Engine revs up on its own then loses power and smoke coming from exhaust

Hi,

The smoke that comes from the exhaust, can you tell me the color? Is it a white heavy smoke that looks like excessive steam?

If that is the case, chances are you have engine coolant entering the combustion chamber and burning with the fuel. This is likely the result of a bad head gasket.

Take a look through this link and let me know if it seems to mirror what you experience. It basically explains what to look for with a bad head gasket. As you page down, you will see where it talks about white smoke.

https://www.2carpros.com/articles/head-gasket-blown-test

Let me know. Also, check to make sure the engine coolant isn't getting low.

Joe