Steamy Exhaust From New Motor

[Theresa Oliver]

we just started up our new engine and noticed a lot of steam from the exhaust, any comments?

 

[stykthyn]

Most likely is oil from the freshly assembled parts. If it was steam you would have a white smoke show and the engine wouldn't hold a good idle.

 

[mikestang63]

define

steam
a lot

was the car sitting for an extended period of time
what temperature is it
is it from one or both tailpipes
does the steam stop after a few seconds
does the steam smell like anitfreeze
what color is it

 

[Gearbanger 101]

There is a difference between steam and a little condensation.

Let it come right up to operating temp and see what it's like.

If it's antifreeze, you should be able to smell it. It's got almost a sweet maple scent.