Troy built riding mower


Old 02-21-18, 11:18 AM
Thread Starter
Join Date: Feb 2018
Location: United States
Posts: 2
Received 0 Votes on 0 Posts
Troy built riding mower

I have a Troybuit riding mower with a Briggs and Stratton 17.5 hp.Modle#31D707 Type yard has a slope on it and when I go to the left with the mower leaning towards the left.It will blow a big white puff of smoke out .Would you have any clue what this would be.
Sponsored Links
Old 02-21-18, 11:26 AM
BFHFixit's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Jun 2007
Location: USA.
Posts: 1,836
Received 0 Votes on 0 Posts
Check your oil level, sounds like depending on how far it leans, the carb is on the left side of the engine on these (Intek?) It might be sucking a bit into the carb.
Is it just a puff and gone or does it continue?
Also these engines have a weak spot in the head gasket that could be getting through in to the intake.
Old 02-21-18, 10:43 PM
cheese's Avatar
Forum Topic Moderator
Join Date: Jul 2001
Location: USA
Posts: 17,270
Received 22 Votes on 19 Posts
If it only does it at this spot, I would say it's normal and the oil is getting high enough in that spot to blow through the breather or even the side of the piston.
Old 02-22-18, 02:47 AM
Join Date: Jan 2010
Location: North East Kingdom of Vermont
Posts: 2,533
Received 1 Vote on 1 Post
It's a long shot; but if your DipStick has a Part Number on it, I'd just check it to verify that it matches what is supposed to be used with that engine.

My Mechanic scratched his head for over a year with a Customer who had a similar problem . . . . and it turned out that Briggs (or someone else along the line) had installed the wrong DipStick, and the Customer had been slightly over filling the crankcase for years.

The problem only made itself evident when he was mowing an area similar to what was earlier described by this thread's OP.
Old 02-26-18, 02:40 AM
Thread Starter
Join Date: Feb 2018
Location: United States
Posts: 2
Received 0 Votes on 0 Posts
It is a puff of smoke and then it is gone. I am going to change the Head Gasket and see if that will eliminate the problem.Thanks for the information.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Ask a Question
Question Title: