Try a new Fuel filter, or a new fuel pressure regulator.
Also check if the fuel pump is working, it could be electrical.
Usually you can hear the pump buzzing if you're close to it.
Are you getting power to the system?
Injectors are clogged
You may have a bad fuel pump relay or a blown fuel pump fuse.
For a very limited time, until you injectors clog and your fuel pump needs to be replaced. Diesel motors - turbocharged or otherwise - require extensive modification to be optimised for biodiesel. This includes replacing the fuel lines, fuel injectors, and fuel pump.
If the starter is turning over on the 1989 Honda Civic but the engine is not getting gas, the problem is more likely the fuel pump than the injectors. Clogged injectors might cause difficult starts but a damaged fuel pump will cause the vehicle to receive no fuel at all.
Maybe fuel pump or dirty injectors
Faulty fuel pump. Faulty fuel pump relay. Faulty fuel pressure regulator. Clogged fuel filter, pickup, or line. No fuel in the fuel tank.
A clogged fuel filter, bad fuel pump or the fuel line is blocked/damaged. What about a fuel relay fuse?
Bad fuel pump, clogged or broken fuel lines, or if it is fuel injected it could be bad fuel injectors.
you might have to change the fuel filter as well that might be your problem or you have clogged injectors
yes But hopefully you have an inline fuel filter that will protect the injectors from debris from a failing fuel pump.
Fuel pressure may be lower than required amount.