How to get a fuel filter off--without rounding off the nut

Tiny
ANOTHERVIEW
  • MEMBER
  • CHEVROLET SUBURBAN
Car is 1997 Suburban 5.7L

I know how to change a fuel filter, and have done so.

I have also changed other things with steel lines and compression fittings such as camshaft driven fuel pumps, brakes, etc.

What I never want to do again is round off the nut holding the line onto--in this case the filter.

I am using a 5/8" line wrench, and it seems like it just does not want to turn. I have sprayed oil on it over some days, now. Different kinds. Today I bought a new can that advertises it is special penetrating oil.

I got to wondering if maybe it was metric. I did the conversion on the computer and 5/8 is between 15mm and 16mm. The 15mm wrench is too big.

Any advice?
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Saturday, February 17th, 2007 AT 4:06 PM

8 Replies

Tiny
CHEVYII
  • MEMBER
It should be standard and it really depends on what brand of tools you use, I have nothing aginst craftsman but their wrenches spread over time causing this problem, I found this out years ago and bought all snap on and mac tools since and never had that problem again try a good wrench if your not already
good luck
jim
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Saturday, February 17th, 2007 AT 4:29 PM
Tiny
SERVICE WRITER
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Try heating it with a torch.


http://www.2carpros.com/forum/automotive_pictures/30961_laughing_3.jpg



Okay maybe not....

Funny seems like sometimes there is a secret size out there that you never have. :roll:

I would go to a vise grip that is larger enough to adequately grab on, get a good bite on the flats, and turn it IN a touch and turn it OUT a touch, and back and forth until you get more and more movement.

There are line wrenches that are valuable
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Saturday, February 17th, 2007 AT 4:34 PM
Tiny
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Sorry you said line wrench. :Oops:
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Saturday, February 17th, 2007 AT 4:36 PM
Tiny
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I said the 15mm was too big. I meant that it was too small.

The 5/8 is a little wiggly (not much, though). My conversion shows 5/8 would be 15.875 mm. So, getting smaller would be 15mm, but that is too small.

I will probably try the vise grip pliers since someone mentioned it.

I had thought of that, but thought people usuially saved that for when the nut was already rounded.

OR, I could chicken out and take it to someone else and hold them responsible--but that seems like a mean thing to do, so I would feel like I would have to disclose why I was taking it to them.
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Saturday, February 17th, 2007 AT 6:44 PM
Tiny
MATHIASO
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Hey Paul! I didn't hear from you for a while.
Is everything ok?
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Saturday, February 17th, 2007 AT 8:42 PM
Tiny
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You can be sure when or if you chicken out that the mechanic will know why.


http://www.2carpros.com/forum/automotive_pictures/30961_skeptical1_4.jpg



And yeah i would save that for when the nut gets rounded, but if you can squeeze it on the flats you might be fine!
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Saturday, February 17th, 2007 AT 9:41 PM
Tiny
SERVICE WRITER
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Hey Mat!!!
Everythings is cool,


http://www.2carpros.com/forum/automotive_pictures/30961_fonzi_4.jpg


just taking 2 online upper level courses and have little time here.


http://www.2carpros.com/forum/automotive_pictures/30961_frown_2_3.jpg



Couldn't help out on the one post you sent....
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Saturday, February 17th, 2007 AT 9:44 PM
Tiny
MATHIASO
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I will be away for few days.
(I WILL BE BACK )
(Arnold S. The terminator ) :D
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Sunday, February 18th, 2007 AT 6:17 AM

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