Tappet sound from CBX bike
I replaced all the 16 hydraulic tappets of my
Honda CBX 750P motorcycle a month ago.
However, there is a sound every time I start the
bike in the morning. But after five minutes on
the road, the sound disappears. I was told the
pump which brings the oil to the engine was
not functioning. Thus, insufficient oil makes
the tappet sound. Is this true?
You may be right. For the hydraulic tappets
to work, there must be sufficient oil pressure
and if the oil pump or the hydraulic tappet
guides are worn, you would get this "clatter".
Try using a heavier weight oil, i.e. if you are
using 10W - 30, switch to a 20W - 50, and the
slightly higher viscosity may solve the problem
without having to pull out the pump.