fuel line fittings are a b!tch - Chevy and GMC Duramax Diesel Forum

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post #1 of 16 (permalink) Old 07-28-2010, 03:16 PM Thread Starter
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Angry fuel line fittings are a b!tch

im really struggling at getting the my fuel lines apart to install my airdog II. i looked around about what to and got the fuel line tools that look like this

whats the secret to getting the lines apart now??

Trevor
2004 GMC LB7
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EFILive, Stock Trans and DJM 3-5 drop
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post #2 of 16 (permalink) Old 07-28-2010, 03:22 PM
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they are a pain in the ass. just make sure you have the right size tool for the line and when you push it into the fitting make sure its in all the way to the collar. when its all the way in twist fitting tool around and try to pull the line apart. that usually works for me.

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post #3 of 16 (permalink) Old 07-28-2010, 03:29 PM Thread Starter
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ok thanks. putting this dam thing in is really frustrating me..the airdog instructions really suck. and im not the most patient person. The fuel lines are 1/2 inch right?

Trevor
2004 GMC LB7
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post #4 of 16 (permalink) Old 07-28-2010, 03:36 PM
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Those suck ass I tried using those and couldn't do it luckily my buddie had the actuall fuel line disconnect tool from snap on so much easier to use.
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post #5 of 16 (permalink) Old 07-28-2010, 03:47 PM
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the Lisle fuel line disconnect tools work the best in my experience. You can find them at sears.

You have to simualtaniously push the connector "in" and push the tool in, then once you push the tool in, pull the connector OUT.

Its tricky the first time you do it but once you've figured it out it takes 2 seconds to disconnect fuel lines.

ben

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post #6 of 16 (permalink) Old 07-28-2010, 04:36 PM
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Yes it is 1/2". The Lisle 39400 angled fuel line disconnect tools work great & were about $10.

Lisle Corporation

Push the tool all the way in to the flange & rotate the tool while pulling on the fuel line.

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post #7 of 16 (permalink) Old 07-28-2010, 05:38 PM Thread Starter
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ya i went out and bought a autocraft one too. i figured it would be stronger but i think ive already bent it past fixing. Maybe my lines are too rusted, idk, but i dont see how its possible with mine to push in from both ends.. i cant even get the wrench started in the first place. plus the added fun of being cramped under my truck with hardly even enough room to get the wrench in is really making me want to cry ha

Trevor
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post #8 of 16 (permalink) Old 07-29-2010, 10:00 AM Thread Starter
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bummppp

so i think my fittings are rusted and filled with road dirt past the point of getting off. I took it to a guy in town who had the listle tools and everything and we both couldnt get it off. 6 years of winter make these about impossible to pull apart is what i think. Sooooo my question is: In the instructions it says something about hooking it up straight to the top of the tank... would this work. Can i by pass all the lines and give the ones up top a try? I havent dropped the tank yet but i would guess that these fitings would be in better shape then the ones around the front of the tank??

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post #9 of 16 (permalink) Old 07-29-2010, 10:44 AM
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mine was a bitch too, swear a few more times and tug hard and it should come apart. my truck only had 30k on it when i did mine and they were still a major PITA

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post #10 of 16 (permalink) Old 07-29-2010, 07:20 PM
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They can be tough. Wiggle the fuel line around while pushing in on the lisle tool. If you are having alot of trouble, try pulling the bed off. Its only a few bolts and it'll make the job way easier.

06 LBZ EC/LB 4x4
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