Hello everyone,

I'm new here and I'm trying to fix my wife's 2007 Dyna Low Rider. I tried to drain the gas tank by disconnecting the fuel line (pictured). D/c-ing the fuel line didn't work, and neither did popping off the black piece (pictured), so I undid a rather gigantic bolt (picture 2) with my pliers. This enabled a dribble of gas to get out. So I got it drained, got the bike up and running, but there is still a slow leak that appears to be coming from the join between the chrome piece and the black piece. I retightened the gigantic bolt fully. Did I maybe lose a washer or something that is causing this leak? Because the black piece seems to join with the chrome piece rather snugly.




black bit and chrome bit



gigantic bolt that I loosened (attached to chrome bit)

 

If you want to drain the tank, use the cross under hose at the front/bottom of the tank. The hose you took off is just the supply line to the fuel rail. First thing I'd do is loosen the bolt slightly, then torque to the spec in your service manual. If it still leaks, replace the gasket/washer (not sure which kind of seal they use, but probably a rubber washer, or similar)

 

There is a small o-ring inside the chrome piece that probably got torn. Kind of a pain to replace, but inexpensive.

 

Is the tank still dripping with the quick release removed like you show in your first photo? Then it's the o-ring under that hex flange.
Is so, you need the gasket form Harley. If you are actually referring to the lower coupling now leaking, there are two o-rings up in that fitting. They roll out but you need to be gentile. You can easly damage it. Harley has a $100 tool just to install those two rings but it can be done without it. Just don't nick or scratch metal or damage rings. If all you have is pliers, you are in over your head and should pay someone qualified to work on your bike. Dripping gas on a hot motor can get you or someone else killed.

If it the two o-ring, if you do not pull fuel pump fuse and run to kill the 65 lb pressure on the line or let bike sit overnight so pressure dies, when you lift on the disconnect to split line, the rings blow into the wrong position and then when you reconnect it, it leaks.

 

The first thing that he should have done would be to buy a Service Manual for the bike!

 

I Second that

 

the leak is not coming from the quick disconnect, it's coming from above it. the hex o-ring has been mangled some way or another. replace the oring. pull the tank.

fun times and hard lessons.

 

Is your wife impressed with your knowledge and terminology?

 

​​​​​Since you don't know the names of the parts, I assume you don't have a service manual.
You're probably breaking more than you're fixing.

I take my bike to an Indy because I don't feel like making your kind of mistakes. If I had a talented mentor I would work on my bike. Do you have any friends that could help you?

I had a leaking disconnect replaced on my '03 FLHTCUI. Some recommend just replacing the tiny O-ring instead of replacing the whole piece, but that's a frustrating procedure. I tried doing it on my old disconnect, it's tough.

Good luck.

 

I experienced the same thing with my son's 2004 Low Rider...I just could not get it to stop leaking after spending many hours on it. Ended up replacing the check valve...$50 and a couple of hours work, no problems since.

Sometimes just replacing is cheaper in the long run.