84 200x with 200 Livan ohc running lean

[Kingcricket]

I have an 84 200x the old motor was having problems so I found a brand new lifan motor for cheap. Anyway I see a lot of post on here a while back and just wondering how anybody set up there carb, when I start mine it idles perfect but when you Crack the throttle fast it just bogs. It does drive but has no power like it's running lean. Spark plug is consistently white. No mods on it either

Also I see that the carb is set up for an accelerator pump that I can't use due to the frame rail. From what I see about newer bikes this is the problem they have when there pump goes

[DohcBikes]

Pretty sure you've answered your own question.

[Kingcricket]

I was mainly wondering how anybody made it work because they all say it has more power and better running, but like I said you can't hook the accelerator pump up so how are people running there carb. I have 3 carbs from the other motor 2 brand new and it runs bad with all of them

[DohcBikes]

Do you mind posting some pictures of your engine in the frame with the intake and carb setup?

Lots of people here including myself have ran both the ohc and ohv lifans with great success, but i can't specifically remember anyone using a pumper carb. Mine have all been outfitted with keihin copies anywhere from 24mm to 27mm.

Also, can you post your engine model number please, there are lots of variations.

[Kingcricket]

I'll get some up tomorrow I took the spring and ball and jet out of the pump and it runs strong but at idle still has the bog and the plug is really clean so it's still lean, I don't like the idea of making something work like that so if there is a carb that will work I'd rather get it or jet sizes cause im running 98 main and i think 35 pilot, then the other carb is a 27mm carb running 108 main and 40 pilot but like i said bog doesn'the go away but pics tomorrow

[Kingcricket]

https://flic.kr/p/J3jqbq

[Kingcricket]

[Kingcricket]

Engine says 161 fmj

[yaegerb]

do you have a stock 200x carb you can try? 24 VM Keihin.

[Kingcricket]

The carb that was on my old motor was a keihin I'm soaking it and cleaning it now

That carbs junk threads are stripped out on the bowl leaks everywhere motor did rev up pretty decent (still bogged) so I put the Sheng Wey back on that's the carb that came with motor

Trying to upload pics from flickr but it's not working

[Kingcricket]

https://flic.kr/p/JzjBGm

[DohcBikes]

Engine says 161 fmj

Thats a "150cc" (actual 145cc) engine. It will not run well with a 24mm carb. 22mm is the largest you want to run. A stock 200s carb with stock jetting would be a good startying point. Theres no need to run a pumper carb with that engine. Don't expect the performance of the larger lifans, the 150's just dont put out a lot of power.

[DohcBikes]

The carb that was on my old motor was a keihin I'm soaking it and cleaning it now

That carbs junk threads are stripped out on the bowl leaks everywhere motor did rev up pretty decent (still bogged) so I put the Sheng Wey back on that's the carb that came with motor

Hate to be a broken record but the stock sheng way pumper is not going to work well unless the pump is hooked up.

[Kingcricket]

Well it works with the pumper gutted so it's sucking extra gas from the pumper, but with this set up it runs great other than the slight bog at idle and running lean. So the 200cc is the 163 fml

[DohcBikes]

Ok screw it. Ignore the advice you asked for and run it that way then.

By the way I just built and sold trike with that exact motor and used a 200s carb. Runs perfect.