1985 kawasaki kx 125cc acts like choke is on

first tell what chokes mean. (it means 2 things so I ask)
2006 never got a full tune up on the engine in 16 years./?
uphills. power loss = chokes sure.but
for example, engine misfires violently felt and heard.???
or no misfire but lacks power just like dragging 2000lb dead weight.
we call that bogging, like walking in swap or bog.
bad spark loves to fail up hills (no new spark parts) due to higher combustion pressures.
bogging is caused by low fuel pressure, the filters is packed up
or air filter never changed out. again tune up parts.

the best ACT is get the car serviced in a real shop.
tell them it lacks power on hills , hot engine
the cold engine evidence told , hints at weak fuel pressure.
EFI FPR might be bad, fuel pressure Regulator, and more to find more takes tools you do not have,.

1985 Vf750F - Bogs Down On Throttle - Maintenance Questions - VFR ...

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Page 1 of 2 - 1985 Vf750F - Bogs Down On Throttle - posted in Maintenance Questions: Greetings VF braintrust! I have a 1985 VF750F which I ...

Honda Spree and Elite 50 Forums • View topic - 1986 honda spree ...

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Apr 9, 2011 - 12 posts - ‎4 authors
Hi all I am new to thie forum. I recently bought a used rebuild Honda Spree. The guy I bought it from ran super unleaded in it and mixes klotz ...

250 bogging down under full throttle. - Honda Rebel Forum

Check your fuel filters they may need to be changed.

She will loose power and possibly shut down if overheated. Check your cyclinder pressure. Make sure head didn't warp.

First place I'd check is the carbs - make sure the choke isn't engaged!
Choke on = easy start + easy idle + easy revs + bog under load.

Too much air (hole in the airbox, hose off the airbox) can do this too.

is the compression good on your engine have you checked and cleaned the carb out also are you running the right pre mix ratio about 32:1 which is about 156 ml oil to 5 litres of petrol

anything over 120 on compression test is ok. anything under 120 and its time for top end. and for bog you might try cleaning carb.

you need to clean out the carburetor, the gas isn't getting through it. the bogging is caused by all the gas going into the engine cause of the choke, it dumps raw fuel into the engine and cant burn it all, there fore bogging and acting sluggish, the back firing is caused by the same thing, too much fuel going into the engine and being deposited in the pipe and igniting occasionally, clean the carb out and it will run fine

Might be the wrong jetting, or possibly spark plug gap is not correct.