Ok, so I had a leak in one of my fuel lines, so I replaced the line with another equal-length piece. I made absolutely sure that the line was reseated completely in the connector, then reattached to engine. Fixed the leak, or so I thought...

Yesterday was the first 100-degree plus day I've driven in since fixing the leak, and about 30 mins into my drive, I smell a LOT of raw fuel. Pulling over, I pop the hood and bam, there's fuel spurting out! Now There's so much coming out that I can't tell if it's coming from between the line and connector or the join in the connector itself. Since the engine's hot, I kill it to prevent a flash burn and then unscrew the line. everything looks fine, the line is still firmly seated in the connector, etc etc...

Any help? Should I replace the -6AN connector just to be safe?

 

Where is the fuel line that you replaced? Remember that you can damage AN fittings by over-tightening them they seal on the flare, and not on the threads. I have a an aeromotive fuel pump that accepts AN fittings but there aren't flares on the inside to seal, so I ended up having to run permatex on the threads to seal it. It all depends on where it seals, and where the leak is coming from.

 

With the help of a friend, I was able to fix the problem. Turns out when I tightened the fitting down, the threads were off a little and not tightened fully (but giving the impression that they were).