85 250r not reving out

[mike m]

maybe somebody can help me with this , I have a 250r that I have spent the last 2-3 years buying parts for and pieced this together now it will not rev out. I have 150 psi, I took the lid and air cleaner out, it revs out a lot better but still chugs/sputters. any help at this point would be greatly appreciated

[fabiodriven]

Have you ever jetted it?

[shortline10]

Could be the CDI , that’s the famous issue with the 85 model ......
They will rev out to about 3/4 throttle and then start coughing / missing .

[yaegerb]

maybe somebody can help me with this , I have a 250r that I have spent the last 2-3 years buying parts for and pieced this together now it will not rev out. I have 150 psi, I took the lid and air cleaner out, it revs out a lot better but still chugs/sputters. any help at this point would be greatly appreciated

150 is low. Should be around 180. What jets are in the carb?

[mike m]

everything is stock, found the needle in the carb on the 3rd slot. moved it up to the 2nd, runs a little better. spits and sputters for a few seconds then revs right out.

[schlepp29]

my secondary coil went out in mineI changed it and it ran fine after that but definitely check all the things the other guys are saying

[fabiodriven]

everything is stock, found the needle in the carb on the 3rd slot. moved it up to the 2nd, runs a little better. spits and sputters for a few seconds then revs right out.

If a carburetor adjustment did have an effect then you might need to jet the bike.

[jeswinehart]

I have had same no Rev problem on a couple machines + it turned out to be muffle was plugged/sludge up.
Perhaps pull muffler off and see ?
If it is plugged I will share with you hoe to clean,,,