Question about Briggs AND Stratton Intek Briggs & Stratton 900 Series Horizontal OHV Engine - 205cc, 1in.dia

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Oil Going From OHV To Carburetor and smoking what causes this

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Either the crankcase is not venting are you having Blow by on your piston rings causing excessive crankcase pressure.

Posted on Feb 05, 2017

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To much oil . out of time

Posted on Feb 05, 2017

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WHY DOES WHITE SMOKE COMES OUT OF THE SIDE


If it's coming from around carburetor area than you most likely have a blown head gasket. It's building up to much pressure in block and its blowing out your vent tube.

Jul 28, 2014 | Briggs & Stratton Briggs Stratton Intek V...

1 Answer

Spark plugs foul immediately


Fouled plugs may be caused by oil leaking into the cylinder. Does it smoke when running (cold), are you using up the crank oil. Black smoke is excess gas comsumption, blue smoke is oil burning. If your plug is fouled with black carbon, you are most likely running to rich.

Apr 07, 2014 | Briggs & Stratton Briggs Stratton Vanguard...

1 Answer

Overfill oil


Sounds like the engine is tired. Blue smoke is oil burning. Hard starting is oil on the spark plugs and/or low compression. This also can be due to someone adding too much oil.
Sometimes, the carburetor Needle valve hangs u pa bit and the Crank case oil gets mixed with gas so now the oil level is high. Too much oil in a motor is bad too, that would cause theblue smoke too.

Jul 20, 2013 | Yard Machines 11A08MB006 22Inch 139cc MTD...

1 Answer

14.5 horse I/C ohv with oil


sounds like the needle valve and seat in the carb is bad

Jun 02, 2012 | John Deere Garden

2 Answers

18.5 hp Briggs & Staratton ELS 500 Smoking after oil and filter change and I did tilt the mower to drain the oil. So how do I get it to quit smoking?


First off, I did not write this article, but it is very informative and in depth:

Easy Lawnmower Repair"Clouds of white smoke."
This is one of the common complaints we see at the small engine shop in the Spring. The complaint is usually the same, "I put the Tractor/mower/tiller/snowthrower up for the season and it was fine all of last year. This year I take it out and I start it up and after a couple of minutes it starts blowing white smoke very heavily. Are my rings shot?"
Generally billowing clouds of white smoke are from one of two things. Either the crankcase breather has failed or the oil is contaminated.
The crankcase breather vents the gases and excess pressure from the crankcase and sends them through the carburetor to be burnt in the combustion process. Some breathers are nothing more than a reed valve that opens and closes as the pressure changes inside the crankcase from the piston's movement. If this reed breaks, bends or otherwise fails, then excess oil is pulled into the carburetor and the result is a lot of smoke. Other breathers are screen or filter type and when they become too fouled or broken down to function, same result, lots of smoke.
Diagnosis is done by looking for two things, oil in the air cleaner/carburetor and black oil soaked or heavily carboned spark plugs. Since oil is being fed directly into the cylinder, the plug will foul very quickly and probably also affect engine performance. Breathers can fail at any time, often they will fail over the winter as the oil that's built up on and around them solidifies and just generally plugs things up.
Repair is a pretty simple matter on many engines, just replace the breather. You can try turning the reed around on the reed type breathers, but personally I just replace them. Sometimes all they need is a cleaning though, so give that a try. Most breathers will run from just a couple dollars for reeds to maybe twenty dollars although a few that are incorporated into the valve cover may be upwards of thirty dollars.
Reeds and complete breathers are available from most small engine shops for most engines. Online suppliers such as Jack's Small Engines, and M&D are excellent and reliable sources for parts as well.
To replace a breather, follow the tube or hose from the back of the carburetor or air filter assembly to where the breather is mounted on the crankcase. Most are simply attached with two screws but may be under the flywheel requiring flywheel removal. If it's incorporated into the valve cover, just replace the valve cover. Some are cartridges that plug into the valve cover, very easy to replace.
The other common cause for heavy white smoke, especially in mid-size Briggs and Stratton and Kohler engines, (12-20hp) is from contaminated oil. The most common contaminant will be gasoline that has leaked from the carburetor. We have had at least one engine that had a crankcase full of water, this was probably a case of sabotage from an irate neighbor.
The diagnosis is simply to examine the oil. It should have little to no smell of gasoline and should not be overly thin or muddy brown, gray, white or chunky like spoiled milk. Do not under any circumstance attempt to start an engine with oil that fits any of these criteria. The most common cause of mid-size Briggs and Kohler engine catastrophic failure we see in the shop is from gasoline diluted oil causing the rod to overheat and break just above the crank journal.
Gas will get into the crankcase when you have a carburetor that is leaking past the needle. This leak is generally caused by either a float problem or other problem keeping the needle and seat from sealing. If there is gas in the crankcase, then the recourse is a carburetor rebuild or replacement followed by an oil change. The reason that this is such a common Spring problem is that if you leave any gas in the carburetor, it will evaporate and leave behind a varnish coating that can prevent the float assembly from functioning. Also, and even more common, the ethanol in today's fuels will ruin needles and seats, preventing them from sealing the flow of fuel off, which causes the carburetor to overflow and leak into the crankcase. Gas can also get into the crankcase from a fuel pump that's leaking, so if you have a pump, that needs to be checked as well.
These items are often the result of improper storage. I can't stress enough the importance of proper storage of outdoor power equipment.
If there is water in the oil, then several crankcase flushes with kerosene and a few oil changes may clean the engine out. However engine disassembly may also be called for to remove all the muddy deposits and ensure that the oil channels are cleaned out.
These two items are the most common causes of a lot of white smoke. We do see a few OHV engines come in and have blown head gaskets. Usually this is on a Kohler and often the oil is leaking down onto the exhaust manifold and not into the cylinder. A leaking valve cover gasket will also do this.
If the plug isn't fouled out, and the oil is normal, then check closely for a leak. Spray carburetor cleaner on the head to clean all deposits off and then run the engine for a bit. Then check for a leak again. Some talcum powder thrown onto the surface will help to spot a leak as well.
Hopefully one of these will be the solution and you won't be purchasing a new engine. Good Luck!

