I want to remove the injection pump on this engine:



as I want to clean the pump and I might end up repainting the block. Any ideas if I can remove the injection pump and reinstall it without screwing up the timing? I'd rather not have to re-time the engine plus it was running excellent before. Any advice is appreciated, though I may end up leaving the pump in place if it is too difficult of a task. I know in theory this is possible but it seems quite tricky. And by the way, this is a European engine so it has the M style injection pump. Thank you