LS - 4th Gen (2007-2017) Discussion topics related to the current flagship models LS460, LS460L and LS600H

460 Passenger side fuel pump gasket replacement

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Old 12-25-23, 04:17 PM
  #76  
Striker223
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The TQ wrench strikes again.....you will need to extract and replace that.
Old 12-25-23, 06:52 PM
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Biyiklik
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Default Broken nut

Originally Posted by Striker223
The TQ wrench strikes again.....you will need to extract and replace that.
will jb weld work on the studs? I dont think i can do the stud change
Old 12-26-23, 06:55 AM
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Originally Posted by Biyiklik
will jb weld work on the studs? I dont think i can do the stud change
No, it will need to be at minimum drilled down and a helicoil added
Old 12-26-23, 08:38 AM
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Originally Posted by Striker223
No, it will need to be at minimum drilled down and a helicoil added
R u telling me that i have to drill into the current stud and take it out?
Old 12-26-23, 09:54 AM
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Originally Posted by Biyiklik
R u telling me that i have to drill into the current stud and take it out?
Yes. Or buy a new valve cover, you will destroy the pump if you attempt to use one screw....and that's best case scenario. Worst case you crack the cam or launch the pump off and cause a major fuel leak.
Old 12-26-23, 01:38 PM
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Originally Posted by Striker223
Yes. Or buy a new valve cover, you will destroy the pump if you attempt to use one screw....and that's best case scenario. Worst case you crack the cam or launch the pump off and cause a major fuel leak.
I am not a pro mechanic or so but i used the car couple times and there is no leak.I used jb weld to get the broken piece together and also used to hold the stud and pump together.Will put the screw after it cures well.Here are some pictures.I dont feel like i will destroy the pump nor the engine.Did you have any experience with that you are so sure on this?




Old 12-26-23, 01:46 PM
  #82  
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The repaired area has no clamping force on it and when the nut is installed It has a good chance of breaking all that JB weld off. I would say there's a poor chance of that repair lasting very long.
Old 12-26-23, 02:20 PM
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Originally Posted by Gerf
The repaired area has no clamping force on it and when the nut is installed It has a good chance of breaking all that JB weld off. I would say there's a poor chance of that repair lasting very long.
Yes and No.I also filled the inside to make connection for broken side.Is it easy to get the stud out and replace with new one?
Old 12-26-23, 02:58 PM
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Can someone share if there is any document or video about it?
Old 12-26-23, 03:40 PM
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Originally Posted by Biyiklik
Is it easy to get the stud out and replace with new one?
Not really, the pump will have to be removed and I believe the studs go into the upper cam housing by the looks of it. once the pump is out hopefully there is some stud left to grab with some appropriate size of visegrips and remove..I would never drill in that area without taking the valve cover off and covering everything in sight.

If you don't feel comfortable doing that I would strongly recommend finding someone with some experience to do the job.
Old 12-26-23, 05:38 PM
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This is absolutely amazing. JB welding a freaking cam driven HPFP that has two studs holding to the cam. Astounding
Old 12-26-23, 08:56 PM
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Originally Posted by Striker223
This is absolutely amazing. JB welding a freaking cam driven HPFP that has two studs holding to the cam. Astounding
You dont need to tease us.I have only one stud that is the problem and use the jb weld.If it will not work the.l will look into changing the stud
Old 12-27-23, 08:16 AM
  #88  
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Originally Posted by Biyiklik
If it will not work then l will look into changing the stud
Here's an Ebay picture so you can see how drilling in that area might not be a good idea for you.




Old 12-27-23, 10:30 AM
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If you run a vacuum there won't be an issue drilling only deep enough to get a helicoil in to hold a replacement. I've done it a few times on BMW valvetronic motor bases when the fasteners snap lol!

This is very similar but I would still encourage extreme caution
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