I have a 17hp briggs that blows out blue smoke whan you start it up and then it stops as you run it
It just whanever you first start it
:confused:

Hi,
Newer engines blow smoke when cranked because of the choke and the EPA regs that require clean running. Should dissipate and clean up quickly. OHV's even older ones do it.
Peace,
Clarke

Blue smoke is generally a sign of oil in the cumbustion chamber. A puff when starting isn't a big deal, but if it continues to smoke while running it's probably time for a ring job.