Carb Rebuild 1991 SN - Please HELP

Where at the rear bowl is it leaking from?

That's not a lot of help

Sounds like it's time to pull the bowl off to get a better look at things like gaskets and the seals for the bowl screws.

You're talking about an external leak onto the manifold right?

You also have the transfer tube with an O ring that can get pinched and leak/spray gas but that's at the top

Update - A friend told me to see if I can spin the transfer tube with my hand. Just so happens that I can spin the transfer tube. So maybe it is the O Ring to the seondary as you suggested? Maybe it got pinched?

Gary

Keno,

Yeah its not the plugs on the bowl. I am going to remove the transfer tube and inspect the O rings. I am guessing one is pinched as you suggested earlier. I can rotate the transfer tube by hand so its definitely loose. Also, I was at the key and by myself so I couldn't actually see it in real time, but it "appeared to be leaking from the bottom. If the O ring was pinched and fuel was pouring out of the bottom of the transfer tube on the back side, I am thinking it would run down and by the time I got back there to look it was dripping onto the manifold and looked like from the bowl. Does that make any sense at all? Also, it was A LOT of fuel which doesn't lean toward a "leak in the bowl gasket" but more like a blown seal at the tube. I will post back in a little while and let you know what I find on the O Ring.

Gary

KENO - Ordered a new tube anyway from summit. Seems like a better application and for $10 how can you not right. So here is what I found. I took apart the rear bowl and needle assembly and found pieces of a blown O ring (the first one that got pinched last night and I replace it) in the needle assembly. I tried to upload a pic, but forum isn't cooperating.. Nonetheless since the needle assembly wasn't working I am assuming the bowl filed to capacity and fuel leaked at the weakest point it found - O Ring at transfer tube. Going to get some new O rings until the new tubes arrive. Will keep ya posted. Thanks for the help.

Gary

Sounds like the needle valve was stuck open in which case the bowl will fill up and the leak path to make it an external leak is the bowl vent (J tube) which should direct the leakage down the secondary throttle bores but with fuel pump pressure and a good sized seat leak it'll spray a lot.

or do you mean the rear O ring was broken and you found it's parts in the needle and seat assembly?

Sorry I didn't answer your question. - The front O ring was broken yesterday and I guess it sent some parts of it to the rear if that makes sense???