Dellorto Carb setup

[danbretta]

Hi,

I'm needing some help in setting up the 28mm Dellorto PHBH carb on my GP200 that has a scootrs stainless steel exhaust. All else is standard.

I've just fixed the brand new carb to the scoot as is. I have an x7 needle that hasn't gone in yet. The GP is running way to rich and is oiling the plug badly resulting in not being able to rev after several miles usage. I also need to fill the standard tank every 20 miles or so.

Has anyone got a similar setup and can advise on setting up the carb.

I am reading the dellorto manual but tis complicated.

Cheers in advance

Danbretta

[mickdale]

look at the carb set ups section.....

53 pilot
av266 atomiser
x 13 needle 2nd clip
125 main

yes they drink fuel

[danbretta]

look at the carb set ups section.....

53 pilot
av266 atomiser
x 13 needle 2nd clip
125 main

yes they drink fuel

It's already more fun tho

Thanks for the advice

[leigh]

20 miles from a standard tank? i can get 70 from my rb22 on standard tank. Have you checked float level/ float needle jet

[sideout]

10 miles per litre from my PHBH, Mug 186 & JL3.

[Special X]

look at the carb set ups section.....

53 pilot
av266 atomiser
x 13 needle 2nd clip
125 main

yes they drink fuel

Certainly will on that jetting!
118 main, and if it's rich at mid throttle change to the X7

[danbretta]

Thanks for your input guys. It's really appreciated

[danbretta]

Well my GP has been through the spray shop and I've got it back. Stiil having problems running the damned thing tho.

It now has a jl3 snail, same carb 115 main jet, x7 needle, pilot jet 55, and choke jet 90 (it was 70).

Problem I have as it won't start unless I pour a little fuel in to the air hose. It will then start but sometimes not rev untill it changes its mind at some point. Sometimes its fine. Sometimes it will stop revving when riding.

Any ideas? Could it be a dodgy brand new carb?

[soosh]

Mine was dyno`d on this:-
115 main. AV264 atomiser. X13 on 2nd clip. cant remember the pilot
Thats on a proper stage 4 with a PM pipe.

[bigmuff]

Well my GP has been through the spray shop and I've got it back. Stiil having problems running the damned thing tho.

It now has a jl3 snail, same carb 115 main jet, x7 needle, pilot jet 55, and choke jet 90 (it was 70).

Problem I have as it won't start unless I pour a little fuel in to the air hose. It will then start but sometimes not rev untill it changes its mind at some point. Sometimes its fine. Sometimes it will stop revving when riding.

Any ideas? Could it be a dodgy brand new carb?

You mention airhose, not trying to run it through the airbox are you?