2strokes4life
Member
- Apr 1, 2009
- 39
- 0
Here's the deal. I have a 2002 RM125. I bought it off of CL earlier in the year. It was a mess. It has a new top end including cylinder. Bottom end is solid. It has a new FMF Fatty pipe and new FMF silencer. I also replaced the stock air filter with a UNI. After the rebuild, I rode it slow and followed break in as I do with all of my bikes. I ride mostly 250's. This is my first 125. I'm not real sure about the low end power of a 125. I assumed they wouldn't have the torque a 250 does. I'm having a real problem with the low end off idle. I know what everyone is thinking. Jetting right? Listen to this. The bike idles perfectly. The mid to top end is amazing. The problem is right off idle. I even bought a JD jet kit thinking the jetting was the issue. I thought it was a lean bog. Now I don't know. I have tried everything. I have had the carb completely apart and cleaned and recleaned. It is spotless. I have sprayed carb cleaner and blown out all of the fuel paths. There is no junk stuck in the carb. When I take off it wants to bog. If I just start to take off and peg the throttle it just bogs and will die if I hold the throttle wide open. If I slowly give it throttle it will open up and scream. I can't figure out what is causing this bog. 1st thought was lean bog, 2nd thought was debris in the carb. Please help me my brothers and sisters. I'm almost to the point of buying a new carb. Could I switch my 2002 CR 250 carb to this bike to test it out? It has to be in the carb, but I don't know where.