Removing rusted fuel filter

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Removing rusted fuel filter

Postby binder [OP] » November 23rd 2010, 8:28pm

I can not get the nuts to budge on the fuel filter, anyone have any tips or do I have to cut the lines?

98 astrovan

thanks
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Re: Removing rusted fuel filter

Postby paintdrying » November 23rd 2010, 10:47pm

For the next few days I want you to go out and spray the nuts with pb blaster. Maybe once or twice a day. Is the problem that the nuts will not move? I usally only cut the lines when the line itself is stuck to the nut, causing the line to just twist when the nut is turned.
advanced auto now sells a line repair kit for around 13 dollars that comes with new line, coupler, and o rings. It is a little tricky if your new at this, post back if you want to cut the lines and I will give you step by step.
Oh, also try and tighten the nut to get it to break free
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Re: Removing rusted fuel filter

Postby RECox286 » November 23rd 2010, 11:16pm

Hey Binder, (good name for the problem)

Rusty fittings at the F/F... Ah, yes I remember it well.

First of all, you will be under the truck, fooling with a volatile liquid, so before we start, make sure to relieve the fuel pressure, and have some rags on hand in case of spills. Be very careful to use as nonsparking tools and techniques.

Ok, Cut the Filter in two. Work on 1/2 of the problem at a time. Most likely the nuts are rusted to the steel pipe where they connect to the filter. Make sure to use flare nut wrenches on the nuts, other wise you may round the nut, rendering it useless for reattaching a new filter. It wouldn't hurt to use a non sparking wire brush, or plumbers' cloth (preferred) to clean up the pipe near the nut. Once the pipe is pretty clean, a squirt of PB would be a good idea. Hold the nut stationary with a flare nut wrench, while trying to unwind the filter half. If you are sucessful, then use plumbers cloth to clean up the pipe under where the nut sits when the filter is in place. I like to use an antiseize compound, being careful to not get it in the O-ring seal.

If the pipe is too rusted to resurect, then get thee to the JY for newer hose assys.

I had one that defied me at every step, but age and persistance won in the end. So don't give up hope.

Bob
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Re: Removing rusted fuel filter

Postby Gary » November 24th 2010, 1:50am

I like the concept,but your cutting the fuel filter in haft with what??. :eek: :confused:
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Re: Removing rusted fuel filter

Postby tedanderson » November 24th 2010, 2:01am

To cut a fuel filter in half, I suppose that you will need to stat out with an icepick, an awl, or some sort of very strong sharp instrument that can pierce a hole in the filter to drain out any fuel and then let the residual evaporate. Then you can go around it with a manual hook type can opener or a pair of tin snips.
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Re: Removing rusted fuel filter

Postby RECox286 » November 24th 2010, 2:59am

OK, I left the "cut in half" to everyones imagination. Surely one would not think to grind it in half with a whizzer. I did mine with a hacksaw (very carefully) I suppose you could find other such sharp objects in the tool box, but I went the easy way. It is possible that a suitably sized pipe cutter would work just as well. I did mention the pitfalls of smoking near a leaky fuel line, did I not ?

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Re: Removing rusted fuel filter

Postby Gary » November 24th 2010, 4:19am

Bob,

I'll leave it here.The only way a cutting tool works is friction.Which is heat.

If you tubing cutter the fuel line and it is a CPI,all you need to do is use fuel injection type of rubber hose for a splice(high pressure type is different that regular fuel line) and a double the kind of clamps that have a center screw that applies pressure all around the splice.Then barred connectors on each side of the fuel filter to slide the rubber splice onto.
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Re: Removing rusted fuel filter

Postby RECox286 » November 24th 2010, 6:39am

I"m sorry, I thought the whole point was to try to save the plumbing, not make some non stock repair. My mistake.

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Re: Removing rusted fuel filter

Postby Gary » November 24th 2010, 7:07am

Bob,it's not you bud.I am the one who is saying to do it this way.
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Re: Removing rusted fuel filter

Postby binder [OP] » November 24th 2010, 5:11pm

I did soak it in liquid wrench and will try again today.

How wrong is it to just cut the pipes, put on some rubber fuel line and make do without a fuel filter?

But I would if possible like to keep all the plumbing.

Cutting it is not a bad idea either?
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Re: Removing rusted fuel filter

Postby tedanderson » November 24th 2010, 5:24pm

How wrong is it to just cut the pipes, put on some rubber fuel line and make do without a fuel filter?


