We need to know the year of that truck to answer that question.
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
The fuel pressure for a 1988 Jaguar XJS typically ranges between 36 to 43 psi (pounds per square inch) at idle. It's important to ensure that the fuel system components, such as the fuel pump and pressure regulator, are functioning properly to maintain this pressure. Always refer to the specific service manual for your vehicle for precise specifications and troubleshooting.
The fuel pressure for a 1984 Nissan 300ZX should typically be around 36 to 43 psi (pounds per square inch) when the fuel pump is running and the engine is in a specific operating condition. It's important to check the fuel pressure with a gauge to ensure it is within this range for optimal engine performance. If the pressure is significantly outside this range, it may indicate issues with the fuel pump, pressure regulator, or fuel lines.
The required fuel pressure for a Volvo S70 typically ranges between 36 to 43 psi (pounds per square inch) when the engine is running. This pressure is essential for optimal fuel delivery to the engine for efficient performance. If the fuel pressure falls outside this range, it may indicate issues with the fuel pump, fuel filter, or pressure regulator. Always consult the vehicle's service manual for specific details related to your model year.
The recommended fuel pressure for a 2001 Nissan Xterra with a 3.3 V6 engine is typically between 43 to 50 psi (pounds per square inch) when the fuel pump is operating. It's important to ensure that the fuel pressure regulator and fuel pump are functioning properly to maintain this pressure for optimal engine performance. Always refer to the vehicle's service manual for specific testing procedures and specifications.
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
The fuel pressure for a 1994 Chevrolet Z28 with the LT1 engine typically ranges from 43 to 47 psi (pounds per square inch) when the fuel pump is running and the engine is off. When the engine is running, the pressure should remain within this range. It's essential to check this pressure with a fuel pressure gauge to ensure proper engine performance and fuel delivery.
The fuel pressure for a 1986 Mercedes-Benz 560SL is typically around 36-43 psi (pounds per square inch) for the fuel delivery system. This pressure is essential for proper fuel injection and engine performance. If you're checking the fuel pressure, make sure to use a reliable gauge and follow safety precautions, as working with fuel systems can be hazardous.