Buell CV misery

[Jeffk1200]

I have a 2001 buell lighting x1 engine in a 1990 sportster frame. This engine in question has stock cams, ignition, valves all the internal engine is stock. I have the bike running and the it idles great. I have added a thunderslider kit to my cv carberator. I also installed the emulsion tube from the kit has more holes in it as well as a different size thread for the main jet. I have a 175 main and a 46 slow jet. I have issues witht the bike poping while I am riding it when the throttle is not turned. i also noticed if try to launch the bike from a stop it dies. Fires back up with no trouble and off i got. I changed the intake the seals to just be safe. Then propane checked them no issues found. I poured less than an ounce of oil into each cylinder to inspect for exhaust leaks. I found nothing. i have 2 inch drags open that i put bolts with nuts in for back pressure. I also checked to see the slider was opperating by blowing into the port the slider worked fine. I shimmed the needle so that it sits higher by one grove. I have also noticed once i get into a higher gear the bike acts as if it surges and has no power. I am at my wits end with this thing, I do not know what else i can try to get this thing running correctly. If any one has any suggestions i would be greatful as I am now missing the riding season cause of this bikes current isues.

[rocketmangb]

You pinched the slide diaphragm

[rocketmangb]

Also

I dont know how you check the slide by BLOWING on it ?

Pull the air cleaner and raise the slide with your finger and release it

If it slams shut its leaking

It should close quickly but should make a whooshing sound as it closes

[Jeffk1200]

I learned to check them blowing in to port on the aircleaner side of the intake that is the passage to the pressure chamber of the slide. As i blow into it the slide raises until i stop then it comes down promptly but not like it dropped. If you blow into it and the diaprham has been pinched or torn you will hear it, sounds kinda like a reed. The slide will do nothing

[KevinJ]

+1 for what Rocketmangb said.


and also check the float level, accelerator pump membrane and fuel filter.

[Jeffk1200]

I replaced the acc pump and checked it all good works great i turned the barrel towards the front cyclinder slightly nothing extreme. Float level is right at the service manuals recomndations for the cv. I also double checked the timming for good measure, the dot is right in the center of the window and showing up when it should.



By the way rocketmangb..........I love that bike very nice!

[KevinJ]

Just wondering, why did you take out the X1's EFI?

[rocketmangb]

So you are saying you are blowing in to the bowl vent on the AC face of the carb at 10 oclock ?

[rocketmangb]

Thanks for the complement !

[Jeffk1200]

I kinda really like the carbs always have it is more of a preferance for me. I was rasied s&s carbs. Found the cv and was instatly impressed wanted to build a sportster with a buell engine and incorperate the cv.

Rocketmangb... If you are looking into the carb witht the aircleaner off and usually the support plate at directly 12 oclock you see a port that goes form i would say 10 to 2. it is ovular shape follows the contour of the carb opening. If your diaphram is functioning properly if you blow air into that port it will pick up your slide. You might have to blow with some force depending on what spring tension you have in there.