Ok so here's my first post on a problem I am experiencing on my D after trying to start it after 4 years. I should start off with the following: I replaced the Fuel pump, accumulator and Fuel filter. I emptied out the tank and cleaned it out (although it was pretty clean to begin with). I had had the frame off the car and taken all of the fuel lines off and blew them out with shop air. I took the fuel distributor off the car and gently/carefully removed the center metering pin and cleaned out the fuel distributor. I had also rebuilt the entire engine myself and set all the timing and such to spec. I installed everything, put about 5 gallons of gas into my tank along with Stabil gas stabilizer. I have all 3 new fuel hoses and they are connected correctly and routed properly. The new fuel filter is not threaded onto the 90 degree elbow to tight to cut off fuel restriction. Fuel pressure from the hose coming off of the fuel filter to the distributor is running sort of like a garden hose. My cold start valve and frequency valve are working and my warm up regulator is not blocked up. I have had the injectors tested and cleaned by Rob like a year ago and they have been stored safely in a dry location until the other day I put them into the engine. Now here is the problem: I tried to start the engine and it just sputtered and died. After it sputtered and died I tried to start it again but this time it seems that only one cylinder is firing since after every revolution I hear one firing. With the help of Nick Pitello I took out some of the injectors and jump the fuel pump, nothing was spraying out of them. We then began to adjust the CO and still nothing. Nick them tapped the side of the injectors with the plastic side of a screwdriver and it began to spray properly! We then tried it with another injector that wasn't working and it too started to work. We installed the injectors back into the engine (after only doing three of them) and tried to start the car. Well it began to start but very ROUGH and it idled for like 4 secs and then died. After a few seconds we tried to start the car and the problem returned (one cylinder only firing). We took out the same injectors and this time they were intermittently working. Now here is my question: First I should say I do not have a fuel system pressure tester to test the pressure of my system (anyone want to lend me one for a day? :)) Could I have a pressure problem? Like I said before when the system is set up normally and I try to crank it..only one cylinder fires. The sputtering in the beginning is most likely due to the fuel in the intake manifold from the cold start valve. Could it be that my fuel injectors are bad? How could I test them at home to see if they are bad? Is 5 gallons of fuel enough for testing? I didn't want to fill the tank up incase I had to get into the tank again for any reason. I have dealt with loads of electronic injectors (MPI,TBI,etc) but this is my first with the Bosch setup. Any suggestions welcomed and appreciated Thanks, Steve Rubano