My eberspacher turns on but will not keep running after the 2nd try to run. I’ve replaced the in line filter and the pump is definitely working and is spitting out diesel on inspection. I’ve yet to check by the igniter and the filter by it. What do you think is the problem please?

Hi, thank you for your question. If you have the Eberspacher Espar Airtronic D2 and a digital controller, you should be able to retrieve specific fault codes that could highlight your exact issue. Typically 'no start' faults like this are caused by either, fuel supply (check fuel is reaching the heater unit), voltage (check power at the heater unit is sufficient, if possible monitor under load), air (check combustion air intake and exhaust pipe are not blocked or restricted). If you can please confirm the heater version and controller we will be able to offer more detailed troubleshooting advice. If you have an Easy Start Select, see the document for entering the workshop menu and retrieving fault codes - https://www.butlertechnik.com/downloads/cms/7724/eberspacher-espar-easy-start-select-workshop-menu-manual.pdf For a full list of Eberspacher D2 Airtronic fault codes please see link - https://www.butlertechnik.com/downloads/cms/eberspacher-espar-airtronic-d2-fault-codes-troubleshooting-manual.pdf I hope this helps.