I finally got to measure the fuel pressures. With the valve closed the system pressure is 5.5 bar or 80 psi. The cold control pressure with the valve open is around 4 bar or 56 psi. From my understanding these are too high. I suspect the fuel return line is clogged. I read that the fuel return line is behind the 3rd intake but I am not sure which one. Can someone point me to it.
