I just bought a 2013 XP 900 with no compression and discovered the cam tensioner lost prime so the valve timing was off after the chain skipped. I rotated the engine to TDC and when you line up the cam sprocket parallel with the head on the intake side the cam lobes touch the valve before it is totally lined up. my question is… Is there intake valve overlap and does the intake valve open before TDC? Sorry for my ignorance lol
Cam timing?
I just bought a 2013 XP 900 with no compression and discovered the cam tensioner lost prime so the valve timing was off after the chain skipped. I rotated the engine to TDC and when you line up the cam sprocket parallel with the head on the intake side the cam lobes touch the valve before it is totally lined up. my question is… Is there intake valve overlap and does the intake valve open before TDC? Sorry for my ignorance lol
