Fuel filter - Home made? - JeepForum.com

 
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post #1 of 8 Old 04-28-2014, 01:56 PM Thread Starter
ProdigalJeeper
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Fuel filter - Home made?

1979 CJ5 w/ original IL6 ... The attached pic shows a homemade(?) fuel filter (or possible water trap?) zip tied to the fuel pump installed by a previous owner as I did not put it there. One can see the feed line from the fuel tank going into the bottom of the filter and then it comes out the top and does a complete loop before entering the fuel pump. Also, there is a factory in-line fuel filter between the pump and the carburetor ... Has anyone seen something like this before? I'm guessing this was installed to combat rust in the gas tank but I really don't know.

Any ideas on where to find a replacement or should I just install another in-line filter in its place?

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post #2 of 8 Old 04-28-2014, 02:13 PM
bptactical
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Not home made, just a generic aftermarket filter.
The zip tie to the pump is a bad idea, vibration will eventually cause the filter to wear into the pump and leak, sometimes with catastrophic results.
Rubber line is also a bad idea, it will allow the fuel to expand and boil, causing vapor lock issues.
Normally there is a sock filter on the pick up in the tank so a pre pump filter is usually unnecessary.
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post #3 of 8 Old 04-28-2014, 02:15 PM
WindKnot
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Just a generic inline fuel filter. There are plenty of us who would LOVE to delve into the mind (does he indeed have one? ) of the previous owner of our Jeeps.

He may not have realized that the "funny thingy with the two outs" is the fuel filter. He may have cut that see through filter in to see if his tank was rusty. Who knows what lurks in the minds of those before us?

It isn't hurting anything as long as it's clean. I'd be more concerned about the excess length of the fuel line.

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post #4 of 8 Old 04-28-2014, 05:43 PM
Ken4444
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If the Jeep is in such condition that a second fuel filter is needed in addition to the correct one, then it's got other problems that should be fixed like a damaged sock on the fuel sending assembly, or an excess of debris in the gas tank.

"I give you a republic, if you can keep it." - Benjamin Franklin
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post #5 of 8 Old 04-28-2014, 07:53 PM Thread Starter
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Quote:
Originally Posted by Ken4444 View Post
If the Jeep is in such condition that a second fuel filter is needed in addition to the correct one, then it's got other problems that should be fixed like a damaged sock on the fuel sending assembly, or an excess of debris in the gas tank.
Wondered that myself. Just bought this CJ in March so I'm slowly learning its secrets ...
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post #6 of 8 Old 04-28-2014, 08:09 PM
Ken4444
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Quote:
Originally Posted by ProdigalJeeper View Post
Wondered that myself. Just bought this CJ in March so I'm slowly learning its secrets ...
There are plenty of secrets, but nothing impossible to learn. If you stick around here from time to time you'll start to read about the more common problems and their fixes.

"I give you a republic, if you can keep it." - Benjamin Franklin
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post #7 of 8 Old 04-28-2014, 08:25 PM
LumpyGrits
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Quote:
Originally Posted by Ken4444 View Post
If the Jeep is in such condition that a second fuel filter is needed in addition to the correct one, then it's got other problems that should be fixed like a damaged sock on the fuel sending assembly, or an excess of debris in the gas tank.
I have run a large canister type filter before the FP for decades.
Just keeps crap out of the FP that the 'sock' lets by.
LG

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post #8 of 8 Old 04-29-2014, 05:28 AM
Mike Romain
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The ethanol in modern gas carries water in it. This water rusts out the stock jeep steel gas lines (and tank) so you can get rust coming from the lines despite the sock filter in the tank. The new gas line i bought at napa is plastic coated inside to prevent this. It came in screw together pieces of various lengths. Same deal for the stock rubber lines, ethanol makes them go rock hard and crack.

Mike
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