How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Curtis B. Your Own Question
Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 12892
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
30244710
Type Your Small Engine Question Here...
Curtis B. is online now
A new question is answered every 9 seconds

Mower has about 30 hours on engine--well maintained---starts

Customer Question

mower has about 30 hours on engine--well maintained---starts right up---
warms about a minute----at 3/4 throttle------suddenly blows enough oil/smoke out the exhaust to fill a room---still runs but rpm drops some-----will suddenly clear and run strong with no smoke----this is without changing throttle speed----this will continue for 30-40 seconds---then smoke for 30-40 seconds----repeat--repeat--repeat---
when it is blowing smoke the crankcase pressure is very strong and blowing out the filler tube---but this pressure goes away when the cycle is not blowing oil/smoke out the exhaust----never have seen a problem like this---what is going on here?
Submitted: 1 year ago.
Category: Small Engine
Customer: replied 1 year ago.
(Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Expert:  Jay replied 1 year ago.
What type of engine is this?