250R jetting

[Mony25]

I have an 86 honda 250R it has a soduka pipe and a twin air filter with the air box lid removed i have a 160 main and a 52 pilot jet in it right now im having trouble with it wanting to rev real high with it in neutral i cant seem to bring it down with the idle adjustment i turned out the air screw about 4 turns and it now idles normal but i dont believe that you are supposed to use that as an idle adjustment. This is my first R and i am just getting the hang of this any help would be appreciated thaks.

[jayhoy]

I am dealing with the same issue with my lt 250r. I would start by checking your carb/intake boot for dry rot and cracking,gaskets ect. The engine is running lean and thats why its racing,lean conditions in two stroke engines is not a good thing,they blow up.

[Mony25]

Ya that was my first thought i already did that just forgot to post it lol i sprayed carb cleaner around the intake boot and never found anywhere that it was sucking air

[R4ever]

do u have the stock carb on there?? were u turning the air/fuel screw ( black plastic knob) or the air screw (small brass knob)

[Mony25]

It was the black plastic screw so that would be the air/fuel knob. It is also a stock carb.

[R4ever]

i dont have a stock carb.. and im just learning how to jet and stuff bymyself.. some one posted this link on here and so far its been very helpfull to me.. here ya go..

http://www.duncanracing.com/techfaq/...-jetting.phtml

[Mony25]

What jets are you running in yours or do you know what is the recommended jet?

[Bad Ass Honda 250r]

you need to go smaller on the pilot jet.... but first mess with the air screw.... little brass thingy.... turn it out a half a turn to a turn.... then see how it runs... if nothing changes go down on the pilot