Sealing an Outlet Tube in Air Box

[Phantom Kat]

I've got a 1991 Katana 750 that I've recently replaced the throttle cable on. During the process I found that one of the outlet tubs in my air box has come loose and I'm afraid it's creating a leak which is causing the bike to run like crap ... in fact once it's warmed up it won't stay running. Can someone recommend an adhesive I can use to seal that tube into the air box?

[waffenampt]

What tube are you talking about? The tube that connects the carb to the airbox?

[Black_peter]

There are two tubes;
One from the valve cover breather box to the top of the air box. That really should be connected.
Second from the base of the air box, this is a drain. The tube should lead to the bottom of the swing arm area with the rest of the hoses. This hose needs to be capped, you remove the cap to drain build up water and oil from it. Neither should need adhesive, but they should have spring clamps.

[Phantom Kat]

What tube are you talking about? The tube that connects the carb to the airbox?

Yes, the tube that connects the carb to the airbox. There appears to have been some type of adhesive there at one time. I'm trying to avoid having to find another air box.

[Black_peter]

Ohhh the intake boots!
I think they only glued them to keep them from rotating. Any leaks there would have a minimal effect on carburetion..

[waffenampt]

Thos rubber boots have two rubber lips. The air box hole goes in between the two lips. I used super weatherstrip adhesive to seal them on mine. Its a yellow looking adhesive and is gasoline resitant.

[Black_peter]

If you're going to glue then make sure you line up the marks..

[Phantom Kat]

Okay ... so perhaps I have a bigger problem than I thought. I hear a hissing on one of the cylendars when the bike cranks (that's the best description I have). I will have to pull it apart again and see if I can see where I screwed it up lol. I'm still in the learning process, and this is pretty much how I first learned how to fix computers.

[Rowdy]

is the vacuum hose running from the back of your petcock to the port on the side of carb 4?

[BigDub]

Check your spark plugs to see if one is loose. You could have gotten too hot an burned a head gasket. Check the easy stuff first.

I bought an alternator before replacing a battery once. I bought a clutch release assembly once when all I needed was to replace the clutch release pin.

Take the time to try to diagnose properly before buying parts. Try starting your bike then spraying some carburetor cleaner where you here the leak and see if you notice any increased rpms. If so, start your dig where you were spraying the carb cleaner. Be sure to use the tiny red plastic straw so you can point to a very distinct point when looking for the leak/sucking sound.

Let us know what worked when you finally get to the bottom of it!

Get er done

walt