Finally got the stainless SOR EGR pipe to fix the classic leak that I've read so much about. With a pipe wrench and lots of PB Blaster I went to work. I've applied blaster to the nut and let it sit for almost 24 hrs. Went out this morning and gave it a tug, and it still isn't budging. Is is a reverse thread or something? It's not budging. any advice?
EGR nut won't budge
- Thread starter Overland84
- Start date
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Cruiserdrew
On the way there
You have to get the cooler and the pipe out of the truck, put it in a vise, and turn the nut with a really big wrench. I had to use a big pipe wrench. What you are experiencing is normal.
- Thread starter
- #3
I'm aware that this is normal, but I've been spraying and putting all my weight under this pipe wrench I have, and nothing. I've even got a nice black eye from when the wrench slipped and I smashed my face on the front differential. Any tips before I take her into a shop?
Cruiserdrew
On the way there
Since the old pipe is now trash,just cut it off and put an impact on the nut. That should back that out. I think there is enough room to get it in there.
35inchoverdrive
Forge Specialties
You could try hitting it with a little heat from a propane torch.
X2 on the heat -- Get the thing red hot and spray again w/ PB Blast -- Repeat -- Give it a few days of treatment like this. 20+ years of rust has fused that nut in there. Mine came undone after a week of heat and kroil. Regular thread.
Cutting the tube and using an impact is a good idea. Wish I'd done that.
Cutting the tube and using an impact is a good idea. Wish I'd done that.
Before you get a torch under there, look to make sure there is no oil around.
I have an EGR in case you ruin yours.
I have an EGR in case you ruin yours.
Mapp gas- Thread starter
- #9
I should heat the cooler, around the threads, correct? Also, I'm looking under there and notice that there is about 1/2 inch of threads already showing, is that normal?
Butt Ugly Chuck
Fish Biologist
Worst part of the job is that nut. Good advice above. I used heat, PB blaster, put my cooler in a big vice, and used a BIG wrench with a pipe on the end of that. I thought the cooler was going to break before I got the nut off but it finally budged. I simply CANNOT imagine getting that thing off with the cooler still on the truck unless there's room for the impact trick above.
Stay with it! The SOR pipe cured my persistent leak.
Butt
Yes - Heat the nut. Threads showing is normal.
