Fuel pump failing
Posted: 16 Mar 2009 18:53
Hello to everybody.
Last two weeks the fuel pump (holley red tab 97gph at 7psi) is failing.
I'm listening different noise few weeks ago, until the pump noise drops and I check the pressure gauge and the pressure is dropping from 7psi to 5 or 4 and when the car stops, ilding or driving slow I check the air/fuel ratio gauge working leaner, also sometimes at the highway.
We disassembled the pump, all is clean. We strength the spring inside the pump and the pressure raised to 9psi. We adjusted the pressure regulator to 7 psi but still works bad.
What do you think about it? Is normal this type of pump failing? What do you recommend to me?
Thanks.
Last two weeks the fuel pump (holley red tab 97gph at 7psi) is failing.
I'm listening different noise few weeks ago, until the pump noise drops and I check the pressure gauge and the pressure is dropping from 7psi to 5 or 4 and when the car stops, ilding or driving slow I check the air/fuel ratio gauge working leaner, also sometimes at the highway.
We disassembled the pump, all is clean. We strength the spring inside the pump and the pressure raised to 9psi. We adjusted the pressure regulator to 7 psi but still works bad.
What do you think about it? Is normal this type of pump failing? What do you recommend to me?
Thanks.