Inside the upper intake manifold, attached to the fuel injection spider.
43 PSI with engine at Idle with Fuel Regulator vacuum line disconnected and plugged.
You probably have a plugged fuel filter. See if you can put a fuel pressure gauge on the fuel supply line at the engine and check your fuel pressure. It could also be a fuel pressure regulator
39-=43
It means to check the fuel system fuel filter fuel pressure O2 sensor(s)
Your fuel pressure drop could be do to a clogged filter, pinched line/hose, or a weak fuel pump. You should have around 35 psi at idle and 43 off idle. I hope this helps answer your question.
Straight out of the FSM :at idlewith vac - 34 psiwithout- 43 psi
41 to 47 psi
running 26-35 off 37-43 and it dont matter if its a dohc or ohv.the pressure is the same.
The stock fuel pressure for a 1997 Mitsubishi GST is 38 psi. Stock injectors are rated at 43 PSI but anything lower should lead to have the fueling system of the car inspected.
NO IT IS NOT, It must have 55 to 62 LBS. NO LOWER ARE HIGHER are it won't run.
Code 43 is a problem in the fuel delivery system.
Depending on the engine and fuel type...Diesel - direct injection fuel pumps generate approx 1600 bar (23 200 psi) for common rail systems, as for the pump-nozzle injector diesel systems (pumpe - duse German translation), the pump can generate over 2000 bar (29 000 psi)Gasoline engines have electric fuel pump located inside a fuel tank, and produces approx 3 bar of pressure (43 psi).