Tank Suck

[quazi-moto]

Its never happened in the past, but lately I'm noticing quite a bit of "tank suck" on the '02 LeMans.

[jrt]

You can remove the rubber grommet just under the gas tank lid and that will cure it. Not the safest strategy, but it's effective.

[dlaing]

The safer solution is to position the tip-over valve correctly...however that is??? I think people said vertically, but I suppose it is possible the valve was installed backwards, in which case vertically and upside-down would be correct.

FWIW at least on V11 was lost in flames, so it is true, doodoo happens.

[Guest PAULSMART]

check the air vent rubber pipe is not pinched.

 

use a piece of small pipe placed over the air holes under the filler cap and blow hard....any resistance and its blocked/pinched.

 

there are two holes, so try both as they should all be clear.

 

Paul

[mark.gilmore]

CHEERS

[dbdicker]

You can remove the rubber grommet just under the gas tank lid and that will cure it.  Not the safest strategy, but it's effective.

92894[/snapback]

 

Much quicker and effective than farting around with the tip over valve. Safer? Your last worry in a slider is the little help that tip-over valve gives.

[quazi-moto]

Tanks guys! (pun intended)

[dlaing]

You can also cut a tiny slit in the grommet and that will allow enough air in, and if you ever tip over, the fuel will leak out a little bit slower than no grommet, and less fuel will evaporate into the warming global troposphere

[Guest Barnapkin]

Paul got that one right. My hose was pinched (nothing personal), and my tank sucked enough to let the paint separate from the tank. I had three large paint bubbles where the platic tank had deformed. It took guzzi 11 months to finally replace the tank. My dealer had to go back 3 times with his claim for warranty work.

 

FYI= double check the tube routing anytime you lift the tank. ie: installing an aftermarket air filter.

[droydx]

Paul got that one right.  My hose was pinched (nothing personal), and my tank sucked enough to let the paint separate from the tank.  I had three large paint bubbles where the platic tank had deformed.  It took guzzi 11 months to finally replace the tank.  My dealer had to go back 3 times with his claim for warranty work.

 

FYI= double check the tube routing anytime you lift the tank.  ie: installing an aftermarket air filter.

93542[/snapback]

 

The valve was installed backwards on my Rosso Corsa. It works much better when installed correctly!!

[stormsedge]

Last I saw mine, it was working great in the trash can.

[quazi-moto]

I had a dealer install a FBF lidless airbox kit. I wonder if they messed with the hose routing when the tank was off. I want to pull the tank off anyway to have a look at the bullet connectors in the harness. Sometimes this bike requires some bar-wiggling to get it started. My tanks really been suckin' lately. When I open the lid after a long run I can watch the tank suddenly expand. My side covers are cracked also probably due to the sucking effect exerting more pressure on the covers.