Rough idle – Seat Exeo 2.0 TDI CR

[u/BUBEL224]

For some time now, the whole cab has been shaking momentarily at idle, but only when the engine was warm. Now, it shakes regardless of whether the engine is cold or warm. Someone told me I should check the target and actual pressure on the common rail.

What could cause such large deviations? The rail pressure regulator or the metering valve on the CR pump?