Join Date: Jul 2010
Location: New Braunfels, Texas
TRX90 Hesitation / stall
I just bough a 2003 TRX90 for my son. It idles smoothly, and starts on the 1st or 2nd pull, and runs good through the RPM range. However, it will consistently try to stall if I open the throttle up too fast from idle. If I ease into the throttle, it runs great. If I peg it, and hold it from idle- it dies. If I let off, it will catch and continue to run.
I have replaced the carb with a brand new one - absolutely no effect. Tuning the idle and mixture screws has not helped. I have cleaned the spark plug and changed the inline fuel filter- also no effect.
The engine does not smoke, and the oil looks good.
Could this be a CDI starting to fail? Bad spark plug cap? Wrong spark plug gap? I already wasted money on a carb, and don't want to keep replacing good parts...
(anybody need a carburetor?)