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7Hp OHV Briggs & Straton Craftsman Front Propelled Smokes

Engine smokes and uses oil even after cleaning blowby valve. Are valves allowing oil to get into cylinder? Whers do I start please?

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Sounds like it is the valve seats. However normally it will stop smoking after is runs for a while if that is the problem. Does it run good? Because if it isn't the valve seats then it is the rings. Or a big scratch in the cylinder wall. Then most of the time it will loose compression. If it isn't smoking real bad then you can get an additive to put with your oil that will make it stop, maybe? It is about ten dollars and you can get is at most autoparts stores. It will just take a couple ounces of it. Follow the directions for how many qts of oil you have. After you change the oil in the motor take a magnet and run it through the oil and see if there is pieces of the rings in it.

Posted on Jul 12, 2010

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My 2011 Kia Cerato S has been using a lot of oil. The cylinder head has been re-conditioned and engine serviced. The engine blows smoke every time on starting. What is the probable cause ?


Well,if they did the head,they should've checked the PCV valve also, and so I'd guess the increased pressure of the pristine head has taxed your piston rings,which might've had some blowby anyway. don-ohio (:^)

Dec 04, 2016 | Kia Cerato Cars & Trucks

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2007 ford 4.0 v6 why are all my spark plugdls on passenger side oil soaked but drivers side is fine doesn't smoke did compression test all good not a blown intake gasket had it checked anyone know?


Hi Josh:
I'd put fresh plugs in it and drive it for a week, then check the plugs.
Sometimes you will get high compression readings that are not valid because the rings are soaked in oil so they think they are sealed when they are not.
With the engine off, you could try removing the oil filler cap when the engine is hot, then restart it. A little vapour is OK, a lot indicates bad valve guides, head gasket,or ring blowby.
Also, try checking inside the exhaust tailpipe. If it is oily sooty it is also an indication of possible ring problems.
Review the maintenance history. How many miles on the engine? Could be the engine is getting tired.

Jan 31, 2016 | Ford Cars & Trucks

1 Answer

Why is it getting oil in intake and smoking at start up?


make model mileage year non of which we know piston blowby or valve stems leaking . Motor possibly needing overhaul or replacement

Sep 13, 2015 | Cars & Trucks

1 Answer

Smoke tailpipe /blue/white


Blue smoke is the result of burning engine oil, plain and simple. A high mileage engine will have worn cylinders and piston rings that allow for increased "blowby" with every cylinder firing. Exhaust gasses will sneak past the piston rings and momentarily pressurize the crankcase with each cylinder firing. The puff of gasses in the crankcase blows some oil returning from the valve train back into the valve train area in mist form where it is sucked up by the PCV and introduced to the intake manifold where it is mixed with incoming air to be burned in the cylinders along with some fuel. And that is how blue smoke happens...

The solution is an engine rebuild or a different engine in better shape. The latter is the least-cost solution.

A defective PCV *could* result in more oil burning, but I think not as much as in your case. The keyword is "'99 Plymouth Breeze."
Age is not a friend to the Plymouth Breeze.

Hope this helps you choose what to do next!

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2 Answers

Why is my 2000 kia sephia blowing blue smoke from the tailpipe. it has 86,000 miles. the check oil warning light is on even though the dipstick reads full.


The most common cause of blue exhaust smoke is oil leaking past engine seals and into the cylinders where it then mixes and burns with the fuel. This is most frequently seen in older or high mileage cars with worn seals and gaskets. It only requires a very small amount of oil leaking into the cylinders to cause excessive blue exhaust smoke.

Blue exhaust smoke only at start-up can indicate worn piston seals or damaged or worn valve guides which may also cause a rattling noise. An external engine oil leak can drip onto hot engine and exhaust parts causing what appears to be blue exhaust smoke. Other possible causes of blue exhaust smoke include: piston wear, worn valve seals, a dirty or non-functioning PCV valve, worn piston rings, an intake manifold gasket leak, worn engine oil seals and possibly even head gasket failure.

Oil leaking into the cylinders can cause a rough idle, misfire and fouled spark plugs. In addition, a reduction in power and oil loss can be indicators that the blue exhaust smoke is caused by an internal engine oil leak. Internal engine oil leaks can also allow fuel to mix with the oil in the crankcase which will degrade the oil and prevent it from adequately protecting the engine.

Operating a car with a severely dirty oil filter, air filter or improperly functioning PCV valve can also sometimes result in engine oil blow-by, oil loss and blue exhaust smoke. Periodically checking the engine oil level with the oil dip stick will indicate if there is excessive oil consumption. Higher viscosity engine oil can sometimes temporarily reduce the amount of blow-by; however, this is not generally recommended. Excessive blue exhaust smoke indicates a possible internal engine oil leak that should be inspected by an ASE certified mechanic.

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My toro fh 580v smokes when i start it what is causing it to smoke?


hi.. your inlet valve stem seals are worn out, so oil will be drawn into the inlet with vacuum , as well as fuel...this is why it smokes on start up...quick fix , do an oil change but use a car oil like 15W40 weight oil
im sure you would be using a 10w30 oil now ,using a thicker oil might stop the smoke on start up, or it just wont smoke as much, regardless of using a thicker oil...the valve stems will still need to be replace.....good luck

May 16, 2014 | Toro Zero Turn Rider 74833 Lawn Mower...

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I have a honda dx 1987 it starts up blowing blue smoke we replaced the valve seals and gaskets


In order to get the best gas mileage the Honda motors only have one compression ring and a oil control ring on the pistons. If the oil wasn't changed regularlly then it's time for rings after about 120 thousand miles. they all use a little oil because of this one ring system, about a quart in 1000 miles, even when new. When doing your work did you clean the valve cover real good? the cover has the baffles for the oil control of crankcase blowby and as they fill up with carbonized oil the baffles in the valve cover instead of separteing the air and the oil start passing oil into the PCV systema and into the air cleaner and into the air entering the air intake of the engine gets burned in the combustion gases and out the tailpipe.

Mar 08, 2011 | Honda Accord Cars & Trucks

2 Answers

Low compression in 1 cylinder


I think you could be right. Leaking valves could create this same problem as well.

Jun 04, 2009 | 1998 Ford Windstar

2 Answers

1988 Volvo 740 Smoke from Oil Cap and Dipstick hole when removed


good morning and welcome to fixya
you can try a couple of little tricks, try taking the pcv valve out and cleaning it or replacing it. try cleaning the fuel injection and look for carbon build up on or around the egr valve. you can also do a compression check on the engine and take readings see which one has a major loss spray wd-40 in the hole and recheck to see if compression changes, you might be able to fix just that cylinder if you dont want to fix everything else. good luck and let me know

Mar 12, 2009 | 1988 Volvo 740

2 Answers

Leaking oil


Wash the engine at the quarter car wash. Get a dye at the auto parts store that is used to find engine leaks. You add it to the oil. It becomes visable under ultra vilolet light. Get a UV light bulb for your drop light ( not much money, probably at the hardware or autoparts store) and check the engine with the light after driving a short way. The leak will be very obvious and if you do this before the leak has had a chance to migrate all over it should lead you to the problem.

good luck

Feb 08, 2009 | 2000 Chrysler Sebring

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