I’m afraid my AGR valve is broken. Had had an oil stain under the car every day a little bit a year ago, but there was no oil loss. The whole engine was oiled. My alternator killed the oil. After the TÜV had warned about oil loss and I had an engine wash done, there was no oil for a long time. Now there are small oil splashes over the alternator. Fits to the AGR valve. I’ve been rummaging here for a long time and seen a photo of the AGR. There’s a hose on it, I don’t, the nipple also looks as if a hose has to be on it. In the meantime, I’ve read: The AGR is controlled by mechanical pressure box, the exhaust return should only be active at partial load. Therefore, a pressure line to the pressure box, which informs the AGR of the current load situation. My question now: Where does the pressure signal for the AGR come from? Maybe the hose still hangs around and has to be secured. Otherwise, I have to replace it, even if the AGR valve is replaced by the AGR without an order signal.