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2007 5.3 Lifter Noise

14K views 18 replies 7 participants last post by  295/60r20  
unless you take a length of vacuum hose or a mech stethoscope or something (even a screw driver with your ear to the handle)

you're not going to get a very solid diagnosis until you can put a listening device and probe the entire valvetrain, fuel rail, etc. cylinder by cylinder "quadrant by quadrant" to suss out the sound.

I had what i thought was a noisy lifter and it turned out to be a loose #8 spark plug (the one on the passenger side farthest to the back very hard to get to, even harder to get a torque wrench on so i tightened it down and the 'noisy lifter' went away)