Want this question answered?
On the fuel rail
The 2004 Kia Optima runs on regular unleaded.
To check the fuel pressure on a 2001 Kia Optima, you should get a fuel pressure test port. You can purchase one at the local auto parts store in most cases.
There would be weak fuel flow to the engine resulting in sputtering upon acceleration or no fuel flow at all resulting in a car that will not start.
The fuel pressure for a 2004 A Dodge Ram truck with a 1500 5.7 liter engine should run around 47 psi( pounds per square inch). If the fuel pressure is low you might hear grinding or noisy engine.
There is none
wasdriving a 2004 kia optima just shut off changed fuel pump and found out no spark so no spark no fuel any suggestions
The regulator is part of the pump module in the fuel tank.
The fuel pressure regulator maintains a constant predetermined fuel pressure regardless of engine RPMs.
My Kia Optima 2004 has the filter inside the gas tank. Behind the rear seats, when you fold them forward, you will see an opening to the fuel pump.
Key on engine off is 48 to 54 psi.
It controls the fuel pressure supplied to the engine.