Hi, I have a '89 560sl that's been sitting for about 6 months. It ran fine before but now it won't start. I have spark and compression. (runs for a few seconds on starter fluid) I hear the pump running but when i loosen the fuel lines going to the injectors, nothing is coming out when cranking the engine. I'm guessing it's the fuel distributer that's clogged. Is there a way to clean it? Is there a way to have the fuel pump circulate fuel system cleaner through it continuously? Or do I need to pull it out and pour some cleaner into it?

Update: Replaced both fuel pumps and fuel filter. Car starts now but dies 15min later. Pumps become very loud then car quits.