when starting my 07 f150 i hear a little rattle niose up front when i slightly touch gas pedal then when i give it gas dont hear it my thought was water pump or ?
That noise is from the phasers, typical on 4.6 and 5.4, 3 valve head engines. Check oil pressure with a gauge when cold and let it go up to normal operating temperature, if ur pressure remains above 50psi u need new phasers or solenoids if the pressure drops below 30psi ur engine has internal wear
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