Fuel filter replacement tips - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 09-28-2006, 01:17 AM   #1
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Default Fuel filter replacement tips

I have read many posts regarding replacing the fuel filter, but I still have questions.
When the old filter is removed, what stops the fuel from pouring out of the line? I see people have said to crimp it, but isn't the line made of metal? That will ruin it.
Can it be plugged with a rag, some clay or something?
What kind of pressure are we talking about? Is it just trickling out by gravity?
Should I just have someone more qualified do it?
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Old 09-28-2006, 01:19 AM   #2
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*MOVED TO 92-99*

I replaced mine 2 years ago.

I BELIVE there is a pressue valve on the fuel rail that you open up. Take off the filter, there will be some gas, maybe a cup or so, that will still leak out. Instert the new one and you're set.

Gearheads, sound right?
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Old 09-28-2006, 01:56 AM   #3
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I replaced mine here 40 K ago (need to do it again) but there is some pressure that is built up in the line, some but not too much. On the right side for the filter (you looking directly at it), there is a quick-connect and on the left side, you have threaded line. I would loosen the threaded line first; you can control the drainage of the gasoline easer that way. Have some rags handy, you will need them. Get a good filter, not some piece of crap.

DON'T CRIMP ANYTHING!!!!!

Have some extra time incase it takes you a little longer and some beer handy Easy job.

Pics Please!
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Old 09-28-2006, 08:35 AM   #4
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There isn't much fuel loss and it won't siphon out fo the tank.

You hop under.. soak the screwed in fitting with PB Blaster.. go back a 1/2 hour later and 5 minutes later you are all set.

BTW. Disconnect the quick connect end first, hold the line fitting solidly (so it doesn't move) then using your other wrench turn the FILTER only to remove.

Many lines are rusting near the filter and the fittings don't spin freely on the line. This causes the line to twist and then you would need to fix the line.
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Old 09-28-2006, 12:09 PM   #5
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My 92 SE has flexible lines and quick connect fittings at both ends of the filter. When did the change over to metal lines occur? Mine is located on the passenger side front of the car but I know some are at the rear. Was this a change with a particular model year?
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Old 09-28-2006, 12:16 PM   #6
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I want to re-stress the pressure issue. There is a schraeder valve (looks like the valve on your tire, only bigger) on the fuel rail. Take off the cap, position a screwdriver or something to press the valve, then wrap the area with rags to catch the gas, and then press the valve. This will allow the pressure to "normalize" and you won't have to worry about anything but draining at the filter.

NO SMOKING PLEASE!! In case you did not know, gas is very flammable. Gas and lit cigarettes, while not guarranteed to start a fire, are still not a good mix.

Oh, and keep your beer covered or a couple of feet away. Gas tatses awful..
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Old 09-28-2006, 12:33 PM   #7
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when i did my fuel filter, i did not relieve the fuel pressure.

only a good two splashes happen.. i was able to close my eyes and move intime.

not much will drip on a 94 se.
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Old 09-28-2006, 09:25 PM   #8
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I just did this 2 weeks ago. Don't worry about the pressure. Lay a couple rags on your chest, remove the threaded side first and then the quick connect. Gas will drip but wont come gushing out of anything except the filter really if you can be quick enough. Install in reverse order. You can do it alone but another hand is always better. Just keep the key turned to "ON" for a bit before you crank the hell out of it to let the pressure build up again.

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