[Espiri1975]

Borismd, I have a 2001 Sequoia with 132K miles, and it started doing it at 120K. My explanation would be exactly the same as yours. You could have not explained it better.

What are the chances of having anything related to a valve?

I am disabled and am not able to get access to or do much to see what is wrong. I have heard that the most probable cause is a cracked exhaust manifold or something related to that part of the exuast.

Any help will be greatly appreciated.

Thanks

Espiri