GCrews25
New Member
Not exactly sure what is going on. At mid to higher RPMs I'm getting a loud knocking sound that doesn't sound great. As soon as it starts making this noise I have to grab the clutch and slow down a bit and it goes away until I start moving as fast again. If I keep going at the same speed once the knocking starts, then she slows way down and will keep slowing down until I grab the clutch again . I'm running my last tank of break in mixture through now, and I was told to use 16:1. I am pretty sure the chain isn't hitting anything, so I have no idea what it could be. First build, so I am also pretty new at this... Any help would be great!!