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V85TT Evap and Tip Info

Hello fellow v85tt owners...
First guzzi for me, the fuel reading is annoying. Never considered the tank pressure.
Example, full tank mine reads 320 or so till empty.
Ride till tank is "empty".
Put in 18 liters.

If I were to open my tank and relieve pressure, would the gauge recalibrate to a degree? I'll try it but curious if it works that way...
2nd post btw. I am a newbie.
Pressure can't be heat related too much, minus 3 Celsius on my commute today.

MFS
 
New V85 is a week old. On the way home I noted some pressure escaping when I opened the tank to fill up, but not too bad. Fast forward to Saturday in Tucson, bike sitting in the shade but temps getting hotter than I'd seen since getting the bike. I filled up on the way home and was greeted with a loud whoosh along with a lot of expelled fuel mist as I opened the lid.

At the moment I'm unsure of my local dealer and would like to not make changes noticeable in the event of a service.
Will the simple removal/gutting of the topover valve fix this problem? In the past I've removed the canister as well, but as I'm unsure of my local dealership I'd prefer to leave that in place. I could always cap the vacuum line on the throttle body and then hook it back up if needed, just making sure removing the check valve will not cause extra strangeness if the canister is left hooked up.
 
Will the simple removal/gutting of the topover valve fix this problem? The gas blew up and out of the tank in a vapor, it was more pressurization than a suck.
Based on above, it should, but blow air (via mouth) through the evap canister to be sure there’s no pinched lines or a clog.
 
Have I missed where someone has explained how the quick-connect for the fuel line works?
It looks nothing like the one on my 1200 Sport, which I hated, and all the instructions just say to disconnect.
 
I've done it several times, a different connector but same principle. Run motor, disconnect fuel pump power, and wait until motor stumbles and dies. Then press the button in the quick connector and it should release.

It's been a while, so my memory ain't what it used to be, but I think this fairly accurate.
 
I got it sorted, you have to pull that yellow thing back to uncover the little white buttons. Squeeze the little white buttons, hold your mouth just right, and the fuel line comes apart.
 
I got it sorted, you have to pull that yellow thing back to uncover the little white buttons. Squeeze the little white buttons, hold your mouth just right, and the fuel line comes apart.

Easier said than done if the connector face with a little white button is facing the tank. I'll be replacing with a metal one later in the year.
 
Do you have a source or part number for the metal fitting?

No I don't, but google "motorcycle quick release fuel line coupler" brings up many choices and I'm sure Touratech will do them.

I really wasn't impressed with the OE connector, I was expecting it to break the first time I tried to separate the line. The position of the connector against the tank side made depressing little white tab difficult.

Does anyone know the internal dia of the hose?
 
I got the tank off today, disconnected the hose to the check valve and put the tank on the ground.
Now I hear a high pitched noise, it's the air slowly releasing from the tank. It sounds like there's some sort of restriction in the hose between the tank and the check valve.
I open the gas cap and there is a bit of pressure still in there.
Normal?
I blew into the hose and there didn't seem to be any restriction, but the gas cap was open.
 
There's a one-way valve in the circuit, similar to previous, except made from plastic. On other models, I've used a bit of hot water to open these up and remove the innards, but the V85 one was a bit more reluctant to cooperate.

So I removed it, and when I overfill, I see fuel on the ground. Not good, must have another go.
 
There's a one-way valve in the circuit, similar to previous, except made from plastic. On other models, I've used a bit of hot water to open these up and remove the innards, but the V85 one was a bit more reluctant to cooperate.

So I removed it, and when I overfill, I see fuel on the ground. Not good, must have another go.

The one-way valve is the grey/green thing Todd shows in the first post, right?
If so, I disconnected that and just had the hose coming from the tank, tank sitting on the ground and still getting pressure in the tank.
 
That's the one. I did mine before Todd posted his excellent tutorial.

But it sounds. like you have a blockage somewhere. Have you tried poking a thin wire into the tank from where the tipover valve was disconnected? From CARC days I remember this was a torturous route, so probably not achievable. But you should be able to blow air through.
 
That's the one. I did mine before Todd posted his excellent tutorial.

But it sounds. like you have a blockage somewhere. Have you tried poking a thin wire into the tank from where the tipover valve was disconnected? From CARC days I remember this was a torturous route, so probably not achievable. But you should be able to blow air through.
I was able to blow air through from the hose end, didn't try pressurized so it was just breath. I had the tank lid open and there seemed to not be any restriction blowing that way. I also blew compressed air from the hole in the tank back through and it exited well enough.

I'm wondering if it could be something in the gas cap itself. But I think first I'll take the tank back off and get a better look again.
 
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