Hello World of ATV users. My Valves make a popping sound when it cranks over seems to be just on the intake side. Spark plug is out. Anyone else ever seen this on ATV??? Lobes are bigger (newer than my other) on this camshaft. starter sounds like
its spinning normally just a pa pop pa pop pa pop sound. I tried to upload a video would not accept the type of file. Thank you for your time and any advice. Happy Riding.