280 sl fuel injection

[risktkr]

I just bought a 1969 280sl. The fuel pump was shot, and the tank was full of 4 year old gas. I replaced the pump, fuel filter, and drianed the tank. My problem is fuel gets to the fuel bowl, but not to the engine injectors. The cold start injector gets fuel but does not appear to be squirting any fuel.
The car was sitting for 4 years. Does the mechanical pump need to be bled? is there any where i can look for blockage? I am mechanically inclined, so taking apart the pump is okay with me if it is serviceable.
Thanks for any and all help. Mike