The Kawasaki STX 160 is a popular jet ski, known for its performance and reliability. However, some owners have noticed recurring issues with the fuel system that can make for a frustrating experience on the water. If you’ve ever experienced unexpected power loss, surging, or trouble getting over half-throttle, you’re not alone. The good news is that these issues aren’t just random—they often trace back to the fuel pump and breather setup, and they’re fixable with a few tweaks.
Kawi Performance recently shared a helpful video breaking down these fuel system quirks and offering some straightforward fixes to get your STX 160 back to its full potential. The root of the problem is usually the small fuel pump Kawasaki uses, which can struggle under higher demands. This can lead to a few annoying symptoms, like stiffening when you hit full throttle, surging in the mid-range, or capping out around 50% throttle.
They also dive into a common issue with the breather system. If the breather isn’t properly aligned, it can create vacuum pressure in the fuel tank, which restricts fuel flow. The video guides you through checking the breather direction and removing the access door to ensure the breather hose isn’t kinked or twisted.
One simple fix they recommend is turning the breather port backward to help prevent water clogging, which can also interfere with the fuel pump.
So, if your STX 160’s performance has been a bit off, Kawi Performance’s video is worth a watch—it might just help you get the smooth, powerful ride you’re looking for!
