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Old 10-10-2020, 05:36 PM   #1
bo8109b
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Default Strange Noise

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
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Old 10-10-2020, 05:42 PM   #2
ford38v8
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Default Re: Strange Noise

Check the condition of your motor mounts. Your fan blade may kiss the radiator on acceleration with sloppy motor mounts.
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Old 10-10-2020, 07:50 PM   #3
bo8109b
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Default Re: Strange Noise

All 4 motor mounts are new plus tight steady rods. Carl
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Old 10-10-2020, 08:01 PM   #4
petehoovie
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Default Re: Strange Noise

Check for loose or worn fan belt....
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Old 10-10-2020, 08:11 PM   #5
Zeke3
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Default Re: Strange Noise

Check the fan blade for cracks.
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Old 10-11-2020, 10:41 AM   #6
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Default Re: Strange Noise

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Quote:
Originally Posted by bo8109b View Post
when accelerating up a grade.
He said noise occurs under load
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