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Name that Sound - engine noise?

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I fired up my 72 Mustang the other day and heard a new sound for the first time. It is sort of like you took a metal nut, put it inside a metal container and shook it a bunch. I think the sound is coming from the front end of the motor, around the distributor/water pump area. It might be coming from the driver side valve cover. I haven't had a chance to use the screwdriver to the ear method but was wondering if anybody out there has heard this sound before or has any idea what it could be.


I have a video clip of the engine idling. I will see if I can figure out how to post it.




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Grab the fan (with the engine off :) ) and see if the water pump shaft moves up and down. Just might not be leaking, but will if so...

Pete - MotoArts Decals and Signs

'71 Sportsroof 351C-4V/4-speed - FINALLY under construction - no, wait, on hold again...

'90 Mustang 7-Up 5.0 ragtop, rolling beater - SOLD

'66 Sunbeam Tiger Mk.IA, survivor

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A collapsed lifter makes a heck of a racket. The long screwdriver to ear really helps isolate that kind of stuff. Good luck


If you don't have time to do it right the first time, you sure as Hell don't have time to do it right the second time.


Dutch uncle

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If it's the water pump you are a lucky dog IMO

73 Grande

351C 2v

Now 4v Carb/Cam/headers/T5


Gasoline is for washing parts.

Alcohol is for drinking.

Nitomethane is for racing!



Work in Progress photos here:

Last Update: 4/23/16

























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Sound seems to be coming from front and center. Also it is not a repetitive sound. Sort of erratic and it does seem to quiet down some as the engine warms up.




Scott, With what sounds like metal floating around, there's a potential for some serious damages by continuing to run it. Hopefully it's just the water pump, keep us posted.



M code 71 Mach 1, 351 4V Cleveland, Ram Air (not factory), C6 Trans, 3.5 rear


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