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Fox BBK fuel rail leak on the end cap/plug.

  • Thread starter Thread starter Driver460sz
  • Start date Start date Dec 23, 2020

Driver460sz

5 Year Member
Jan 14, 2019
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New Hampshire
Dec 23, 2020
#1
  • Dec 23, 2020
  • #1
I contacted BBK that I have a set a fuel rails from them and the little end cap with the O ring leaks at pressure. They responded with "Sorry to hear that you have a leak - we would recommend trying a slightly larger O ring at the end under the disc." So, super helpful, thanks BBK. Has anyone struggled with this problem. Looking around I have seen some mention of it but nothing solid as to what worked. What O ring was used to complete a solid seal? Is there another end plug out there that works? I really would like this to work and not have to swap rails.

Thanks for any help and/or suggestions.

Scott
 

7991LXnSHO

wanna catch the space herp
10 Year Member
Sep 1, 2010
7,387
2,745
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Kearney, NE
Dec 23, 2020
#2
  • Dec 23, 2020
  • #2
This topic has popped up before. I do not remember a solution, so following.
 

ndfox92

Member
Mar 14, 2019
35
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Brooklyn, NY
Dec 23, 2020
#3
  • Dec 23, 2020
  • #3
have these rails on my built motor. remove the cap and allen head bolt. drill it out. tap it for a plug. put in plug with some sealant on threads. be done with it forever, ive had 0 leaks and it is the best thing you can do. problem solved.
 
Reactions: Driver460sz and General karthief

ndfox92

Member
Mar 14, 2019
35
12
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33
Brooklyn, NY
Dec 23, 2020
#4
  • Dec 23, 2020
  • #4
make sure its an npt plug as well.
 
Reactions: Driver460sz and General karthief

Driver460sz

5 Year Member
Jan 14, 2019
145
51
38
47
New Hampshire
Dec 27, 2020
#5
  • Dec 27, 2020
  • #5
7991LXnSHO said:
This topic has popped up before. I do not remember a solution, so following.
Click to expand...
BBK is sending me a few O rings to try out and see if it solves the problem. Here are the part numbers and I will take pictures of the packing when I get it. Hopefully it works and this helps someone else out as well.

CHD254 – 1pc

SCP217 – 2pc

HDW229 – 1pc
 

General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
Aug 25, 2016
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polk county florida
Dec 27, 2020
#6
  • Dec 27, 2020
  • #6
I like the pipe plug idea, less likely to leak later on.
 
Reactions: Driver460sz and 7991LXnSHO
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