My 1.8 156 from 2003 has started to shake while it idles when the engine is cold.
When I start up the engine in the morning it adjusts the idle and after app. 20 seconds it runs fine ... after a while the engine starts to shake. When the gas is hit there is no problem, and while driving everything is normal. As soon as i clutch out it starts to shake, and on rare occations the engine cuts off
When the engine is 70 degrees hot or more the problems stop and the idle runs smooth. Until I turn the engine off and it cools down a little, then the Idle shakes the engine again.
As said, when driving there is no problem at all, it picks up the gas and everything seems fine.
I have taken most of the intake apart to control for cracks in the intake pipes. None found and the intake valve seems fine enough, not problems in turning and so forth.
Help me please