Question about 2003 BMW 325

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I have a burnt oil smell in the cabin on occaision...cannot find a leak anywhere

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  • Anonymous Apr 01, 2014

    there is a smell of burnt wire in the car after it warms up

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The oil is most likely leaking from the valve cover on the side the exhaust manifold is on. The oil leaks out periodically and burns off or vaporizes immediately that's why there is no trace of a leak because the oil never has a chance to accumulate it vaporized tooo quickly.

Posted on Nov 17, 2009

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Very common for the valve cover gasket to go bad on these cars, which would cause this smell. also if it's an XI check the front axle boots for leaks and check your power steering cooler lines.

Posted on Nov 17, 2009

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3 Answers

I cranked my car up this morning and for the last few morning when i warm it up it gives a burning smell. I dont see any leaks. What could the problem be?


check for oil leaks around the engine manifold check rocker cover for leaks if its a diesel check the turbo charger for leaks check wiring around exhaust manifold

Nov 07, 2014 | 2008 Mercedes-Benz Mercedes Benz C Class

1 Answer

Smell cabin


A modern, well maintained vehicle's exhaust is virtually orderless once the catalytic converter has fired up. What you could smelling is oil leaking from the engine, for instance, from the valve cover that then drips down onto the hot exhaust where it vaporizes. That oil vapor is then ingesting into the passenger compartment through the fresh air intakes. Try airing out the cabin and then set the ventilation controls to recirculation mode to see if the problem persists. Also, the oil vapor will only happen when the exhaust is hot. So if you don't smell it when you first start the engine, that could be confirming this cause. Look at your engine and see if you see oil and dirt oozing from the valve cover gasket. You can try to tighten the oil cover fasterners to see if it stops the leak, but the best approach would be to replace the valve cover gasket.

Oct 02, 2013 | 1994 Honda Accord

1 Answer

Bad water leak probably heater coil


Sometimes, not the heater coil...this leak usually smells inside the cabin...can you see anti-freeze build up anywhere? These motors are more prone to a water pump leak (needs replaced, inexpensive and not to difficult) or the intake manifold gasket...more costly about $400. for a mechanic to do...you should see some anti-freeze build up around the intake bolts...this assumes that there is no water in your oil...which is far more costly as this indicates an internal cylinder head leak...Could be just a hose leak...a bad radiator cap...or thermostat housing leak, (maybe a cracked housing? Help me help you...do you see any anti-freeze build up anywhere? Hope this helps.

Jun 25, 2012 | 2000 Chevrolet Malibu

1 Answer

Im getting a burning smell coming into the car thru the vents usually if you turn the car on and let it sit for a while. I think i have located the problem..The hoses that kinda come up near the...


The best parts diagrams are found at RealOEM.com
Burning smell in the cabin is usually caused by a leaking valve cover gasket. Oil seeps down from the valve cover onto the exhaust manifold where it burns. Smoke gets drawn into the cabin air intake due to the shape of the car and the air pressure differential between the engine compartment and the heater air plenum.
This will slowly get worse, and breathing that synthetic oil smoke, even at a few parts per million concentration, is probably not good for your kids (if any), so you should get this taken care of.

Jun 21, 2011 | BMW 325 Cars & Trucks

1 Answer

I am smelling a burnt oil smell through the vents


change cabin filter located behind glove box.

Feb 28, 2010 | 1996 Lexus ES 300

1 Answer

2001 jeep smells like burnt wire in the cabin


That smell may be related to an oil leak burning off on an exhaust manifold or pipe. Since you did not report any electrical malfunctions, I'd check that first. When working the engine harder it gets hotter and you will therefore smell the burning more than when just normally driving. I can't see your vehicle so don't give me a bad rating if I'm wrong, but I'd look there first!

Jan 31, 2010 | Jeep Grand Cherokee Cars & Trucks

1 Answer

I smell burnt oil after driving long distances, more or less 30 mintues of constant driving


Check the engine for oil leaks. More than likely oil is dripping on the hot exhaust pipe which causes the oil burnt smell.

Nov 23, 2009 | 2001 Mazda MPV

1 Answer

Smell like burnt rubber in engine compartment on passengers side. 05 plate 2 litre Focus Diesel. Engine runs seemingly happily, no odd noises, no visible warning lights or messages.


I expect that you have an oil leak that is dripping/running on to the exhaust. The burnt oil will smells a bit like rubber. Check for oil leaks that are higher up on the engine. (Valve Cover gasket for example).

Jul 21, 2009 | 2005 Ford Focus

3 Answers

Burnt Oil Smell


Check carefully around the valve covers, this is the area that leaks most frequently occur, and being located next to the exhaust manifold can easily cause the burning smell. There is a very easy to replace gasket under the cover. Other possibilities, shop or you when changed or added oil spilled a bit and that has worked down to the exhaust manifold and is causing the burnt oil smell. Last possibility is that you do have a slow leak on the underside of the engine that is blowing back onto the exhaust system causing the smell.

May 22, 2009 | 1998 Oldsmobile Intrigue

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