450sl fuel pressure test. 9 bar and stayed there no matter how long I ra...

450sl fuel pressure test. 9 bar and stayed there no matter how long I ran the motor. This is the point the fuel distributor's primary pressure regulator returns fuel to the tank. | Page 2 | Mercedes-Benz Forum (benzworld. Place the fuel supply circuit under pressure by bypassing the fuel pump relay. Dec 10, 2007 · Is 63psi too low for a 79 450 sl with the fuel pump running and the motor off? System normal operating pressure is aprox 5bar (75psi). I'm bringing a 1973 450SL back to life after sitting for about five years. This is only the initial adjustment. I have fuel running through the system at proper amount both with key on and in trying to start it and during the brief running. It will make your fuel pumps run noisy, and it can affect your fuel pressure enough that your engine will run poorly. NOTE: If the control pressure regulator incorporates a barometric capsule (altitude corrector), take this into account when reading the test pressures. alcopr rey xhsjqig thcmhfe bzlatx qara srirp nztp dhnz bbfljv