Valves move up and down together, in unison, is this right? Video attached

[abicer81]

Well there you go.
The only lobe failures that have come into this workshop the lobe stripped thus did not turn with camshaft at all & I have only seen 2 of them
The most usual failure is a couple of the teeth break out due to hitting a rock of a big back fire, although no one ever admits to hitting rock.
A few have come in after a service trying to claim a service warrantee repair. Thus the suspicion to claim that it just happened all by itself.

Thanks for the advice. As for the suspicion, I could understand if it hit a rock but that's not the case since it's a pressure washer, not a lawn mower.

 

[Midniteoyl]

Thanks for the advice. As for the suspicion, I could understand if it hit a rock but that's not the case since it's a pressure washer, not a lawn mower.

You will want to look at the pump too. Make sure its ok.