Weber carb leaks LOTS of fuel

[BARONROJO]

Hi pals,


After 6 and a half years abandoned at the bottom of my garage, las summer I decided to take my good old Paso on the road again.
I started an ordinary revision but I found that there was oil into de combustion chambers. After looking for the right parts here and there I was finally able to rebuild to new the whole upper end of my engine (heads, valves, segments, cilynders....

Saturday it started fine but the fuel tap leaked and I repaired it with the right O-rings.
But today I started it again..... at first it worked fine but after a few minutes problems started... as far as I've been able to see, my weber leaks fuel into the engine (just through the right barrel) and floods everything. Last time I use my Paso, the carb worked quite right, so...

What might be the problem? Any ideas? Float problem? over pressure from pump?
When I turn the ignition key to "on" I hear a bubbling sound of fuel leaking into the carb. After removing ths spark plugs I checked they were very wet and there were lots of fuel into the cilynders (I pumped it out usin the starter)

Thank you in advance for your help, I'm quite a confident mechanic but I have very little knowledge of Webers.

[paso750]

did you rebuild and clean the Weber ? You may have dirt deposits in the float chamber from when the fuel evaporated over time. I guess the float valve isn`t closing properly.

G.

[higgy]

As G suggested, clean out your float bowl replace the needle and seat and top gasket. Better yet get your self some carb cleaner and clean out everything and replace all those o-rings and don't forget to change the oil
rebuild kits are cheap.If you have time they are extra cheap from Alfa1750's ebay store Regardless of where you hail from

[BARONROJO]

Guess what? After a whole night of sleep, I've wokwn up and I've arrived at the same conclusion: It must be the float needle valve which leaks fuel.

It happened with the fuel tap too, so I think it's normal after 6+ years.....

Thank you!!!!

[BARONROJO]

Thank you both, guys. I did as you said and the bike runs now perfectly. Well, I've performed no road test but everything else seems in good condition.

After 6,5 years and a engine upper section bebuild, she has started perfectly and turns smoothly.

Next week I'l get her insuranced and on the road again!!!!!!

[ducapaso]

Just to be sure about yuor work: you put new timing belts?

[BARONROJO]

Sure I did Nicola!!!! (But thank you anyway!)

As I told before, I'm quite a competent mechanic. I leave you a sample of my work published on internet for the maintenance of a Ducati... It's in spanish but the pictures are nice and you, being italian, can understand it more or less.

You must click on the different chapters to visit them:
http://www.ducatiarmy.com/phpBBforum/vi ... =31&t=2603

[Tamburinifan]

Looks like you need to register, could you post a pic?

[BARONROJO]

It works through this link!

http://www.ducatistas.com/foros/mecanic ... #msg903548