Engine dies uphill!!! (Don't laugh)

[Frankenstein]

Well he actually bought gasbikes version of the sbp lightning cdi, I know my real lighting works really really good, who knows wtf is in the gasbike version but I somehow doubt that half the price is going to be equal in quality.

Now I do ask what is the high performance carburetor you bought? Perhaps include a link or good picture? They sell like 3 or 4 types of high performance and if we don't know what it is we can't tell you if it's s**t or not.

I'll note they sell the skyhawk like high performance cnc carb, they have the overflow hose hooked right to the auxiliary oil injection port (I only assume it's that) which ends up sucking excess fuel into th motor at more than 3/4 throttle. That's a big no no, overflow is over flow for a reason, and with a gas tank mounted in excess of 6 inches above the carburetor natural forces of gravity will indeed force excess fuel into the air stream non-atomized making for a very crap experience. The mains oil injection port is left open with a breather tube, which introduces air right to both jet ports, also stupid.

Change cdi to original first, then give it another shot, you might have an air leak, or possibly a badly tuned carb. If at all possible take the jet from your other carb and install it in the new one to help the jetting situation. This will give you a chance to reseat the carb for a tighter fit to help reduce chance of air leakages.

 

[Deleted member 12676]

what a shame. putting the original crap back on.
don't be lazy. jet the new carb.

 

[commanderroach1999]

The high performance carburetor did ok but I think it was the high performance cdi that was the problem

 

[Holly]

Spend your extra money on good brakes friend. Worry about high performance later.

 

[Steve Best]

Took both off works great now

You were told by an experienced member (MotorCycleRacing) to replace one at a time.
You didn't listen. You didn't do it. You didn't learn anything.
Go back and follow his advice and learn which caused the problem.

If it is the the carb, follow Jag's advice, and learn about jetting.
Most importantly, to stay alive, follow Holly's advice.

To go thru live buying stuff without learning is an empty experience.
To be happy, we need a Purpose Driven Life, and the first purpose is to learn.

Steve

 

[commanderroach1999]

I did do it first the cdi tried it fixed the problem. If I said I took off the high performance carburetor that was a typo. I learned that the cdi was the problem.

 

[Randall]

what a shame. putting the original crap back on.
don't be lazy. jet the new carb.

I agree with Jag .... jet that carb. I did and now my beast kicks a**!

 

[DuctTapedGoat]

The high performance carburetor did ok but I think it was the high performance cdi that was the problem

I bet you bought a CNS HiPerf carb, they have a cabled choke which I have never been able to dial in, its choke causing issues with them, and I have never tried to fix it, just run NT or upgrade to Dellorto clone is what I've heard.

Even tho you typod, that would be another common solution to the topic.

 

[crassius]

I think he solved it about 18 months ago : )

 

[Frankenstein]

I bet you bought a CNS HiPerf carb, they have a cabled choke which I have never been able to dial in, its choke causing issues with them, and I have never tried to fix it, just run NT or upgrade to Dellorto clone is what I've heard.

Even tho you typod, that would be another common solution to the topic.

What do you mean the choke is bad? Actually it's not even a choke, it's an enricher, it introduces a larger orifice with a path to the carb bowl and its own separate path into the carb throat.

It shouldn't be dialed in, if the main and idle jets and the needle are in good then the choke is fine. The main and idle jets are different sized threads. If you hook the breather and the overflow and the oil injection tubes up wrong you'll have problems. If you make the choke cable too tight it may stay open or open in turns when the slack might get pulled too much. There should be a spring on top of the choke barrel under the carb cap, if it's not the barrel won't seat and you'll run too rich always. If the choke barrel gets sticky with old fuel or whatever it might not close. Even a grain of sand in that part can lock it open, this is common if the rubber cable boot gets torn open or never installed on the top of the cap.

It's an annoying carburetor when put side by side with other carburetors available but it can be dialed in nicely for any motor and is capable of taking deeper breaths when you tune a motor for very high power. Notice they don't foam up too easily in colder weather either, and have a nice 'soft valve' for the bowl, so the valve shuts well and doesn't get destroyed by engine vibration as easily. Never had one flood a bike from a faulty valve, and the float height doesn't matter as much because it's not as touchy and has bigger floats which seems more stable.

I like it, I'm used to it, and I can dial them rather quick, the key is knowing how the bike is riding at low med and high throttle before changing them up.