Go ahead with the filter change. The pressure on your vehicle is only supposed to be 9 -13 psi. So I would check fuel pressure.
If pressure is to high or to low it is possible that the Fuel Pressure Regulator is Bad.
You will also need to check the injectors to make sure they have power and are working correctly.
To test injector you will need a Digital Volt Ohm Meter.
Disconnect Injector Harness, check resistance across injector terminals. Resistance should be 1.3
Tuesday, January 20th, 2009 AT 1:14 PM