Briggs and stratton engine that smokes only when you first start it up what cause this?
If the engine is four-cycle, the valve seals may be worn, causing a small amount of oil to seep into the piston cylinder or combustion chamber. If it is two-cycle, the oil/fuel mix may have a little too much oil.
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We need more info on your particular engine. It could be anything ranging from adding too much oil, worn piston rings, or the fact that when the engine is started, the carbure…tor is being choked (cutting off much of the air supply) causing the engine to obtain air from elsewhere in the engine such as the crankcase or through leaking gaskets, etc..
Answer . if it smokes just when started and then quits smoking, it may have to much oil in it, check oil level, if it keeps on smoking then you have a ring problem what TYP…E of oil you have in it,. When they are shipped there is oil injected into the bores through the spark plug holes, this will burn off for a while, so if it's new then it's no problem.
Answer . Probably has something to do with the compression release or valve adj. Look at troubleshooting in the manual.. You did not say if your lawnmower is gas or elect…ric.. Problem (not starting) could mean the spark plug is fouled, improperly gapped, or damaged.. Does it crank but the engine never catches? You didn't say. Is there an electric starter? Outlet might not be live - battery could be weak or dead or there could be bad connection or bad starter motor.
What causes a mower engine Briggs Stratton 25hp to surge with gas and flood out after starting normally?
The engine is receiving more gas than it can consume. Sometimes the carburetor needle valve will vibrate to the open position or the float valve will stick open. Also, a foule…d spark plug will not provide sufficient spark to ignite the fuel. Check out a lawn mowers and small engines repair manual from your public library for troubleshooting and repair procedures.
Why does Briggs and stratton lawn mower engine start fine but then the idle goes way up and way down to a sputter?
there are many reasons for this , it could be running lean by the carb not adjusted right.look at the engine from the carb side.there are small rods that connect to a arm that… goes back and forth as the load on the engine changes. this is the govenor arm. follow the rod to the throttle part of the carb when the engine is run ning, the rod will move and the govonor will move it. there is a screw that adjusts the amount of travle this govonor does. turn this screw in and the engine should have a better idle you want it to be steady and change when the mower deck is engaged or disengaged.this is the easy one b ut without seeing it or hearing it , this is the easyiest. after the idle is steady, the carb might need a adjustment for idle speed and enrichment. good luck, Erich
As a first guess I'd suggest that you're getting a little "cylinder washdown", meaning that an injector or the carb is allowing too much fuel into one or more cylinders and it…'s picking up some of the oil. That can be caused by a carb with a sticking float that allows fuel to dump into the intake after you turn off the engine... assuming that it's a carburated engine. OR an injector that's leaking a little and when you turn off the engine it's allowing the fuel to leak in much the same way. It could be other things as well but this is a more likely cause and certainly a good place to start. could be valve seals. oil left in the heads when engine is shut down gets by the seals when engine is stopped ,and leaks into cylinders. this is ONE thing that could cause it, I'm sure there are other causes, that are possible.
That question will need much more detail before it can be answered.. For an engine to run it needs fuel, air and spark. Without knowing which of these the engine has or does …not have the question can't be answered.
The most common cause of engine surging (rev up and down) is a dirty air filter.
bad gas, dirty carb needs new sparkplug. youtube has repair vids on how to do what. user (davidsfarm) has great tips
What will cause a muffler to glow red immediatly after starting the engine on an 18 hp Briggs and stratton?
One of the cylinders is probably not firing. Try pulling a each plug wire alternately while the engine is running. One of them probably won't make any difference and the other… will probably kill the engine. The one that does not make any difference is the one that is causing the trouble. You will have to find out why it is not firing.. What is happening is the cylinder that is not firing is letting the gas flow through the cylinder and into the exhaust where it is igniting in the muffler.
I have a 14.5 Briggs and Stratton engine on a Ranch King riding mower that will not start. After spraying starter fluid into the head, and air cleaner it fires for a second, b…ut will not run. It is getting gas.....coil??? or something else?
Most likely it is the armature (coil) failing, though in limited circumstances it could be fuel-related.
In Lawn Mowers and Garden Tools
Try servicing the air filter.
In Emissions and Exhaust Systems
What causes a car to smoke blue only when started in the morning than will do fine after thatit will not smoke when driving or start up only on the first start up of the day?
I believe your valve seals are leaking until the engine warms up. On my 350 chev you had to take the spark plug out and pressurize the cylinder, remove the valve retaining cli…p and remove rubber valve seal and replace. The key is to keep pressure in the cylinder so you don't drop valve inside.
In Lawn Mowers and Garden Tools
Why does Briggs and stratton 3.5 engine only stay started when starting fluid is sprayed in the carburetor?
Because your carburetor is not getting fuel to the engine - could be a plug in the fuel line or it could be dirt in the screen in the pick up tube in the carburetor. I would s…uggest you clean the carbutator.
In Oil and Oil Filters
Black smoke= running to rich(too much gas) try replacing your air filter or your carburetor might be out of adjustment, choke might be on White smoke=burning oil. Make sure t…here isn't too much oil in the crankcase, use the proper grade oil- sae 30w. wore piston rings or scored cylinder wall. could be a few more internal engine failures.
In Lawn Mowers and Garden Tools
Could be plugged fuel filter, sticking float:Change fuel filter, clean carb.