Parminio
Well-Known Member
So I once again have the bike running great, handling great and braking great but I can not for the life of me find out where this fuel leak is coming from. I'm at my wits end. I'm beginning to think it's the gas tank itself, that it somehow has a hole in it.
For the record: it's is mirror finish clean on the inside. Not one spec of rust anywhere.
Looking up top at the fuel filter and line to the tank, everything is bone dry:
Something I did notice that was that it was rather wet in the cup around the gas cap. I knew I had spilt a little bit of Seafoam when I added it, but I don't remember spilling that much of it. So I pulled all that off and it looks a little suspect. There's some moisture all around where that cup goes over the snout on the tank. The red outline is where it's moist. It's bone dry on the passenger side (the high side when it's on the kickstand).
I also noticed that the gas cap seal was soaking wet with gas. I've never really paid attention to it until now, but I don't recall ever seeing it that way before.
So now we come to the actual dripping I can see happening in real time. Here's a short video I did of two drips. I then stood up to do a quick once over of the top area so you could see how dry it is, so the gas can't be coming from there.
So on this picture, those drops land on the back side of this area, then follow the frame down and wind up dripping off right where you'd expect a leaking clutch slave to be dripping.
And here's how much gas has leaked out of it since last night - probably about 3 ounces. There are other very small spots that have dripped off before it got to that point, but the spots are so small (about the size of a quarter) I don't think it's really that much more.
Here's the best shot I could get of the front side of the tank (you actually get a better look at it on the video if you go full screen). The wetness seems to go about half way up. It goes almost all the way across but seems to be a bit heavier on the "driver" side of the bike.
I am at a complete loss.
Thanks in advance for any advice.
For the record: it's is mirror finish clean on the inside. Not one spec of rust anywhere.
Looking up top at the fuel filter and line to the tank, everything is bone dry:
Something I did notice that was that it was rather wet in the cup around the gas cap. I knew I had spilt a little bit of Seafoam when I added it, but I don't remember spilling that much of it. So I pulled all that off and it looks a little suspect. There's some moisture all around where that cup goes over the snout on the tank. The red outline is where it's moist. It's bone dry on the passenger side (the high side when it's on the kickstand).
I also noticed that the gas cap seal was soaking wet with gas. I've never really paid attention to it until now, but I don't recall ever seeing it that way before.
So now we come to the actual dripping I can see happening in real time. Here's a short video I did of two drips. I then stood up to do a quick once over of the top area so you could see how dry it is, so the gas can't be coming from there.
So on this picture, those drops land on the back side of this area, then follow the frame down and wind up dripping off right where you'd expect a leaking clutch slave to be dripping.
And here's how much gas has leaked out of it since last night - probably about 3 ounces. There are other very small spots that have dripped off before it got to that point, but the spots are so small (about the size of a quarter) I don't think it's really that much more.
Here's the best shot I could get of the front side of the tank (you actually get a better look at it on the video if you go full screen). The wetness seems to go about half way up. It goes almost all the way across but seems to be a bit heavier on the "driver" side of the bike.
I am at a complete loss.
Thanks in advance for any advice.
