Question about 1999 Toyota 4Runner

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Smoke in exhaust

Oil in the air intake. This seems to be the cause of the smoke in the exaust is there a fix to keep this oil out of the intake?

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You have a bad PCV valve, i don't have the time right now to help you locate it but any parts store will help you locate it. THe valve goes into the intake and has a check valve in it. THe valve is stuck open sucking oil into the intake.

Posted on Dec 24, 2008

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Car smoke sometime when I start it up.


Smoke from where exactly? Under the hood? From the exhaust? You need to be more specific.

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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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is the smoke coming from under the car or out the exaust pipe?
under the car ! you have an oil leak and its probably landing on your exhaust pipe which by the way can ignite and go on fire if the pipe gets too hot. if its out the exaust ! computer or air intact problems. worst case: rings are bad and oil is mixing with the gas in the piston chamber. Hope this helps a little good luck and God Bless

Feb 03, 2014 | 2003 Chrysler PT Cruiser

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White smoke coming from engine and exaust.


I'd have to see it in person. A small amount of coolant in the cylinders can make a big cloud of white smoke. So a head gasket or intake gasket could be leaking but yet be tough to find. If you start loosing coolant you'll know. Meanwhile I would probably not drive it very far from home for a few days/weeks.
Keep in mind, if it is very cold where you are, regular water in the exhaust is going to cause "fog" out the exhaust.

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4g64 engine white smoke problem and oil consumption problem. 1 liter a week


white smoke is a water leak on the cyl head , blue smoke is burning oil , black smoke is over fuel or a blokage in air intake or exhaust ! is it smelling ike steam or oil or fuel out of the exhaust ?

Sep 18, 2013 | Cars & Trucks

1 Answer

Oil found in air intake


you most likely blew ur head gasket... needs to be fixed befor you keep drivng it or greater damage could be done

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Overfilled engine oil on a 2003 porsche 911 turbo.now smoke comes out of exhaust--HEAVY Smoke.I drained engine oil again(along with the turbo)put in 9.25 qts of oil,still having heavy smoke.


The oil was overfilled this could cause a large amount of oil to enter the exaust and possibly the intake depending on crank case ventilation conditions. If you are positive engine oil levels are adjusted perfectly(warm engine check level running for dry sump oil level ect.). Time is needed to burn off oil residue in exhaust system and intake. Warm up engine low rpm no load, drive vehicle slow with little boost over 5 mins slowly raise rpms for another 5 mins keep driving smoke will burn off while making other drivers mad. sorry just smile and wave.
The engine oil on this vehicle should only be changed by an experinced tech.

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MY SUZUKI GET TOO MUCH WHITE SMOKE,BUT I HAVE PUT ENGIN FLUSH, CHANGE THE OIL AND THE OIL FILTER,ADD ANTISMOKE TO FUEL BUT NO CHANGES PLEASE!!!


There has been an issue of Suzuki engines smoking due to the PCV. valve or the baffles under the valve cover. One method of curing this is to place an oil separator between the vacuum line from the intake and the PCV. This will make for the need to keep an eye on it as it will fill up with oil eventually thus negating the purpose of placing it there in the first place. I think the big fix would be to remove the valve cover and check the oil baffles and filter therein. The problem is that oil builds up at the location of the PCV and is getting sucked into the intake via the vacuum hose to the intake. The quick fix? unplug the PCV and plug up the vacuum hose to the intake. This will get you by until you can get it to a mechanic. Anyway, That what I know. hope it helps

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Why does my 86 chev 350 smoke oil out exaust only sometimes


on a truck this old, I would say that the rings are worn, and the valves are leaking, maybe.

As it warms up the dynamics may change, with different driving and weather conditions making the system smoke or not smoke.

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Not the oil pump, the most likely cause is the intake and exhaust valve seals, this accounts for the smoke on start up

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