Some person installed 2 bosch pumps on my sl for some reason. strangely enough the car ran fine until it didn't... I basically drove it for less than 3 miles. the fuel tank is clean, injectors work when 12v is applied to them, injector nozzle "hoods" are new, fuel filter too.

I have no pressure gauge yet, I did take one injector out and hooked it up to see if it squirts. It doesn't. There's plenty fuel coming through the rail though.

would this be the pressure regulators? or the pumps not putting out enough?

is there a less costly alternative for the original pump, and what is that other round unit that "normal" 74 sl's have next to/ above the pump? some sort of fuel dampner??

such a overly complicated system, gas motors! unreliable, compared to diesels one might say.