Heater produces oil/gas smell
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Joined: Jul 2007
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Heater produces oil/gas smell
Howdy everyone - when I turn on the heater in my 2002 C230 Sportcoupe, sometimes I smell oil or gas - not all the time, but maybe every other time. Any idea what might be causing this?
MBWorld Fanatic!
Joined: Jan 2005
Posts: 2,848
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From: Orange County
2005 C Wagon (No snickering please!)
Any time you smell fuel, it is time to stop and have a complete look at the fuel system.
It can be vey dangerous if you have a leak.
It could turn your ride into a carbecue.
It can be vey dangerous if you have a leak.
It could turn your ride into a carbecue.
Super Member
Joined: Jul 2008
Posts: 929
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From: Portland, Oregon
2016 GLE 350
You may also want to check out your valve cover gasket. They can leak and drip a bit of oil on the exhaust manifold where it burns off, and you can get a whiff of burnt oil in the cab via the HVAC system.
Pretty common issue on both the V6 and Inline 4 motors. My right side VC gasket is just starting to leak a bit at 80K miles.
You really need to determine if it is gas or oil smell, because, as Moviela notes, fuel leaks can be dangerous.
Good luck on it !
Pretty common issue on both the V6 and Inline 4 motors. My right side VC gasket is just starting to leak a bit at 80K miles.
You really need to determine if it is gas or oil smell, because, as Moviela notes, fuel leaks can be dangerous.
Good luck on it !
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MBWorld Fanatic!
Joined: Jun 2002
Posts: 7,276
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From: So. Oregon Coast
C230 Sport Coup + 2006 W164 ML350 + 99 Ford Escort RIP
In other words, when you turn on the heater, you're pumping in air that comes in directly under the hood.
So, whatever is stinking under the hood, is going to stink up your car.
So, that includes any oil that's burning or exhaust leak.
For me, I had to replace the manifold gasket a couple times due to exhaust leaks.
Sitting at lights I'd choke. Moving, there was enough air circulation, you wouldn't notice it.
Be sure to use the mercedes one, not one from the local auto parts store.
I have a couple of extra ones, I could sell you one very inexpensively if that's the issue.
But before you replace anything just look for leaks, and whats smelling and from where..
Tighten any loose nuts and bolts and see if that fixes it.
So, whatever is stinking under the hood, is going to stink up your car.
So, that includes any oil that's burning or exhaust leak.
For me, I had to replace the manifold gasket a couple times due to exhaust leaks.
Sitting at lights I'd choke. Moving, there was enough air circulation, you wouldn't notice it.
Be sure to use the mercedes one, not one from the local auto parts store.
I have a couple of extra ones, I could sell you one very inexpensively if that's the issue.
But before you replace anything just look for leaks, and whats smelling and from where..
Tighten any loose nuts and bolts and see if that fixes it.
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