Hello all, I bought a used Webasto Thermo Top E and successfully installed it in my diesel vehicle. The heater has about 450h and 1500starts on the clock. The heater ran. However, only when the vehicle was warm after it was moved. Did I start the Sth. in cold condition you had div error in the error memory. Flammwachter 1, no start etc. So well I thought. After 450h it could run out on the burner insert. The old one was leaking somewhere. But now the heater doesn’t start at all. It squirts briefly and then goes out again after about 2 minutes. In the fault memory is just “no start”. This makes you now even if the vehicle has been warmed up before. When I drive the component individually all seem to work. What “wonders” me. The dosing pump clacks extremely loudly in contrast to other pumps I already used. can it have something to do with it? But fuel promotes it. Does anyone have a list of how much ml it needs to promote in a minute? Or does someone have another idea/experience? Thank you very much.