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Old 07-20-2013, 09:13 PM   #1
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Default Changing fuel filter--2003. What size tap?

What size is the nut on the line that the fuel filter screws into? This is a 2003 leSabre

I'm trying to get a 16mm flange wrench and it doesn't want to fit on maybe because of layers of rust.
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Old 07-21-2013, 01:44 AM   #2
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Not sure of the size, I am sure somebody will be able to provided you with that info soon, I will say once you know the size, spray that nut with some penetrating oil like PB Blaster, and let it soak for a few hours, then spray it again, and wait for a few minutes before trying to break the nut free.
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Old 07-21-2013, 05:41 AM   #3
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I don't remember what it is either, but spray that connection now and keep spraying it.
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Old 07-21-2013, 09:04 AM   #4
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16 sounds right, sometimes you need to use a file or wire brush to get to good metal. sometimes you need to use a good pair if vise grips to break it loose, aside from the mentioned rust penetrantes
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Old 08-15-2013, 10:56 PM   #5
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I use a 5/8 line wrench....works just for for me
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