Vibrating at idle speed
i have an 147 and i got a problem a few months ago
i went to the service to change the flywheel (there was a noise that the mechanics though the flywheel was the culprit). they put in the new flywheel, reassembled the gearbox, and when i tried to start the engine... nothing. after some investigating, they discovered that the new flywheel was a bit thicker than the old one, so it was blocked by the gearbox wall. anyways, they put in the old one, and since then i have this vibration of the car at idle rpms (until 1200 rpm). otherwise the engine runs smooth, no power loss, nothing. so i went back, they disassembled the gearbox to verfy if anything is wrong, nothing. i changed all the engine rubber supports (all4 of them). still the same problem. they have no ideea what could be wrong, and neither do i. the only thing that i can think of is that something is not balanced anymore, because when they screwed in the gearbox with the thicker flyweel mounted, it touched the wall and was probably pushed int with some force?
does anyone have any ideea?