V6 engine quake - idea?

[arnoldf]

Hi All!

My 3.0V6 engine doing small quake at around idle speed. (Idle speed is looks like stable...)
Sparks replaced, no error readed via OBD.

Around camshaft belt every parts replaced, and checked.

Anybody has idea? Or anybody knows a typical problem which cause quake?

My last idea only the ingnition coils. But hard to check which one is defected.

Thanks in advance

[vlad47]

I really cant say what it is as I dont know the kind of sound, but if its like a timing bell but they all are changed as you have mentioned, please check the steering oil. Its in front of the front window, passenger side. This sound is usually caused by variosteer with low oil level. Please let me know if it was this.

[arnoldf]

The timing belt position was incorrect! Now, it's ok.
It's strange, because nobody adjusted in the past year.

Few month ago just started to quake. (I'm sure - Thesis is women

Maybe it's became longer