Oct 04, 2011 | Briggs & Stratton Briggs Stratton Intek V...

1 Answer

I have a 14.5 HP Intek OHV model 287707 that started blowing gray smoke out of the exhaust after running a couple minutes, then it dies but starts right up again. Also, the oil smells like gas. No...


Yes it is a carburetor problem. The float and needle are stuck open and it is flooding fuel into the crankcase. That is why your oil smells like gas and you have gray smoke. I will bet that it is hard to determine the exact oil level on the dipstick.

First, do not run the engine until corrected or you risk engine damage. The fuel in the oil acts like a thinner destroying the lubrication properties of the oil.

Second, take the carburetor off and clean/rebuild it. When you are satisfied with the carburetor, including the operation of the float and needle, reinstall.

Third, change the oil, for the reason stated in the first.

Fourth, with fuel in tank, note level to make sure not changing by draining through the carburetor.

Fifth, remove the spark plug and turn the engine over a few times to get oil back to the surfaces that need lubricated on startup. Reinstall spark plug

Sixth, check fuel tank level for drop, if no drop, Try starting the engine.

I hope this helps you get it going.

Aug 12, 2011 | Garden

1 Answer

Briggs & Stratton Vertical OHV Engine 18 hp blowing white smoke engine run great but a lot of smoke and also have oil being spit out of the black hose that come from engine to the carb.


Check your oil.

If it is overfilled, milky, or smells like gas. Your going to need to change that ASAP. It sounds like the float has stuck in the past or is still sticking, and it has flooded the crankcase with gas, which has mixed with the oil. And because it is overfilled it comes through the breather hose into the carb. This also explains the smoke most probably because the oil is spewing in the carb through the breather and being burned.

Jul 05, 2011 | Briggs & Stratton Briggs Stratton Intek V...

1 Answer

Have a toroZ5035 mower 90 turn) with kawasaki engine. **** smoke appears on start up, but goes away when warmed up. choke must be kept on at least halfway or motor dies. changed plugs and cleaned air...


**** smoke sounds bad, If what you meant was white smoke then I know what is going on with the mower. The white smoke is from the extra oil in the cylinder head. There are tow causes for this. #1 the engine rings are worn and will not prevent the oil from running into the combustion chamber as the engine sits. #2 the carburetor is leaking fuel into the oil and thinning it out. This thin oil bypasses the rings easier and drives the oil level up too. I would recommend a carburetor rebuild. You can get parts from a local dealer like www.arcolawn,com Good luck barterjoe_64.png

Mar 23, 2011 | Toro 52" 27hp Z Master Zero Turn Lawn...

1 Answer

Yardman intek 12A-979L401 runs with white smoke and stops, the ohv valve cover is full of a oil and gass mixture, the oil fill has the smell of gas in it


The carburetor has probably malfunctioned and the needle valve is staying open. It is responsible for most of your problems. Oil will HAVE to be changed, Don't run it till fixed. Pull carb, disassemble and clean noting condition of internal parts. Install rebuild kit if possible. The white smoke is a result of either water in the gas or gas in the oil....or a combination of both.

May 29, 2010 | Briggs & Stratton Garden

2 Answers

Briggs and Stratton 22hp v twin OHV smoking badly


First thing to do is pull your dipstick and check for broken or missing O-ring also as you pull it, look to make certain that it was seated properly and all the way locked. If either condition exists, you will be leaking into the crankcase which will cause your symptoms

Jul 11, 2009 | Briggs & Stratton Briggs Stratton Intek V...

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