Pcx 150 will click when pushing sideways.

1, if your car is an ejector engine, the valve clearance is large. Just open the cylinder head cover and adjust it. 2. If you are a small chain machine, there are two possibilities. One is the large valve clearance, and the other is the loose time gauge. If you are not good at hands-on, you'd better find a motorcycle mechanic instead of disassembling it yourself.