Very wrong. :nono:

What you are suggesting is a good way to get home if you needed to do an emergency repair but it isn't something that you want to do as a permanent fix. If something got into your filter that caused it to not function, think about what would happen if it wasn't there.
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Re: Removing rusted fuel filter

Postby chevymaherchevymaher is online! » November 24th 2010, 5:26pm

They make inline fuel filters for rubber lines.Running it without filter could clog your injectors.Rubber lines work fine.Just get correct pressure and gas rated lines
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Re: Removing rusted fuel filter

Postby Phantom » November 24th 2010, 5:35pm

Making sure the rubber hose is identically matched to the fuel pressure of your system is important, TBI injection is 9 -14 psi ,,MPI , SFI and Gen 2 vans fuel pressure is near 60 psi , so the hose has to be rated to at least 60psi , most rubber hose it not rated that high and will burst spewing fuel if it cannot handle the pressure buildup, and can cause a fire, Short term Emergency use only
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Re: Removing rusted fuel filter

Postby paintdrying » November 24th 2010, 7:19pm

Those compression couplings work just fine. I personally would stay away from the rubber lines, but they might be just fine. My last chevy truck had this same problem and rock auto wanted like 100 dollars for all the factory lines, I used brake line and compression fittings because the connections were behind the tank and I never wanted to have to replace a rubber hose. There is a big difference between pb blaster and liquid wrench. I would use brake fluid before liquid wrench
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Re: Removing rusted fuel filter

Postby binder [OP] » November 24th 2010, 8:24pm

In the end the C/T retro fit had to do? Pipes twisted and had to be cut. Tow types of fuel line as mentioned at the C/T one for high pressure, they also had an identical filter that had compression fittings instead of threaded nut fittings.

Van is idling much better, oil gauge is steady ( the dropping oil pressure at stop lights was my first clue something was wrong and then the stalling happened soon afterward) and did not stall on the test run. Oil gauge stays steady , so will check the fittings in a week and hope it is OK?
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Re: Removing rusted fuel filter

Postby Gary » November 24th 2010, 11:05pm

Phantom wrote:Making sure the rubber hose is identically matched to the fuel pressure of your system is important, TBI injection is 9 -14 psi ,,MPI , SFI and Gen 2 vans fuel pressure is near 60 psi , so the hose has to be rated to at least 60psi , most rubber hose it not rated that high and will burst spewing fuel if it cannot handle the pressure buildup, and can cause a fire, Short term Emergency use only


Please read the post as stated.Fuel injection rubber hose is suggested and clamps rated to do the work.I found that at a NAPA store.
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Re: Removing rusted fuel filter

Postby Phantom » November 24th 2010, 11:44pm

Gary wrote:
Phantom wrote:Making sure the rubber hose is identically matched to the fuel pressure of your system is important, TBI injection is 9 -14 psi ,,MPI , SFI and Gen 2 vans fuel pressure is near 60 psi , so the hose has to be rated to at least 60psi , most rubber hose it not rated that high and will burst spewing fuel if it cannot handle the pressure buildup, and can cause a fire, Short term Emergency use only


Please read the post as stated.Fuel injection rubber hose is suggested and clamps rated to do the work.I found that at a NAPA store.

Please read post as stated ,,there are 2 different types of fuel injection systems Throttle Body injection , and Multi Port , Sequential fuel Injection which have different fuel pressure ratings
Why is you cannot handle someone agreeing with things , just saying it differently???
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Re: Removing rusted fuel filter

Postby Gary » November 25th 2010, 12:13am

I just had a thought.When info is posted already and you know that,move on to new suggestions.Mainly because that part of the topic has been covered already. :doh: :doh:

Least most of the forums I post to and have posted on operate that way. :banghead: :banghead: Gezzzzz.


Please accept the fact this is all one big family and we all might contribute one part of the puzzle to a repair.Really no need to repeat the same thing over again.

No ego's from here mind ya.Just contributing my part of the puzzle.

Hey-the peace maker hand stretched out to you:

Have a very Happy Thanksgiven.

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Re: Removing rusted fuel filter

Postby RECox286 » November 25th 2010, 12:44am

If the pipes twisted, then I hope you consider what ever you did to be a temporary fix until you can get the proper plumbing to make a permanent fix.

No egos hurt here, so not to worry. (1, 2, 3, ... 9, 10, ahhhhh!) Glad things are working better for you. But please fix it properly. Like Gary and I said: Fool ain't nothing to fuel with.

Bob
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Re: Removing rusted fuel filter

Postby Phantom » November 25th 2010, 1:35am

Gary wrote:I just had a thought.When info is posted already and you know that,move on to new suggestions.Mainly because that part of the topic has been covered already.
Gar

Gary sometimes more detail is needed , and it may be provided , sometimes posters are new to fixing autos and don't realize all the possibilities , so that it may be helpful to provide more detail rather than presume someone is familiar with all that is necessary . Example I went to the auto parts store and bought several items , I asked the counter person to get them for me , I ask for some power steering return line and after I got in my car and opened the bag to verify the contents I found that the counter person had given me heater hose instead of power steering hose, he didn't notice the difference. I have noticed that there has been times when I gave an answer to a threads question and there came more posters who came afterward and gave nearly the same answer only worded differently , It does not bother me at all and as a family we should all be welcomed\encouraged to have a say , promoting togetherness and not making it a competition to see who can answer first in order to offer an answer.
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