Lawn mower problem?

Question

Older Lawn Boy two cycle engine, has white smoke in the start up,clear out after 30 second , run for 5 minutes than die out,would not restart right away unless wait 10 mintues then repeat the same thing again, what the problem might be?

Answer 1

Your valves may be worn a little.either you have too much oil or not enough oil.Also sounds like magneto is old it shuts down after warm up.new mag from small engine shop will run you about $20.00.Good luck

Answer 2

Sounds like you have done the rings or have a faulty spark plug

Answer 3

Lets start with the dies and wait before it starts, this is probably a plugged air vent in the gas tank cap. Remove the cap, and the gasket from the cap, then clean the air vent hole with a needle. Next remove the fuel line from the carburetor and check for fuel flow.  This will be messy so do it out doors and use a catch can for the fuel.

  Once the fuel flows easily to the carburetor, it should run. If not, then it's time to clean the carburetor and pay particular attention to the needle valve in the bowl.  You may want to get a sevice manual for the engine and understand it completely. Use fresh gas and oil mix for your test runs, then mix any old gas with the fresh mix about 3:1.  Good luck.

Answer 4

its burning oil

get a new one

good luck