incradeble lag time in trottle response

[ducatigirl100]

Possible needle jet time on your carbs.  They wear oval over time and cause the bike to run rich on part load.  Only a guess, but a magnifying glass will tell you. 

I think this is your screw
http://www.yoyodyneti.com/ProductInfo.aspx?productid=LVF125/1S
and your washers
http://www.yoyodyneti.com/ProductInfo.aspx?productid=LVF125/1S
if you can't find them locally.

Call Fred to make sure the part is correct
973 386 0040
Fax: 973 386 0042

  for 10$ I'll take my chances

[uberranger]

I had a problem that sounds similar on another
bike of mine (1996 Suzuki Bandit) where I would
give it throttle and it would almost stutter for a
second and then GO. It turned out to be a very dirty air filter...

Good luck

[ducatigirl100]

Kinked vent hoses can cause a lag too.

Plugs usually foul, or are at least very sooty.

both   

I add a hose that was completely "collapsed" so I 've cut about 1 cm just so that the air would pass   

my plugs where full of carbon deposit whit some oil one one of them 


I would say the symptom is far less noticeable but it's still there

1) I've read somewere that maybe  it's' "valve check time ?"

2) when twist the throttle and pull back a little bit the motor seams to "catch is air" so in my point a view it's really crap in the carburetor ?

[koko64]

Maybe fresh spark plugs and if that doesn't improve things, a carb rebuild with new needle jets.

[ducatigirl100]

Maybe fresh spark plugs and if that doesn't improve things, a carb rebuild with new needle jets.

spark plugs done 

rebuilt the carb ... well  ...when I'll have the courage  I'm sure I'll be fine  2 year ago I knew nothing about mechanic and now I know how to use a strobe light for The timing, sync the carb whit vacuum gages, bleed clutch and brakes , change brake pads....etc...  I guess the next step is a full carb rebuild 


owning a Duacti is so much fun

[ducatigirl100]

Does anyone know a good "rebuil" kit for Mukini carb?

Or I'm better of bying dynojet kit whit the K&N pod filters?

[koko64]

I would consider a Factory Pro or Dynojet jet kit suitable  for an open air box.  You use a K&N panel filter DU 0900. I would suggest an open air box (you cut the top of the lid off), rather than pod filters unless you want the hassle of making brackets to carry your ignition components.
New needle jets are a good idea, (sometimes referred to as emulsion tubes). Factory Pro make them. Like DP, I prefer the Dynojet needle and you get a bigger range of main jets, which is important for an open air box or pods.
Check out the Dynojet site for your model and open air box mod (stage 2).

I'm guessing others will know  where to get gaskets, etc. Maybe SUDCO. Some local dealers may have rebuild kits.

We are here to help you when you select the jetting.

[wannabfast]

with carbs, ive had good success with putting in new float bowl gaskets, and using a pin to clean out the jets and reassembling

[Ddan]

I would consider a Factory Pro or Dynojet jet kit suitable  for an open air box.  You use a K&N panel filter DU 0900. I would suggest an open air box (you cut the top of the lid off), rather than pod filters unless you want the hassle of making brackets to carry your ignition components.
New needle jets are a good idea, (sometimes referred to as emulsion tubes). Factory Pro make them. Like DP, I prefer the Dynojet needle and you get a bigger range of main jets, which is important for an open air box or pods.
Check out the Dynojet site for your model and open air box mod (stage 2).

I'm guessing others will know  where to get gaskets, etc. Maybe SUDCO. Some local dealers may have rebuild kits.

We are here to help you when you select the jetting.

AFAIK, the Factory Pro jets use the same numbering as Mikuni, Dynojet uses a different system.  Keep that in mind when you're ordering.

[ducpainter]

I would consider a Factory Pro or Dynojet jet kit suitable  for an open air box.  You use a K&N panel filter DU 0900. I would suggest an open air box (you cut the top of the lid off), rather than pod filters unless you want the hassle of making brackets to carry your ignition components.
New needle jets are a good idea, (sometimes referred to as emulsion tubes). Factory Pro make them. Like DP, I prefer the Dynojet needle and you get a bigger range of main jets, which is important for an open air box or pods.
Check out the Dynojet site for your model and open air box mod (stage 2).

I'm guessing others will know  where to get gaskets, etc. Maybe SUDCO. Some local dealers may have rebuild kits.

We are here to help you when you select the jetting.

There is a Yamaha model that used the same carbs and IIRC they offer a gasket/rebuild kit.

[Howie]

There is a Yamaha model that used the same carbs and IIRC they offer a gasket/rebuild kit.

Yamaha TDM 850.  Same carb bodies.

[ducpainter]

Yamaha TDM 850.  Same carb bodies.

I knew you'd drop by and fill in the details. 

[ducatigirl100]

with carbs, ive had good success with putting in new float bowl gaskets, and using a pin to clean out the jets and reassembling

Where do you get the float bowl gasket ? 

I must admit that I'm really scratching my head right now is there a complete rebuilt kit that I can by somewere on the web?....  I'm starting to think the easy part in all this is to rebuilt the carb...     I've look up all the references Sudco, IIRC

I found this sold by my trusty monsterparts http://www.monsterparts.com/pc/DYNOJETKIT/Fuel-Air/DYNOJETKIT.html

I guess stage 2 whit some K&N   is that what I really need ?

[ducatigirl100]

Very inspirational and it does answer a lots a little questions :



http://www.ducatisuite.com/jetkit.html

[koko64]

Hey 100.
That site is very helpful with good pictures.
You can see the extra work if you do pods.

I would just have the open airbox with K&N filter. But to make life easier I would seperate the airbox from the battery box for future servicing.
I would make sure you replace the needle jets,  even if that is all you did.