F150 problem!

[HydroliftErik]

Hi,

today, i drove a customers Yamaha F150 -13.
the engine has run 9,8 hours,
but today, the engine started to smoke a lot, and lost power and rpm.
i stopped immediately, lifted the cowl, it was some smoke around the air intake and oil level and color looked OK.

does anyone have any idea?

[99yam40]

if not broken in properly cylinder walls and piston rings could be a problem.
Do a leak down test to make sure they are sealing properly