Carburetor Tees

[Sparky84]

So they Y piece is good, no cracks, I cleaned tubes and held ends in boiling water hoping the ends may revert back to their normal size  ,  no leaks now.
Back to leak test and found no more leaks   but there is fuel in the Main Air Jet  
Is this normal as I wouldn't think it was and on the drawing it states Air goes in, unless when it sits a capillary action occurs and fuel does go up that small pathway?
Getting closer I hope to fitting them back on.

[balky1]

I don't understand why you didn't replace those hardened fuel lines? I guess it is your risk.... Hardened rubber cracks easily and there are some constant vibrations, not to mention the heat.

[Sparky84]

I don't understand why you didn't replace those hardened fuel lines? I guess it is your risk....

That's not the problem at present....... lines seem good. If I could buy the replacement of what I have maybe I would but I cannot...... (I would definitely like a quick connector and longer fuel line to make removal of tank a lot easier.)

The main  problem was o-rings as depicted above and now I need to know if there should be fuel visible in the Main Air Jet at or not after it sits there doing nothing which has nothing to do with the fuel lines

Cheers Alan

[balky1]

If your lines start leaking at connections just because of a small wiggle than that rubber is shit. Just remember what you found on the Ts that leaked after wiggling.... A meter of fuel line costs les than 2 USD in Croatia (a meter and a half is more than enough to change it twice) so I don't think it is any more expensive over there? I mean, to risk the fuel leaks for such money? Your call I guess. But in the end, you are the one that will be removing all that once again, probably soon, to replace the lines. Half measures get you nowhere. This is just a good will advice, don't get me wrong.
On the longer lines... Hmmm, I wander if that will work on an '84? There's no space under the tank when you lower it in place to acommodate more line without pinching or kinking I think.

[Pat Conlon]

but there is fuel in the Main Air Jet  
Is this normal as I wouldn't think it was and on the drawing it states Air goes in, unless when it sits a capillary action occurs and fuel does go up that small pathway?

Due to valve overlap, there is a fuel mist that normally comes out of your carbs (on the inlet side)....the same fuel mist that play's havoc with K&N filter pods by washing away the filter oil on the cotton.
From this fuel mist, you may notice a residue of fuel on the air jet orifices, nothing to worry about.
If you're dripping fuel out of the air jets....then yes, you've got a problem.

Please be safe with your fuel lines...

[Sparky84]

From this fuel mist, you may notice a residue of fuel on the air jet orifices, nothing to worry about.
If you're dripping fuel out of the air jets....then yes, you've got a problem.

Not Dripping but it has fuel in orifice of the Main Air Jet (the one you cannot remove) so you can see it but this is while the carbs have been on a bench sitting while leak testing will the same apply?

Please be safe with your fuel lines...

This is why I'm checking before installing, Just playing it safe

If your lines start leaking at connections just because of a small wiggle than that rubber is shit.

It was leaking out of O-Rings on the Tee between the Carbs not from the lines on the Tee.

without pinching or kinking I think

I thought you could not replace the fuel lines due to this problem with the routing causing pinching and kinking due to the fact they have been formed and hardened to fit?

Cheers Alan

[Pat Conlon]

Bench test them: While you have your carbs out, orient them to the running position, now hook up an external gravity fuel tank, fill the float bowls, then let the carbs sit for awhile...see if you have any drips.

You should not have any drips.

[Sparky84]

Pat,
That's how I leak tested with a 300ml container overhead, no drips but fuel in the jet, all 4.
I'll blow the jet clean with air and set them up again.
It was set up for 2 days before I noticed this happening.
I'll also check fuel level in the bowls after this time (which I forgot to do when I noticed this)

Cheer Alan

[balky1]

You can put any fuel rated hose that is heat resistant. Routing is important to prevent kinking. You should have the routing diagram on the air-box if it's still there.

[Sparky84]

Back to leak test and found no more leaks   but there is fuel in the Main Air Jet  

Ok, so I found this on XS11 carb FAQ site which confirms what I'm seeing, fuel in the Main Air Jet seems to be normal.

Q: What does the main air jet do and what effect does changing to a larger or smaller size have?

A: This jet is pressed in and cannot be easily replaced. It does tend to get gummed up and must be cleaned very well. This jet bleeds air into the needle jet to emusify the fuel and dilute it for more precise metering by the jet needle. Larger air jet gives a leaner mixture and smaller (or plugged up) jet gives richer mixture.

http://sense.net//~blaine/xs11carb.html

So this tells me fuel is present in the Main Air Jet quite a bit of the time if it's getting "gummed up".


Cheers Alan

[Sparky84]

Fuel reservoir is higher, at present its got about 100ml in it via a 6mm to the 5/16" pipe to carbs.
Carbs are level in vice, both ways.
Floats have been checked and set to height recommended.
Fuel level has been checked using clear graduated tube.
At present 4mm below carb body as indicated by blue line, 3mm +/-1mm is in the GYSM.

Pictures and measurements are taken after 2 days on the bench.
Fuel is still present in Main Air Jet, I can even siphon fuel from it with a syringe!  or 

I'm still unsure if this is correct but all measurements seem to be correct

Cheers Alan

[balky1]

You are actually 5 mm below the carb body. Clear fluid level is measured at the bottom of the meniskus. https://www.thoughtco.com/how-to-read-a-meniscus-606055

[Sparky84]

You are actually 5 mm below the carb body. Clear fluid level is measured at the bottom of the meniskus. https://www.thoughtco.com/how-to-read-a-meniscus-606055

Fuel reservoir is higher, at present its got about 100ml in it via a 6mm to the 5/16" pipe to carbs.
Carbs are level in vice, both ways.
Floats have been checked and set to height recommended.
Fuel level has been checked using clear graduated tube.
At present 5mm below carb body as indicated by blue line, 3mm +/-1mm is in the GYSM.

Pictures and measurements are taken after 2 days on the bench.
Fuel is still present in Main Air Jet, I can even siphon fuel from it with a syringe!  or 

I'm still unsure if this is correct but all measurements seem to be correct

Cheers Alan

I have Fixed It 

Thanks Balky1, you are a Guiness, you should have been a Virtual Mechanic.

Cheers Alan

[Sparky84]

I was easily able to drain the level in the fuel bowls using a syringe to pretty close to the level of the bottom of the Main Jet.

[balky1]

I'm glad if I helped.
I don't think you should worry about that fuel unless it siphons out by itself.
Furthermore, did you disconnect the fuel reservoir when you were pulling the fuel with a syringe? Because if you didn't and there is fuel in the tank, the float bowl shouldn't get emptied.