- Jul 3, 2007
After some net searches, I need some help. I just purchased a 1999 KDX200. It's all stock except FMF Gnarly pipe and silencer. I ride mostly 1500-4000 feet above sea level. I am running Red Line oil 50:1, dissasembled and cleaned carb and air box. Here is my problem; runs good from low to 3/4 throttle but at WOT is sluggish and runs like the ckoke is on. I am also blowing oil out the exhaust. Jetting is stock, float level is good, new spark plug and looks clean, air filter clean. My next step is to clean the KIPS vavle and repack the silencer. Does anyone have any other suggestions?