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Old 07-18-2009, 06:46 PM   #1
theholycow


 
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Exclamation HELP! Fuel line nut rusted, can't remove fuel filter

On my 2002 GMC, the fuel line nut is rusted to the fuel filter (or maybe to the line; probably both) and I can't free it. I've done lots of whacking with hammers, PB Blaster, Shimano penetrating oil, cold spray, and plenty of brute force.

I've gotten under and sprayed it with the Shimano stuff every day for a week. I just got the PB Blaster today.

I don't think I can reasonably heat it, nor grind off the filter's nut, since I'm working with fuel line.

Any other ideas? It's starting to look like I'll have to replace the fuel line. :(
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Removing weight has surprisingly little effect on fuel economy
Engine break-in procedure | Gear ratios
2002 GMC Sierra 4x4 5.3 (190,000 miles and going strong)
1980 Buick Lesabre family heirloom with 36,000 miles
2008 Volkswagen Rabbit 2 door I5-2.5 5spd DD lease
Quote:
Originally Posted by CamaroSpike23 View Post
she really underestimates the damage i would do to her reproductive organs
http://allOffTopic.com is the place for all the naughty stuff you can't get away with on this forum...
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Old 07-18-2009, 07:07 PM   #2
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Quote:
Originally Posted by theholycow View Post
On my 2002 GMC, the fuel line nut is rusted to the fuel filter (or maybe to the line; probably both) and I can't free it. I've done lots of whacking with hammers, PB Blaster, Shimano penetrating oil, cold spray, and plenty of brute force.

I've gotten under and sprayed it with the Shimano stuff every day for a week. I just got the PB Blaster today.

I don't think I can reasonably heat it, nor grind off the filter's nut, since I'm working with fuel line.

Any other ideas? It's starting to look like I'll have to replace the fuel line. :(
Some great quotes in your Tags. Idk? Replacing fuel line sounds best.
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Old 07-18-2009, 07:23 PM   #3
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I think you are not using enough elbow grease. you are turning the nut the correct way and holding the other one still correct? (jw.)
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Old 07-18-2009, 07:39 PM   #4
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Good thoughts. I am holding one and turning the other, and doing it all in the correct direction -- unless it's reverse threaded, but the new filter isn't so the parts store or Purolator would have had to make a mistake. I'm using plenty of elbow grease (so much that I'm afraid that even the flare wrench will round the nut).

I was able to remove the front/outbound connection, but the rear/inbound connection won't budge at all.

I'm posting on every forum I use, out of desparation...I did get one good suggestion on another forum: Since I may have to give up and declare that fuel line a loss, maybe I could remove said fuel line still attached to the filter and work on it while it's not attached to the truck. Then I could clear it of fuel and use heat.
__________________
Removing weight has surprisingly little effect on fuel economy
Engine break-in procedure | Gear ratios
2002 GMC Sierra 4x4 5.3 (190,000 miles and going strong)
1980 Buick Lesabre family heirloom with 36,000 miles
2008 Volkswagen Rabbit 2 door I5-2.5 5spd DD lease
Quote:
Originally Posted by CamaroSpike23 View Post
she really underestimates the damage i would do to her reproductive organs
http://allOffTopic.com is the place for all the naughty stuff you can't get away with on this forum...
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Old 07-18-2009, 07:53 PM   #5
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Let the penetrating oil sit on it for an hour or so. That should loosen it. I used Ballistol as a penetrant on my '02 Silverado fuel filter nut this year. Came right off.
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Old 07-18-2009, 07:57 PM   #6
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Quote:
Originally Posted by theholycow View Post
Good thoughts. I am holding one and turning the other, and doing it all in the correct direction -- unless it's reverse threaded, but the new filter isn't so the parts store or Purolator would have had to make a mistake. I'm using plenty of elbow grease (so much that I'm afraid that even the flare wrench will round the nut).

I was able to remove the front/outbound connection, but the rear/inbound connection won't budge at all.

I'm posting on every forum I use, out of desparation...I did get one good suggestion on another forum: Since I may have to give up and declare that fuel line a loss, maybe I could remove said fuel line still attached to the filter and work on it while it's not attached to the truck. Then I could clear it of fuel and use heat.
you are reorienting yourself when you switched to the other side right?

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I piss excellence
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But not all people were born awesome like you, Spike.
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Old 07-18-2009, 08:02 PM   #7
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Yup, I am reorienting myself to make sure I'm turning stuff in the correct direction.

I've let the penetrating oil soak in repeatedly, daily for the last week. :(

Anyone know where I can look up my fuel line part number online and maybe order it? Rockauto.com doesn't seem to list it.
__________________
Removing weight has surprisingly little effect on fuel economy
Engine break-in procedure | Gear ratios
2002 GMC Sierra 4x4 5.3 (190,000 miles and going strong)
1980 Buick Lesabre family heirloom with 36,000 miles
2008 Volkswagen Rabbit 2 door I5-2.5 5spd DD lease
Quote:
Originally Posted by CamaroSpike23 View Post
she really underestimates the damage i would do to her reproductive organs
http://allOffTopic.com is the place for all the naughty stuff you can't get away with on this forum...
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Old 07-18-2009, 08:05 PM   #8
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Quote:
Originally Posted by theholycow View Post
Yup, I am reorienting myself to make sure I'm turning stuff in the correct direction.

