How to fix leaking 6.2 fuel filter housing? Or where to buy replacement? - Diesel Place : Chevrolet and GMC Diesel Truck Forums
 
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Old 10-20-2010, 09:17 AM   #1 (permalink)
chevyr20usaf
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How to fix leaking 6.2 fuel filter housing? Or where to buy replacement?

Well, I found the cause of my poor starting, it was a leak on my fule canister housing - problem is - I am not sure where exactly the leak is coming from on the housing.

For now I have bypassed the OEM fuel filter entirely with an inline filter, but I would like to get the original setup working again.

Does any one know if there is anywhere to get this serviced/checked if I send it away? I have not been able to track down a complete new item with the electrical parts, but have found the basic mounting on ebay.

I am thinking that a couple of the sensors that are attached to the housing may be leaking, but I dont know where to get these parts either - have tried LMC truck etc.

http://cgi.ebay.com/ebaymotors/ws/eB...K%3AMEWAX%3AIT

Anyone having a good used fuel filter housing with electrical items for sale please send me a PM!
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Old 10-20-2010, 10:03 AM   #2 (permalink)
Joeairforce
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It's probably your vac/restriction sensor that's leaking..... That's a common problem on these filter bases..... (It goes in the big circular area you see in the base you linked) I was able to fix mine by carefully pulling it out and replacing the o-ring on it..... Another fix is to just pull it out and tap the hole in the place for it and put a screw in the hole with something to help seal it up......

You won't find anything new for them because they were discontinued by GM a long time ago...... Only place you'll find a replacement is a junkyard or e-bay....... A lot of guys just replace it with a different fuel/water separator filter setup......
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Last edited by Joeairforce; 10-20-2010 at 10:04 AM.
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Old 10-20-2010, 10:10 AM   #3 (permalink)
chevyr20usaf
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awesome - I think that is exactly the problem! what else does the fule filter housing do? I have tried researching in my manuals and online but as it is old, I catn get a clear idea of what all the wires/hoses are for.

I will remove it and carefully see if I can replace that o ring - any special tips on where to get a replacement o ring?

Thank you so much.

Tom
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Old 10-20-2010, 10:20 AM   #4 (permalink)
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There's the vac/restriction sensor that is supposed to tell you when the filter is clogged, there's a heater (the wires that come out the top), and there's a WIF (water in fuel) sensor that tells you when you need to drain the water out of the filter...

I'd just go to Autozone or anywhere that sells o-rings and match one up.... (I just happened to have some extra o-rings laying around of which one fit when I did mine)
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Old 10-20-2010, 11:18 AM   #5 (permalink)
chevyr20usaf
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thanks v much Joe - very helpful! Will post again once I have had time to fix up the leaky seal.

Cheerio from an ex New Zealand AF Avionics Mechanic (1983-1985)
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Old 04-04-2013, 07:00 PM   #6 (permalink)
englishjimmyfan
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am still none the wiser!
who makes a repair kit for the 6.2 canister type main filter housing?
the one on the bulkhead.
you'd sell loads!
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Old 04-05-2013, 11:20 AM   #7 (permalink)
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Mine leaked from the small (5/16"?) welch/freeze plug on the side of the housing. Cleaned it up with acetone and plugged it with epoxy.

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Old 04-05-2013, 11:31 AM   #8 (permalink)
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Save yourself some grief and swap out the model 80 (squarebox filter) for a round spin on.
If one o-ring is leaking who's to say any other o-rings and gaskets aren't far behind.

There is no need for the heater, I ran this winter without it no problem and you can get round filters with a water drain.
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Old 04-07-2013, 09:15 AM   #9 (permalink)
englishjimmyfan
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people like lmc truck should devise a bolt in kit for both the box type and spin on canister type miain fuel filter.
its not rocket science for manufacturers/them-with CAD design and probably Chinese made would be cheap.
what size is the fitting (fuel in) on the round canister housing (25011537)? metric?
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Give yourselves a pat on the back !
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