I removed the ESP of my 230er Ducato and brought it to the Bosch service to repair. The background was that the pump was leaking strongly on the gas lever, Diesel was already running out. New seals, sockets and a new lifting disc were installed, as it probably already had inlet tracks. So the pump was installed again and nothing happens! The thing doesn’t make a mux at all. Lines have been vented to x-ten times and almost 2 batteries are unarranged. But diesel arrives at the injection nozzles. Where can the error now lie? Can it be that the pump wheel is twisted by 1 revolution? Or is the pump back in output position after 1 complete revolution and it doesn’t matter how often you turn it as long as the locking of the thorn fits? Can it be that the lifting disc has been twisted by 180 degrees? Would the Bosch service have had to notice this on the test bench?