Return to the Tractors Forum | Post a Follow-Up

 o
Engine smoking when on an incline

Posted by ocmoses 7 (My Page) on
Mon, Apr 14, 14 at 4:21

I have a Scotts by Murray lawn tractor with a 15hp Briggs and Stratton engine. The engine runs perfectly until the mower is operated on a sideways incline. In this position, the engine starts smoking profusely and starts skipping. When the mower is returned to level ground, the smoking and skipping stops. As always, any help or ideas are appreciated.


Follow-Up Postings:

 o
RE: Engine smoking when on an incline

This is most often due to the engine oil level higher than it should be. With Briggs engines, the oil level should be checked while the machine is sitting on level ground. The dipstick should be pulled and wiped clean, and then reinserted and screwed down completely and then unscrew it again to read the oil level.
If the dipstick is only pushed down against the top of the tube without screwing it down, the oil level you set based on that reading will be somewhere between 1/2 quart to 1 quart over the correct fill level.
Another thing that may cause this is due to how the tractor is driven in conjunction with a slope. If the tractor is being driven fast into a turn that includes some sloping terrain, the combined slope along with the sideways force imparted by the turning action can make the oil in the sump run to the outside of the turn (inside the sump) and climb up the inside of the crankcase walls. If the oil mass moves high enough for the crankshaft to strike the oil, it will make a huge splash, sending oil droplets directly against the crankcase breather. Some of that oil will find its way back into the intake and get fed to the engine.


 o
RE: Engine smoking when on an incline

Plus ensure that there is no fuel in the oil as well.


 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!


Return to the Tractors Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.


Learn more about in-text links on this page here