There is a vacuum controlled pressure regulator on the fuel rail. Check for vacuum leaks. If the unit is faulty, it will often leak fuel into the vacuum line.
check the fuses and change the fuel pump relay first in the fuse box behind the front ash tray goggle Volvo relays to see it. and fuel cleaner in the fuel tank.
clogged fuel filter causing back pressure on the pump making it draw too much amperage.
The distributer is a purely electrical device, it distributes the spark to the proper cylinder. If there's no fuel, check out the fuel pump.
fuel pressure on non-turbo 64-85psi .65 ltr of fuel in 30 seconds turbo 71-92psi 1.10 ltr of fuel in 30seconds
n.a. fuse relay only.
Replace the fuel pump in /on the gas tank ≈ $150
The issue may be due to a fuel or ignition problem, such as a clogged fuel filter, faulty spark plugs, or a malfunctioning fuel injector. It's recommended to have the vehicle inspected by a mechanic to diagnose and repair the issue properly.
The fuel pressure for a 1994 Volvo 940 typically ranges from 36 to 42 psi (pounds per square inch) at the fuel rail. This pressure is essential for proper fuel delivery to the engine. If you're troubleshooting fuel issues, it's important to check the pressure with a reliable gauge to ensure it falls within this range.
the fuel pressure regulator conntrols fuel pressure and that's all
On a 2000 Passat 1.8L turbo, the fuel pressure should be around 50 psi at idle with the manifold vacuum connected to FPR. When disconnected, the psi should be 58.
3.2 bar or about 39 PSI
you should have 2pumps, a low pressure in the tnk and a high pressure in the line.