What is reason for engine oil coming out of exhasut manifold
When engine is turned on engine oil comes with smoke through exhast manifold also the smoke is not white it seems to have that fuel is not burning properly. also tell me what is back compression in case of engine oil
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Re: what is reason for engine oil coming out of exhasut...
Hi! You are asking good questions, first the oil, I presume your vehicle is of high mileage? and possibly had a hard life with maybe late service intervals? There are a few possibilities oil is being burned, first and this relates to your last question (Back compression) is worn compression piston rings, the compression of the combustion seeps past these and sends pressure through the oil scraper rings (Last set on the piston) increasing crankcase pressure which in turn forces a film of oil out of your breather pipe, the outlet is usually located on the air filter so it is drawn into the cylinders and is burned causing poor ignition and smoke from the rear. Second and possibly combined is valve guide wear, the valves allow oil through their worn stems and seals causing a smoke haze, this usually clears a lot when engine reaches operating temp. I hope this epic has clarified your query? please press the Blue Button for my Free! effort. Thank You! Paul 'W' U.K.
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The engine was smoking very badly? Was any smoke coming out of the tailpipe? If not, either the exhaust manifold is broken or off the vehicle, or the exhaust pipe is broken, has a hole in it, or it is completely missing! Is it really loud?
You SAID the engine was smoking. But if you said that in error, then perhaps the exhaust system is okay, but oil is getting into the cylinders. Check for a PCV (positive crankcase ventilator) valve that may not be working right. Another thing that can make heavy smoke come out of tailpipes is a head gasket leak, with antifreeze getting into the cylinder chambers. How is the oil level and the coolant level? If there is that much smoke, it is advisable to not drive the vehicle for any reason except an emergency!
A very small amount of oil weeping onto something hot, manifold, turbo etc can give off considerable smell with little smoke. What's the miles? When was the last service? What condition is the engine? Worn engine can give pressure in engine forcing oil fumes/vapour out of breathers onto hot surfaces which then enter car ventilation system.
Oil. if the smoke is coming from between the engine block and the firewall then its probably oil on the exhaust manifold. Make sure that your engine is not leaking oil from the seals and make sure the oil cap and dipstick are in place, start your car, with the hood up and observe the smoke if its bad then id take it to a mechanic but if its only mild then providing your engine isn't leaking oil it should burn off within a few minutes of the engine being started, i say watch the smoke because if it is leaking oil onto the exhaust in great amounts then it is possible it could catch fire.
SEE WHITE SMOKE YOU HAVE BLOWN HEAD GASKET OR INTAKE MANIFOLD GASKET LEAKING.IF YOU SEE BLUE SMOKE ENGINE BURNING OIL DUE TO WORN VALVE GUIDES AND WORN VALVE SEALS AND WORN PISTON RINGS. CHECK SPARK PLUGS IF THEY OIL SOAKED ENGINE BURNING OIL.
Quit driving it. You have blown a intake manifold gasket or a head gasket. 3.4 engines are known for blowing intake gaskets. Check your oil, make sure it is not exessive or milky in color. White smoke is caused from water/coolant entering the cylinder.
You don't say where the smoke is coming from, but if it's from under the hood you may have spilled some oil on your exhaust manifold when you were refilling the engine. If so and there isn't too much oil on the manifold it will soon burn away. If you look and see a puddle laying in a pocket somewhere along the manifold you can wait until the car cools and wipe the puddle up with paper towels and clean it as best as you can with soap and water. Then rinse it off with a hose. If you find this is the problem be sure and let the car cool down if it's hot because cold water could possibly break the manifold. If it's just warm you'll probably be safe to clean it.
Probably a vavle cover gasket leak, small but enought to produce oil, in or on the surface of the motor doesnt take much to a lil smoke from aa hot engine...it could be collectiing in the canals ontop of the motor where the vlave covers sit on the head? or a head gasket problem....inspect it well after you run the car for a lil while, b4 it starts to smoke
Either the cylinder head is cracked or, Is it possible that a stud had once been broken off in the hole(s) and when they were drilled out the drill went a bit to deep and punctured the cylinder head? That is about the only reason their would be oil coming out of the manifold stud holes as the holes are not connected internally to anything.