Engine is smoking for about a minute on a warm startup. Coolant is not dissapearing (dont think it is o-ring as motor is fresh)

what else could it be???

 

Nobody got any ideas?
I looked in the archives but could not find an explanation for this. Please someone this is bugging the hell out of me and is bad for mental health cause it could mean new motor time

 

Fact is its quite common with rotaries. I know some people say it shouldn't happen at all, but it always seems to at least right on start up for all the rx7s I've been around.

 

Could it be a leak in my turbo manifold???

 

What color smoke? If it's black then it's an oil leak somewhere or it's just running rich, white is coolant. When I start my car first thing in the morning it runs so rich you can see little black puffs coming out of the tailpipes.

 

The smoke is white but I am not loosing any coolant. and I have taken off the radiator cap when the car is running and it does not splash out and there are no bubbles in the overflow reservoir.

Could coolant be getting in somewhere else like from the turbo manifold???
Is this possible?

 

Mine does similar things but i think its mostly just steam - when fuel burns in your engine it gets converted to water and CO2 with a bunch of other noxious gases in small quantities.

It may be that some quantity of water ends up pooling in the exhaust or header when the car cools down, and when this is evaporated by the hot exhaust gases on startup, exits the tailpipe as a cloud of steam.

Certainly my 7 spews voluminous clouds of steam out its pipe when I start it up on a cold morning, but so does my neighbour's toyota. This is pretty normal for all cars I think.

It is made worse by the AWS - at 2000RPM idle its dumping a lot of heat and gas out the tailpipe, but when its idling at 750RPM theres nothing really visible coming out of the exhaust.

I think rotors just run hotter than boingers so they tend to produce more steam.

If the smoke is really thick and very snowy white, then you might have a problem, but if its just steam, which goes away once the car has warmed up I think youre just being paranoid