Makes & Models   Car Specs   Car Pictures   Car Dealers   Classifieds   Forums     My CF
car forums

Smelly Steamy Turbo

Important: The following is a text only archive!
For full features; Go to Smelly Steamy Turbo

OK so let me recap the past 2 days.

Last night I am driving around, kicking the car around a bit, and i start to notice that at every light when i stop i can smell something coming from under the hood..smelled like burning oil at first. Anyway, I drive home (same spirited fashion) park the car shut it off and pop the hood. I get greeted by what seemed like a cloud of steam coming from the area of the turbo, and a really unpleasant smell, kinda like when you run a hairdryer for too long. I shut the hood, go inside and begin my worrying.

Tonight, I am driving around, kicking the car around a bit, and I start to notice that at every light when I stop I can smell the same odor coming from under the hood, again, I cant tell if its burning oil or more of a hairdryer smell. I drive home (same spirited fashion), park the car, and leave it to idle. I pop the hood and surprisingly dont get smacked in the face by a cloud. I start smelling around as the car is still running. I finally settle on the area of the turbo, where there was a lot more heat than other parts of the engine bay, and where the smell is coming from. I shut the car off, go inside and here I am.

Some info on the car.

2004 Mazda MX-5 Mazdaspeed
Stock engine aside from a Forge VTA BOV
35k miles

Did an oil change today, and poured synthetic in. The filter I pulled out said firestone so I guess the previous owner had it done there, and I can only assume they used regular oil. Oil that came out was clean and not milky. No smoke from the exhaust. Car drives the same as before.

Around the engine bay: no leaks, no drips, no spots of oil or any other fluids of any kind. All fluid levels normal.

Under the car: no leaks, no drips, no spots of oil or any other fluids of any kind.

Now I cant tell if the smell is just heat, or oil, or coolant. I do know turbos get very hot during operation, so that explains the heat. I dont know why I got smacked with steam, or if the smell is normal, so I am here to find out. Ive gotten several responses already such as "bad coolant line", "its normal", "turbo is oil and water cooled so its the smell of the fluids burning inside of the turbo", but no real certain answers because everyone I talked to had something different to say.

Anyone have feedback on this? It might just be something that I only noticed now that has been happening the entire time, or maybe the cooler temps at night (dont smell this during the day).

Thank you! posted by  newyorker

Do you allow the turbo to cool down (leaving the car idle for 30-60sec. before shutting the car off.) when you do some heavy loading of the engine? sounds like, to my opinion, you are cooking the turbo, buddy. things are different when you are boosted posted by  DARKtEAGLE

right but the fact that it does it every time i come to a light isnt normal either. im taking it tomorrow to mazda again im fed up. i wont leave their lot until they diagnose the problem and give me a solution.

the smell of burning oil is coming from the rear of the engine, could be a leaking VC or HG or something but they can decide that on their own. posted by  newyorker

Are you sure its not an exhaust leak? Its definitely not exhaust? posted by  Mathew

Does an exhust leak smell like burning oil? does an exhaust leak shoot steam into your face? Frankly at this point i dont give 2 shits what it is, its mazdas problem now posted by  newyorker

why post it here then? :screwy: posted by  windsonian

When I said no smoke I meant no white smoke or blue smoke to signal a problem inside of the engine itself.

Dealer replaced the seal between the trans and driveshaft today because there was a leak there. There is also a possibility that since the shifter bushing ripped, fluid was coming through the shift turret and dripping down the trans and into the cat (there was a sign of burned fluid on it). They fixed the shifter and the seal but I am on record with them that i said there is a burning smell coming from somewhere under the hood near the back of the engine so if the smell doesnt go away in a few days, back to Mazda it goes.

One of the guys at the service desk tried to play stupid with me. After they fixed the shifter for the first time, it was still sticking (if you moved it left to engage gears 1 or 2 and just let go it would stick there. He asked me "well why would you leave it there", my response was "show me any other car on the lot where it sticks like that, it shouldnt stay there no matter why i do it"

****s posted by  newyorker

How would fluid get into the cat? posted by  Mathew

shit, i meant onto posted by  newyorker