low fuel pressure

duane.mosleyduane.mosley Member Posts: 317 ✭✭✭
i have an 06' 5.7 volvo with MPI only showing 20psi. before i go replacing the outrageously priced fuel pump, is there anything that would cause low pressure other than the pump? the shut off valve is clearly open, no kinks in the line, no leaks, new fuel filter(even put the old one back on to make sure it wasn't a faulty filter). none of the fuel lines have ever been removed. bought the boat last year and other than a hard start issue when it was hot, it ran great!!  i pulled the pressure regulator and it had a little bit of debris but it was very tiny. seems as if i am getting a lot of air. when i started the boat today to go on our unsuccessful boat ride, there was a whining noise coming from the front of the engine. it sounded like an alternator bearing but i am thinking now that it was the fuel pump. any thoughts are greatly appreciated.


thanks

duane

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