Strange Noise

[bo8109b]

Trying to chase down an under hood slapping metal sound while driving my '40. Months ago started with a ticking sound. Now it's loud slapping metal when accelerating up a grade. Tempo slows near the top in tune with slowing engine rpm's. Is this something I could expect from a leaking exhaust manifold or something else? Carl

 

[ford38v8]

Check the condition of your motor mounts. Your fan blade may kiss the radiator on acceleration with sloppy motor mounts.

 

[bo8109b]

All 4 motor mounts are new plus tight steady rods. Carl

 

[petehoovie]

Check for loose or worn fan belt....

 

[Zeke3]

Check the fan blade for cracks.

 

[JayChicago]

when accelerating up a grade.

He said noise occurs under load