JunpoweR

iTrader: (1)

BLue Smoke

people think blue smoke is oil
but i think its white
i know if its a little smoke it looks blue cause its not thick
cause oil burns white on all the blown rx7's i seen with bad oil comsumption.. do you agree??
i just think the myth of blue smoke is cause its looks light it always becomes white smoke when i seen rx7s eat oil like crazy
and i feel it could be blown o rings
tell me what you think of blue and white smoke

JunpoweR

iTrader: (1)

also people mistake coolant for white smoke
i dont think coolant\water gets into the combustion chambers while its running because combustion causes pressure into the water system because it creates more pressure then the stock cooling system (11 psi)
also known as volcano radiator to me and others..
but when stopped\not running it could seep into the combustion chambers..
everyone tell me your opinions thx =)

Project84

Coolant can get into the rotor if the metal that forms the channel for the water seal is broken and creates a big enough gap. Usually though, the coolant gets in while the engine is off, then when you go to start it the engine burns off the coolant.

Oil burns blue, at least on piston engines. Sometimes it does burn white with a faint tint of blue. But the difference in the whitish blue oil and the white from coolant burning is that coolant smoke is so thick you can't see. Ever see a car on the side of the road that overheated or had a busted radiator or radiator hose? The smoke from the exhaust is usually really thick like that.

I pretty much agree with you though. Some people do get them confused.

JGard18

what's the discussion? It's a fact, anti-freeze will burn with white smoke, and oil will burn with blue smoke.

there's no real debate here.

Mephis

agreed

dr0x

I think some types of oil will burn more of a white color than others, but it still looks blue.

What about that pink antifreeze ****? I know the green stuff burns white.

Black13B

iTrader: (1)

Thicker oil seems to be more of a light blue, doesn't it?

boosted1205

iTrader: (9)

Just stand behind the tailpipes and smell the exhaust.
Simple.

sectachrome

if coolant is getting into your combustion chamber, is that bad?

ilike2eatricers

Yes that means your coolant seals are gone and its time for a rebuild shortly.

sectachrome

........****.

Black13B

iTrader: (1)

Anything unmetered into the combustion chamber is bad.

boosted1205

iTrader: (9)

I guess that means you smell coolant in your exhaust?
It will eventually get worse but it takes quite awhile.
Now is a good time to save and search. You're lucky you live in the continental US and not in the middle of the ocean. You can at least drive and pick up the motor and not have it flown.

sectachrome

occasionaly i get a little bit of white smoke from the exhaust when i start my car. it runs perfect though.

Black13B

iTrader: (1)

I have read somewhere that a bit on startup is sometimes normal.. Anyone back this up?

sectachrome

*crosses fingers*

sectachrome

double post...*still crossing fingers*

Wankels-Revenge

I agree with boosted1205...when in doubt take a whiff.

Black13B

iTrader: (1)

Yep. Coolant has a very dense sweet smell when it's being burnt.

dr0x

Sometimes you get moisture collecting in the exhaust/combustion chamber which can cause a bit of smoke at start up..

But coolant getting into the combustion chamber is really bad. If you leave the car sit like that the internals of the motor will actually rust.

Black13B

iTrader: (1)

Ahh yes that is what I was thinking of.

boosted1205

iTrader: (9)

All rotaries smoke a bit on start up but clears after a few seconds .

sectachrome

i hope your right!

Black13B

iTrader: (1)

Mine doesn't..

Maybe if you stuff your face against the exhaust tip, then you can see a tiny bit, but that's how all engines are..

boosted1205

iTrader: (9)

I said a bit Not a smoke screen. LOL

But even more so because of the oil injection and even more if you have the oil pellet mod.

Sectachrome:
If you have doubts, take off the radiator cap and crank the engine. A sure way to tell if the seal is going is when the coolant shoots out or the overflow tank fills instead of sucking into the radiator.
Don't be too alarmed at some smoke. It could be anything. Like I said, rotaries inject oil into the combustion so when you shut it down, there is still oil on the housings. Many many moons ago, a brand new engine was installed by the dealer and it always gave off a *little* smoke and burned clean after a few seconds when everything started to heat up.
A bad turbo oil seal, if you live in cold area or the morning was unusually cold, etc. will let off smoke or condensation.
It doesn't ALWAYS point to a bad oil seal or coolant seal.