Clicking sound when rotating crank by hand

#1

Clicking sound when I turn crank on predator 79cc, and makes similar sound on 212. The 212 is a stage 2 with a billet rod and don’t know how it could make any weird sounds. Has good oil clearance and everything. What could this be. Plz HELP!!!!
 
#2
Take the side cover off and look close for contact marks that’s where your click is gonna be
I have a fixture from OldMiniBikes made from plexiglass that’ll let you bolt it up and keep the cam and crank properly located that’s how I clearance my engines
 
#4

Clicking sound when I turn crank on predator 79cc, and makes similar sound on 212. The 212 is a stage 2 with a billet rod and don’t know how it could make any weird sounds. Has good oil clearance and everything. What could this be. Plz HELP!!!!
Do the motors currently run in this condition and how long have they been running?
I would hope the installer of the billet rod rotated the crank assembly, if they had any knowledge they would have noticed a clearance issue..
Does the 79cc motor have oil in the crankcase?
 
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