The Aprilia STX 150 has been experiencing some fuel system issues, says the motorcycle community. Some owners have experienced everything from inconsistent fuel flow to the bike dying while riding. There seems to be a higher than average occurrence of these problems in certain model years, which has caused people to talk about bad design or maintenance requirements. DIY fixes are out there for some riders, but others have had to take it to the pros. Many have been left wondering just how long the STX 150 will be reliable, and if Aprilia have sorted these issues out with newer models.