on the lift (at work) and did it. The top nut was a little hard but all I did was put a wrench on the top nut and spun the filter like mojo said. Didnt lose much gas. That top nut or upper one was hard to hold on to. 
good luck.
good luck.
Melting Slicks
Joined: Oct 2004
Posts: 2,510
Likes: 4
From: Austin Texas
since you have a full tank of gas, your fuel return line will leak like a *****, so get a short piece of rubber hose that will fit over the fuel return line, plug one end with a suitable bolt, and plug that sucker until you are ready to reconnect it.....there is no reason you should have to put up with the nasty smell of gasoline while you are doing this fun project!!
Le Mans Master
Joined: Mar 2000
Posts: 7,805
Likes: 0
From: If you read this, you'll go blind
I just relieved the pressure on the fuel rail and left the gas cap off on my 1992.
When I disconnected the lower part of the filter, I didn't get much drain from the tank side, maybe a 1/2 cup into a coffee can. I was able to put a wrench on the top side of the filter (reaching over the cat) and turn the whole filter by hand to remove it.
I had 1/2 to 3/4 of a take of fuel.
When I disconnected the lower part of the filter, I didn't get much drain from the tank side, maybe a 1/2 cup into a coffee can. I was able to put a wrench on the top side of the filter (reaching over the cat) and turn the whole filter by hand to remove it.
I had 1/2 to 3/4 of a take of fuel.
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Burning Brakes
Joined: Aug 2001
Posts: 1,238
Likes: 0
From: walled lake MI
i plugged the line going to the fuel tank to stem the flow. despite removing the gas cap and releasing pressure in the fuel rail, the gas kept coming.
as for getting to the upper fitting, i tried this: i first removed the lower fitting, then removed the fuel line from the fuel rail and the line mounts on the firewall. i then was able to lift the fuel line attached to the filter as an assembly from the engine compartment. for me this was the easiest way despite adding a couple of steps to the process.
as for getting to the upper fitting, i tried this: i first removed the lower fitting, then removed the fuel line from the fuel rail and the line mounts on the firewall. i then was able to lift the fuel line attached to the filter as an assembly from the engine compartment. for me this was the easiest way despite adding a couple of steps to the process.
Melting Slicks
Joined: Mar 1999
Posts: 2,535
Likes: 2
From: Rochester NY
GM put that fuel filter in the worse location. It a nightmare to put a wrench in there and try turn it. I am glad i don't have to worry about changing fuel filter in that location again, because I got a custom fuel system and a new fuel filter in the spare tire area.
ps. if you still having problem stop the fuel keep coming out. You can remove the gas tank filler lid and loosing up the clamp where the rubber fuel line attach to the sending unit. That will stop your fueling for sure.
ps. if you still having problem stop the fuel keep coming out. You can remove the gas tank filler lid and loosing up the clamp where the rubber fuel line attach to the sending unit. That will stop your fueling for sure.
Last edited by Bruce; Apr 2, 2005 at 07:09 PM.
Racer
Joined: Dec 2002
Posts: 260
Likes: 1
The tech manual says that to relieve the pressure in the fuel line, remove the electronic fuel pump fuse, start the car and let it run until it dies. I don't know that anyone ever does this, but if you want to take your time changing the filter, this will relieve the pressure in the line.
Melting Slicks
Joined: Oct 2004
Posts: 2,510
Likes: 4
From: Austin Texas
Originally Posted by tempest
i plugged the line going to the fuel tank to stem the flow. despite removing the gas cap and releasing pressure in the fuel rail, the gas kept coming.
as for getting to the upper fitting, i tried this: i first removed the lower fitting, then removed the fuel line from the fuel rail and the line mounts on the firewall. i then was able to lift the fuel line attached to the filter as an assembly from the engine compartment. for me this was the easiest way despite adding a couple of steps to the process.
as for getting to the upper fitting, i tried this: i first removed the lower fitting, then removed the fuel line from the fuel rail and the line mounts on the firewall. i then was able to lift the fuel line attached to the filter as an assembly from the engine compartment. for me this was the easiest way despite adding a couple of steps to the process.
tempest is right on...take the extra 10 minutes, disconnect the fuel line connections at the manifold and pull entire assembly up and out from the engine bay. This makes the job a whole lot easier, and you are able to connect the top filter fitting on your workbench...
