cns carb. JUNK ?

[danlandberg]

What is up with the "cns" carb ? I bought a GRUBI kit (66cc) because it came with the cns carb! So far, this carb is nothing but JUNK!! I have a stock (48cc) carb on now and it runs good! (30mph). There is no throtle cable adjustment, and the air adjust screw, and idle screw are "lock tight) solid!!! What is up with that? I'm going to get a "speed" carb, because I know they work! If Anybody has any input on this, PLEASE respond! Need to know the proper jet size and what notch your needle clip is set at? I'm in L.A. (southern calif.) THANKS Dan

 

[Sgt. Howard]

CNS carb

the locktite issue has to do with CARB laws in Californicatia- did you buy through Kings'? I have similar on my engines that I just bought- also there is an issue with gunkus in the main jet. If you cannot get it to do much more than idle, get to the main jet and pass a pipe cleaner through it's tube and soft wire through the jet. As for the locktite, that's actually epoxy... soak with gas and see what happens. Also, you can adjust the throttle cable marginally where it curves out of the handle but you have to dismount the handle to do it. Should you want more release of the cable, open the handle and shave down the stop of the grip with a good sharp wood chisel.
the Old Sgt.

 

[PatTheThird]

ThatsDax

Consider the RT carb from ThatsDax.com. I am soooo happy with it.

 

[thearcticfisherman]

What is up with the "cns" carb ? I bought a GRUBI kit (66cc) because it came with the cns carb! So far, this carb is nothing but JUNK!! I have a stock (48cc) carb on now and it runs good! (30mph). There is no throtle cable adjustment, and the air adjust screw, and idle screw are "lock tight) solid!!! What is up with that? I'm going to get a "speed" carb, because I know they work! If Anybody has any input on this, PLEASE respond! Need to know the proper jet size and what notch your needle clip is set at? I'm in L.A. (southern calif.) THANKS Dan

yo dont knock the CNS carb really! if you had a clue look at what the problem is no really look at how big the carb is and how small the air cleaner is. BAM!!!!!!!!!!!!!!! go buy a air cleaner for a pit bike, you will have to do a mod to make it fit but i tell ya what my bike went from doing 4 stroking and only 20 mph to no 4 stroking and 33 mph!!!!!! hope this helps to everyone!!!!!!!!!!

 

[danlandberg]

I have tried running the CNS carb w/out the air filter, jet is clean, still no good!!! The cable is to long for the housing. So I cut a small push spring ( like whats in a ball point pen ) threaded it over inner cable to take up space and will compress at full throttle so the cable pull won't break, they are plastic twist throttles (cheap). I have had good luck with the SPEED carb, but I'm going to check into the RT carb. I'm in So CA now just above sea level. It should run better than it does. Thanks for the reply!

 

[lazydog]

Just gotta tune it right. The CNS is a great carb

Video from today after replaceing all my stock parts so I can write a thing for CNS tuning
www.hd-computers.com/temp/CNSV2carb.3gp

 

[Joeeastman]

I had this carb with my skyhawk gt-5 and it was ok at first but that was the first engine that i ever had. My experience with these are that in time, the intake port on the housing will probably break, which i have seen happen already on friends bikes and the choke never seems to function properly. I got an NT carb, very simple and have had excellent results and reliability with it and they are cheap...

 

[danlandberg]

The CNS carb came with my GRUBEE gt-5 and it never worked right.! The air adjustment screw is loc tite(ed) so you can't adjust it, The idel screw is the same way. The piston plunger style choke W/cable SUCKS. It was a good thing I had two stock carbs in my collection. I had a flying horse engine W/"SPEED" carb, (stold in Utah) it ran great!!! Going to get another "SPEED" carb and put my SBP chamber back on when I have a little extra $$$, (Like there is a such thing as "extra" $$$). I'll stick with the "SPEED" carb any day, inexpencive and simple.

 

[VROOM]

I too am having trouble with my new CNS carb. It floods, choke doesnt work, stuck needles and runs terrible... I got a cheapo stock carb but it didn't come with a gasket . It also fits on the manifold very snugly. Should there be a gasket in there? Do I need a different manifold?
I'm only asking you because your running the same engine and the same carb. Thank you.

 

[Al.Fisherman]

I too am having trouble with my new CNS carb. It floods, choke doesnt work, stuck needles and runs terrible... I got a cheapo stock carb but it didn't come with a gasket . It also fits on the manifold very snugly. Should there be a gasket in there? Do I need a different manifold?
I'm only asking you because your running the same engine and the same carb. Thank you.

The seal between the manifold and cylinder can be sealed with RTV. Or cut a gasket out of gasket material sold at many automotive stores.