oblivionis

iTrader: (2)

Well I just test drove an IS350 today with 15K miles on it. At one point when I pushed it a little (close to redline) I saw dark exhaust behind me. There wasn't too much of it but just enough for me to notice. The engine wasn't cold either, I drove it for a while before I really tested it. Is it normal for a car to do this or is there something wrong with this particular IS? When you guys rev the engine do you see dark exhaust behind you?

Ramon

I've never noticed it myself.

knihc2008

iTrader: (1)

Not me. I've pushed my IS a fair share of times with no smoke; have also followed IS on plenty of "spirited runs" and nothing but maybe white smoke on cold mornings. Either that car has something seriously wrong with it or it must be the smoke monster.

kschawaii

smoke monster??? hahahahahhaahahha

im loving that pic....

oblivionis

iTrader: (2)

Well it wasn't as dark as the smoke monster but it definitively wasn't the white smoke you see on cold days.

IS_Mine

I have to ask.. I've seen black smoke come out of cars that have sat for awhile and then are driven.

When you saw the smoke did you "get on" on the car? Usually with cars that have sat for awhile, maybe two weeks without cranking they spit out that smoke.. I have a hard time beliving a new IS with less that 20k miles is burning oil.

l1tech

This is not really uncommon on cars that have never been pushed in their lifetime. Most likely it is just a little carbon buildup.

BlitzIS350

ive actually seen this happen to the new GS before. i was following this guy who was driving spiritly on the hwy and almost everytime he punched it, a puff of black smoke came out.

ldc

I aint trippin this black smoke if it's not your fault but the car's.

Don't forget Lexus/Toyota like most Japanese cars not to forget Hondas are extremely strick on emmissions and this is a relatively new car mang....something is missing or needs topping up i'd say.

mkorsu

Carbon build up. Every single car with a combustion engine does it.

umpalumpa

I was just thinking about the time i saw someone put gas in their diesel engine or vice versa - it was like 15years ago. THAT was a smokey experience!

Could this be a dirty fuel filter problem?

PhilipMSPT

iTrader: (5)

Do you use regular or premium gasoline?

Was the oil changed recently? Was it the correct viscosity?

I haven't seen it on mine, nor anyone else's on the road...

gsrthomas

iTrader: (1)

This is just speculation, but might make sense.

Say you NEVER really floored or pushed your car for X amount of miles. Then 10k miles later you decided to floor it. I think then you will see some sort of smoke on all cars if it wasnt pushed previously.

Carbon builds up on top of valves, and I'm sort there is some sort of bulid up in the exhaust system.

So pushing your car once a while is actually healthy for your car.

Dj_AmtraX

iTrader: (2)

it is normal.

joonsta

Take a look at this video of an IS 350 being revved.

http://youtube.com/watch?v=vOjMGvSL_Pg

You can notice the smoke coming out, so it's not just your car.