can't fix leaking injector at fuel line

[srgtlord]

What you "could" do it run a slight bit of teflon tape on the threads. You not "Suppose to" but if you are careful and tape the lower threads you should be all set.

[ORCoaster]

Wow, having worked in a fittings warehouse in the past we would occassionally see a batch of rejects come out with a dab or burr of metal on the inside of the nut.  Could the new lines have a blob of plating that is keeping the face of the injector from flushing up to the new fuel line?  Or the top of the line and bottom of the nut. 

Streams of fuel really indicate a major disconnect with the nut, line and injector.  Threads not worn, new nuts and lines?  Time to look at quality of product I'd say.

Only saw it rarely, but it did happen.  Sorry no pics, this was 35 years ago now. 

[neimis]

Yay! Success!

First of all thank you to everyone who replied. Special thanks to ORCoaster - your idea did the trick. In case anyone else runs into the same problem, here is the fix:

I removed the injector, inspected the sealing surface with a magnifying glass. Didn't see any obvious nicks or gouges, but there were some questionable spots. I took a ball bearing of the appropriate size, some 2000 grit sandpaper and light lubricating oil (3 in 1) and started polishing. I kept the injector sealing surface always pointed down so that any grit or debris wouldn't fall into the injector.

By the time I was done, the surface was polished and smooth - under the magnifying glass it looked very very good. Always keeping the polished side down, I swirled it many many times in a cup of kerosene. A fair amount of grit and debris came out. Kept doing it till I was satisfied nothing more would come out. Reinstalled the injector with a new heat shield, crossed my fingers, and started her up. Success!

Thanks again to ORCoaster. Neil

[burn_your_money]

Good to hear you were successful. Thanks for letting us all know what worked.

[ORCoaster]

Your welcome.  Glad some of my ideers work some of the time.  I figured it needing polishing to make what ever was causing the seal trouble to go away.