93 rm125 need help!!!

[ColtonGG33]

My brother got a 93 rm125 the other day, and it idles perfect but as soon as u give it as it just bogs and bogs and as soon as you put it in gear it will just stall out, so we took it to a shop, and had them jet it, oh and the guy he bought it off of said it was bored to a 144 with a pro circuit exhaust, so we got a call today saying they don't know what the problem is, they jetted it a couple times to get it right and still can't figure it out. So that's why I'm here lol, so can u guys give some ideas on what u think is wrong.

Any help will be appreciated!

Colton

[Jason125m]

my trx400 did that when the stator was on its way out. Most likely a weak spark problem.

[Dirtcrasher]

When my 81 RM125 bogged down, it was low on compression.........

[ColtonGG33]

hey guys thanx for the info, but the guys at the shop found out what it was, they said it has to be either the CDI box or a stator one or the other, we should be getting it tomorrow hopefully! cannt wait to ride it, the thing is huge. it goes like a little past my
waist and im almost 6' so yeah ill put some pics up of it when we get it!