Z06EATER

my car seems to be smelling kinda like a burny oily smell, after i drive it hard, raced guy today, i was 3 people heavy, he was da only one in the car, kicked his ***, i got up to 110MPH. anyway, i got home and got out the car, it was smelling, only a little from the exhaust and somehow it got into the cabin..so my question is is my car running too rich? my buddy has the same car as me, and regardless how he drives it he get WAY BETTEER MPG THAN ME..and i already changed my fuel filter..after he races in his car, his doesn't smell or nothing..any ideas?

PJmak

I smell that all the time after a race, I took my car to the shop today and they said it was running rich, Idunno what it means but I heard that, I didnt go there for the smell reason tho, my check engine was on

ohlord

you checked for oil pushing out the head gasket or timing cover on the old M104?

clean it and look for leaks.

Z06EATER

i'll be washing my engine on monday, i will take a look for leaks, hmm i don't think it's leaking tho, everyoil change, the amount i put in comes out back, i think my car is runing rich too, i wll take a look, cuz i don't understand how my buddy and me have the same car, bt mine has worse MPG than his..lol

silence

this explains why you got a ride in that other C36 that was "reflashed' or whatever and thought it was legit for a 50 hp gain... lol. I bet you need new o2s?

Z06EATER

really? 02's can cause bad fuel mileage?
lol seriously tho, that car felt realy quick, maybe it was me lol

Untertürkheim

Cars sometimes smell after driving quickly (sometimes known as Autobahn Aroma), but 110 is not that fast...it should not smell. Usually it is more of a tire smell though, unless you were burning off deposits.

Z06EATER

yea maybe, i wanna clean my exhaust more tho....i'm gonna prob run more seafoam through it, shold i pull out the my reso? i have no muffler, only stock cats, i want beter back pressure...

HLG600

Faulty 02 sensors can result in this. I just replaced four of them on the SL.

silence

faulty 02s could lead to you getting horrible gas mileage and power- that's why i said the above

NitrogenBalance

Next time you shut the car off after a good run take the oil fill cap off and see if you can smell the crankcase vapors. They should be distinct. If it smells like what you discribe than ohlord may be right and you have a breach somewhere in the crankcase sealing. Pan, valve covers, PCV hoses, etc..About a year ago I was running an open breather type setup on my crankcase and you could smell it easily after any hard driving or sitting in slow traffic. Common on old muscle cars and such.

It could also be the o2's though. See where the smell is comming from. Tailpipe, motor, etc...

Z06EATER

drove the car hard today, and flipped open the cap, no smell, just smells like oil lol......so i'm guessing my O2's arr going out huh? making the car run too rich?

ohlord

100k interval items.Get it on a real time scanner and find out what values they are showing and if they were that bad you should have a cel.

if you are running that rich a/f your cats may be bad.

silence

there could be many things wrong

we are all just guessing the simple solutions for $#$%s sake- you need to follow ohlords advice.

-drew