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Briggs & Stratton 14.5 HP I/C

Asked Oct 28, 2007, 03:36 PM — 7 Answers
This engine is on a lawn tractor and suddenly it starts fine, runs for anywhere from 3 to 5 minutes and then suddenly shuts down with a huge cloud of smoke from the exhaust. I restart it and get the same results. Oil level is fine. I removed the OHV cover and a lot of oil mixed with gasoline came out. There are no broken parts visible and the rocker arms, valve springs, etc. Appear intact. Any ideas will be appreciated. Thanks

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7 Answers
KISS's Avatar
KISS Posts: 12,602, Reputation: 4378
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#2

Oct 28, 2007, 05:42 PM
Oil breather.
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genjiro's Avatar
genjiro Posts: 2, Reputation: 1
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#3

Oct 28, 2007, 06:59 PM
Thanks but please help me out with the term oil breather and where is it?
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bellsouth's Avatar
bellsouth Posts: 1, Reputation: 1
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#4

Oct 28, 2007, 07:28 PM
How to test a safety switche on a small engine
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KISS's Avatar
KISS Posts: 12,602, Reputation: 4378
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#5

Oct 28, 2007, 07:55 PM
I can't quite help you out. Go to Briggs and Stratton Lawn Mower Engines - Small Engines & Outboard Motors - Briggs & Stratton and get the diagram from your engine. Look for the oil breather.

In a car the PCV valve helps the crankcase breathe. When it's stuck open, you get rough idle. When it gets stuck closed, gas gets sucked into the oil.

Small engines have something that serves the same purpose. I don't know where it s on your engine.

You'll probably find your air filter full of oil too.

Here is one: http://thumbs.ebaystatic.com/pict/14...56304040_2.jpg

But, it's probably no where near like the one on your engine.
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MOWERMAN2468's Avatar
MOWERMAN2468 Posts: 3,224, Reputation: 1378
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#6

Oct 30, 2007, 03:38 PM
The breather is easy to find if you follow the black tube that is about 3/8" in diameter from the air filter housing to the crankcase. The breather assembly will be located on the carb. Side of the engine.
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Doorkeeper's Avatar
Doorkeeper Posts: 1, Reputation: 10
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#7

Jan 2, 2012, 04:32 AM
I had a engine do the same thing.What mine was,the engine has a a luminum push rod on the intake valve and if You log (low gas) these engines thay get hot and the bush rod bends enough that the engine will not run.
CHECK THE PUSH RODS!
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DG's Avatar
DG Posts: 1,297, Reputation: 566
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#8

Jan 3, 2012, 06:02 AM
if the aluminum one was on the intake , it's on the wrong one .
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