So I have a 1999 polaris scrambler 500 and it’s blowing exaughst out the air intake. I check the valve spacing and set them to what the manual said, and it’s still doing it. Not sure what would be the cause maybe a mouse got up in the exaughst and is blocking it or the pack fell and is blocking it. Only thing I can think off I’m gonna take of the pipe tomorrow and see any idea would be helpful