I've let the penetrating oil soak in repeatedly, daily for the last week. :(

Anyone know where I can look up my fuel line part number online and maybe order it? Rockauto.com doesn't seem to list it.

www.gmpartsdirect.com

(and I believe they are offering a discount to Camaro5 members)

*edit* here it is...
http://www.camaro5.com/forums/showth...ighlight=parts
__________________
Never race anything you can't afford to light on fire and push off a cliff
A group as a whole tends to be smarter than the smartest person in that group until one jackass convinces everyone otherwise.
Quote:
Originally Posted by BowtieGuy View Post
Nobody makes CamaroSpike happy. You just disgust him a little less than other people.

Quote:
Originally Posted by WheelmanSS View Post
Post count is truly an accurate measure of how cool someone is on the Internet.
Quote:
Originally Posted by Greg Norris View Post
I piss excellence
and fart awesomeness
"You can think I'm wrong, but that's no reason to quit thinking.”
Quote:
Originally Posted by Overflow View Post
But not all people were born awesome like you, Spike.
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Old 07-18-2009, 08:28 PM   #9
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Already checked gmpartsdirect.com - the fuel system parts categories they offer are:
Cap, Connector hose, Filler pipe, Fuel pocket, Fuel strainer, Fuel tank, Heat shield, Module, Pressure sensor, Seal, Sending unit, Strap
If I click "Connector hose", which is the closest to being a hard line in that list, it says No items were found in this catagory. A search for "fuel line" returns nothing.

I guess I have to wait for a dealer to be open. Damnit, I want instant gratification!
__________________
Removing weight has surprisingly little effect on fuel economy
Engine break-in procedure | Gear ratios
2002 GMC Sierra 4x4 5.3 (190,000 miles and going strong)
1980 Buick Lesabre family heirloom with 36,000 miles
2008 Volkswagen Rabbit 2 door I5-2.5 5spd DD lease
Quote:
Originally Posted by CamaroSpike23 View Post
she really underestimates the damage i would do to her reproductive organs
http://allOffTopic.com is the place for all the naughty stuff you can't get away with on this forum...
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Old 07-18-2009, 08:34 PM   #10
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Hit the local salvage yard. Might even be able to find an online salvage that has one.

Call your local junkyard and ask for the part with your vehicle info. They normally can tell you if they have the lines in stock.
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Old 07-19-2009, 12:38 AM   #11
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Quote:
Originally Posted by theholycow View Post
Good thoughts. I am holding one and turning the other, and doing it all in the correct direction -- unless it's reverse threaded, but the new filter isn't so the parts store or Purolator would have had to make a mistake. I'm using plenty of elbow grease (so much that I'm afraid that even the flare wrench will round the nut).

I was able to remove the front/outbound connection, but the rear/inbound connection won't budge at all.

I'm posting on every forum I use, out of desparation...I did get one good suggestion on another forum:

Since I may have to give up and declare that fuel line a loss

, maybe I could remove said fuel line still attached to the filter and work on it while it's not attached to the truck. Then I could clear it of fuel and use heat.
If it may be a loss anyway, why not try a medium size pair of Vise-Grips on the line nut, and the filter nut. A little impact from a hammer on the tool has worked for me.

They also make fuel line repair kits that may help.



http://www.summitracing.com/parts/RN...3/?image=large

Quote:
They feature factory-style connections, so installation is easy. Available in a variety of sizes and styles, Dorman fuel line repair kits will replace broken, cracked, or damaged OEM fuel line connectors.
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Old 07-19-2009, 06:49 AM   #12
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I'm not sure how vise-grips would help. My flare wrench has a good grip on the nut already and I've tried hitting it with a hammer.

I would consider the repair kit but I think it requires a few inches of straight line where it can be cut and spliced; my line has a bend right next to the filter. It looks just like the image that Spike posted above, and it's the left side of that image that I can't get undone.

In that image, the small nut is around the line and should turn freely of the line; the large nut is welded to the filter body. Unfortunately, you can't just crank the hell out of one nut; doing so will twist the whole assembly and break the line. You have to hold one nut and turn the other (or turn them against eachother).

I'm using proper flare wrenches:

which provide a good grip that won't slip or round the nut. I've managed to brace it against the frame in such a way that I can whack it with a hammer to make it turn and it didn't seem to get anywhere.
__________________
Removing weight has surprisingly little effect on fuel economy
Engine break-in procedure | Gear ratios
2002 GMC Sierra 4x4 5.3 (190,000 miles and going strong)
1980 Buick Lesabre family heirloom with 36,000 miles
2008 Volkswagen Rabbit 2 door I5-2.5 5spd DD lease
Quote:
Originally Posted by CamaroSpike23 View Post
she really underestimates the damage i would do to her reproductive organs
http://allOffTopic.com is the place for all the naughty stuff you can't get away with on this forum...
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Old 07-19-2009, 06:51 AM   #13
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When you say you are using penetrating oil, I hope you are not using WD-30 :LOL:
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Old 07-19-2009, 07:18 AM   #14
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No he mentioned PB blaster, which is the best one imo, in his OP.

If that does not work no juice will. Either brute force or replace lines.
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