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Too much fuel being put in the engine and it gets by the rings and if it has a mechanical pump attached to the motor, it can be leaking inside and running into the crankcase. Too much and the oil will be so thin that it no longer lubricates and you loose a bearing.

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Q: Oil that smell like fuel can be caused by?
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What does linseed oil smell like?

I doubt that Linseed Oil is generally described as noxious. It does not hurt, injure or corrupt. Many would consider the odour to be pleasant


Why does transmission oil smell burned?

An indication of overheating of some sort. Could be caused by a number of things. Clutch slipping, whether from normal wear and tear or from driver riding the clutch. Also, could be caused by the transmission being tasked beyond it's limits, like towing or carrying a load heavier than the vehicle is rated for.


Can a broken seal in the exhaust where it connects to the manifold cause fuel to go in the oil and prevent the car from starting?

No. The exhaust manifold only carries burned exhaust fumes from the engine to the rear of the vehicle. It has nothing to do with the oil or fuel system. It also cannot prevent the engine from starting. However a clogged catalytic converter can cause the engine not to start. Fuel in the oil is caused by a leaking injector on a FI engine or a bad needle valve and seat of an carburetor engine.


What happens when oil burns?

For one thing, you will smell it. It smells kinda' like tar. You will also have smoke coming out of the exhaust pipe. Your spark plugs will also look kinda' black from burning oil because the oil is probably being burned with fuel. I'm not sure about this part, but I think that oil is probably getting into the pistons of the engine. That would mean you have a leak somewhere. I think this can usually be fixed by replacing the gaskets. Call an automotive store for more specific information.


Why is there gas in the oil on your s10 pickup?

Cylinder misfire, somthing causing too much fuel to be injected, such as a bad sensor. Check engine light should be on with this condition, unleass you had a recent no start problem that would keep adding fuel while your cranking.

Related questions

Why does your oil smell like gas you already change the oil?

if the oil smells like gs, this means that your fuel system ,usually the carburettor, is leaking fuel into the block,take it to a mechanic


Why does your oil smell like fuel on a 4 stroke dirt bike?

sounds like a bad head gasket possibly


Why would an Acura RSX compression 11 to 1 67000 miles smell like gasoline in the oil?

gas smell in oil is caused by blow by raw fuel pasing the rings on the piston therefore getting in the oil...........bad rings Now, now... That's not very fair. Just because there's a gasoline smell in the oil doesn't mean you should go tearing your engine apart to get to the rings. Generally this problem is caused by a vehicle running way too rich (is it misfiring?) or is a problem in the fuel pump area. Don't force a rebuild just because you smell gas in the oil. http://www.autozone.com/servlet/UiBroker?UseCase=S001&UserAction=viewSimpleDiagInfo&Parameters=info


What would cause bad sputtering and fuel smell out of a 94 Grand Prix exhaust for 3 to 4 minutes after startup?

Smell the oil, if smells like some gas is in it. then it would be ur fuel pressure regulator.


How can you tell if fuel has 2stroke oil in it?

The gas will be darker and have a different smell


17 hp Briggs engine that just started smoking all of a sudden.But doesn't sound like anything major But is spraying oil near the front of my mower.?

Remove the oil dipstick and smell to see if there is fuel odor. If you smell fuel, then check the spark plug for a good spark, or the carburetor adjustments for correct mixture. Sounds like unburnt fuel is seeping through the cylinder wall into the crankcase, elevating the level of the oil.


Why does your oil smell like gas?

Knowing what year, make and model you have would help but, excess gasoline is getting into the engine oil, could be from a faulty fuel injector, fuel pressure regulator or in the older vehicles, a flooding carburetor or faulty fuel pump.


Does antifreeze have a smell?

Yes anti freeze has a sweet smell, at least in comparison to the normal fuel and oil smells of a car


Why does oil smell like gas but compression is good?

Not knowing what vehicle and engine you have you may have a faulty fuel pump leaking gasoline into the engine crankcase.


How do you tell if it is diesel how does it smell?

Diesel fuel smells the same as home heating oil.


How do you get fuel oil smell out of house?

don't poop so much fanny breath :)


What are aromatics in fuel oil?

Aromatics, or more commonly termed Volatiles, in fuel oil are substances in the oil that will completely evaporate at 270 degrees F (132C). These are what give oil it's characteristic smell (aroma).