Hi I have been helping a friend build his first motorized bike. We are having trouble with engine not running smooth and a knock sound. Any ideas what and where to look to fix. Thanks
Could be a host of things. Would look around for a thread that sounds like a similar problem. Be sure to look in the sections for 2 or 4 stroke, depending on what manor of engine you have.
Hi Jill. You can make a post in the General forum or troubleshooting forum.
Be sure to include what kind of kit you guys have and be a s specific as possible as to where the sound is coming from, ect. It's probably a simple fix.