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Oil Smells Like Gas!


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Well, just like the title says. I haven't really stuck my nose up to my dipstick before but I did yesterday and I get a pretty good whiff of *what smells like* fuel.  Although I don't fully get why my oil would smell like gas.  My oil level hasn't gone up or down.  My injectors are fairly new (refurb'd) Ford injectors I got off ebay.  Mileage seems normal, oil isn't thinned out.  Just seems to smell like gas.  My tailpipe does NOT smell like gas, I don't have much if any blow-by on my filter or anywhere else. 

 

*Let me qualify my sniffer*.  I quit smoking several years ago and since then my sense of smell is all messed up.  My wife can be burning lavender scented candles...and it will smell like diesel smoke to me.  My dog can be dirty and soaking wet and will smell fine...except to everyone else.  Skunks still smell like skunks though.

 

 

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The vac line with the CCV is not old.  It's been 2-3 yrs. since  I replaced all the emissions/engine/HVAC vac lines.  The line and orifice is clean/clear.   I'll get someone with a good nose and go from there.  I'm going home today to smell all the other cars dipsticks...see what I see (smell). 

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The vac line with the CCV is not old.  It's been 2-3 yrs. since  I replaced all the emissions/engine/HVAC vac lines.  The line and orifice is clean/clear.   I'll get someone with a good nose and go from there.  I'm going home today to smell all the other cars dipsticks...see what I see (smell). 

 

I don't mean any offence but maybe you should wait till dark to do this.....you know.....in case anybody see's  :brows:

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:rotf:  Jim, yxmj

 

It's not something I've experienced personally, but I doubt you have a problem unless you have noticed a change other than smell. I imagine gasoline+oil would look or act out of the ordinary in some way. You said yourself that your sense of smell can be deceiving sometimes, so I would get a second opinion and not worry about it too much.

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Smelling gasoline in oil is pretty standard especially if the engine has not been warmed up and run for a while.  Upon cold start some gas gets past the piston rings and into the oil.  It accumulates a bit then evaporates out once the oil is nice and hot.  If you take a lot of short trips, its entirely possible the gas is just accumulating into the oil.

 

Otherwise, a slight gasoline smell is pretty normal and probably nothing to worry about unless the oil is thin/discolored or otherwise visually wrong.

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Old trick used on big rigs. 

 

 ... If so, oil is fuel fouled. 

 

...good tip...and if the oil is fuel fouled, what's up?  Compression numbers are good at last check at or close to 135 across the board.

 

Fuel is getting by the rings and into the crankcase. Leaky injectors are usually the cause. 

 

Have you done a fuel pressure test? See how long the rail holds pressure after shutting the Jeep off. 

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Smelling gasoline in oil is pretty standard especially if the engine has not been warmed up and run for a while.  Upon cold start some gas gets past the piston rings and into the oil.  It accumulates a bit then evaporates out once the oil is nice and hot.  If you take a lot of short trips, its entirely possible the gas is just accumulating into the oil.

 

Otherwise, a slight gasoline smell is pretty normal and probably nothing to worry about unless the oil is thin/discolored or otherwise visually wrong.

Posts 10 and 11 confirm the presence of gas in the oil. 

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Old trick used on big rigs. 

 

 ... If so, oil is fuel fouled. 

 

...good tip...and if the oil is fuel fouled, what's up?  Compression numbers are good at last check at or close to 135 across the board.

 

Fuel is getting by the rings and into the crankcase. Leaky injectors are usually the cause.

 

Have you done a fuel pressure test? See how long the rail holds pressure after shutting the Jeep off. 

 

 

This was my cause of fuel in the oil. By the time it was ready for an oil change it was so thin it wouldn't hold pressure idling after it warmed up.

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