Changing the fuel filter
Thread Starter
Racer
Joined: Sep 2002
Posts: 407
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From: Alma AR
Changing the fuel filter
I have a 1990 coupe and I want to change the fuel filter. The Haynes manual says to pull the fuse marked FP in the fuse box and run the engine out of gas to releve the fuel pressure, but I don't have such a marked fuse. I figured that I'd releve the fuel pressure by opening up the fuel rail schrader valve. But when I did this and pressed on the needle valve I only got a drop of fuel. the car was cold, having sat all night, but I expected more pressure. Was this normal?
Le Mans Master
Joined: Feb 2005
Posts: 5,146
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From: The Motor City
Originally Posted by PBnf
I have a 1990 coupe and I want to change the fuel filter. The Haynes manual says to pull the fuse marked FP in the fuse box and run the engine out of gas to releve the fuel pressure, but I don't have such a marked fuse. I figured that I'd releve the fuel pressure by opening up the fuel rail schrader valve. But when I did this and pressed on the needle valve I only got a drop of fuel. the car was cold, having sat all night, but I expected more pressure. Was this normal?
Burning Brakes
Joined: Jun 2005
Posts: 802
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From: What do I know anyway? I'm just a 50 year old No0b
Originally Posted by the blur
just take the filter out and expect to get a little wet with fuel. I just did it last weekend without relieving the pressure.
I did this last week as well. Have some rags handy because what's in the fuel line is going to drain out.
Race Director
Joined: Sep 2005
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St. Jude Donor '07
Nuthin sez lovin' like a flammable liquid running up past your elbows and soaking your armpit hair.
Seriously, though, put that corner of the car on a jackstand. Put a pan under it. Have some old rags ready and take it slow. It would be a bummer to mess up the fuel line. I detached the tank side first. Then I let it drain for a couple minutes before disconnecting the engine side.
Tip: Get the fuel lines in place and the filter loosely mounted to the body before tightening/clipping.
I just changed mine. My '85 had the factory filter on it! 65k & 20 years? It also has factory belt, plugs, wires, cap, and coil. I assume it has factory rotor and HEI. Guess what I'll be doing this winter? I wish my garage was attached.
Seriously, though, put that corner of the car on a jackstand. Put a pan under it. Have some old rags ready and take it slow. It would be a bummer to mess up the fuel line. I detached the tank side first. Then I let it drain for a couple minutes before disconnecting the engine side.
Tip: Get the fuel lines in place and the filter loosely mounted to the body before tightening/clipping.
I just changed mine. My '85 had the factory filter on it! 65k & 20 years? It also has factory belt, plugs, wires, cap, and coil. I assume it has factory rotor and HEI. Guess what I'll be doing this winter? I wish my garage was attached.
Team Owner
Joined: Oct 2000
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From: Fort Knox, KY
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I pulled the fuse on my 92 and let the engine run until it starved. I'd say I only had about 1/4 cup of gasoline leak out of the line after that, but you do what you gotta' do to get 'er done!
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Race Director
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St. Jude Donor '07
Originally Posted by Mtrhd329
hey guys stupid question. What is the tiny filter right above the fuel filter?
Anyone know?
Thread Starter
Racer
Joined: Sep 2002
Posts: 407
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From: Alma AR
Thanks guys. It just seemed strange that when I opened the schrader valve only a drop came out. I expected a big pressure release. By the way, does anybody know what fuse on a 90 disables the fuel pump?
Racer
Joined: Jul 2002
Posts: 313
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From: Dallas Tx
Originally Posted by onedef92
I pulled the fuse on my 92 and let the engine run until it starved. I'd say I only had about 1/4 cup of gasoline leak out of the line after that, but you do what you gotta' do to get 'er done!
Racer
Joined: Jun 2005
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From: A place where chickens can cross the road without having their motives questioned
Originally Posted by PBnf
Thanks guys. It just seemed strange that when I opened the schrader valve only a drop came out. I expected a big pressure release. By the way, does anybody know what fuse on a 90 disables the fuel pump?
Drifting
Joined: May 2003
Posts: 1,979
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From: Lakeport CA
90 has some fuses up under the passenger knee bolster... pita location for a number of things. Like power locks etc. After all night most pressure will drop. That is why you hear the pump when you turn the key before hitting start...