My injector lines are leaking a little where the line goes through the nut. Is there a seal or something inside the nut? If so what are they called and where do I get them?

 

Can you post a picture? It could be a few different things. It is likely a bad return cap seal, but a picture could help us diagnose.

 

I'll see if I can get one tomorrow. I know the nuts are tight. It's not sraying fuel. Its more like bubbling

 

There is no seal, the seal is on the taper of the line to the injector or pump. You can try loosening and tightening while wiggling the line. If a try or two of that does not fix it you either have some junk between the injector and hard line in the flare/taper or the line is cracked. If you do not have vibration dampener clamps on all the lines, the line will crack and they tend to crack right under the nut before the flare.

 

That's what I was afraid of. I do have the vibration dampeners. I guess I'll try wiggling and cleaning.