Joel
XS400 Enthusiast
Suddenly my bike is having trouble running with the petcock in the "on" position. I switch to reserve and it runs like normal. When in "on," it goes for a few minutes and then starts to sputter and pop and easily stall. I pulled off the gas tank and pulled off the petcock. Since it doesn't exactly pull apart, cleaned it with paint thinner and blasted some air through it. When I put it back together, same thing happened. Any ideas?