I installed a new fuel pressure gauge today and I think i cut my boost tubeing when i cut the hole in the fire wall what can I use to fix it? it is currently 1/8 in. O.D air brake tubing. If you think it could be something different let me know, please.
Frank

 

Either replace the line or use an 1/8'' compression coupling to repair it.
If you use the coupling, be sure to tie it to something so that its weight is supported and not flapping around.

 

when I did my gauge install I used the same 1/8 th" air line. however I slid it thru a long piece of 1/4" air line for a double layer of protection