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Old Jun 9, 2002 | 09:37 PM
  #1  
Cowboy68's Avatar
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Clanking Noise

Hey everyone, I am hearing a fairly loud clanking noise comeing from under the hood as I am driving...it does not clank while idel. It feels like it has something to do with the accelerator pedel, dones anyone have any idea what this might be? Thanks

- - Cowboy
 
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Old Jun 9, 2002 | 09:45 PM
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Jimbare's Avatar
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Clanking Noise

does it increas with r p m ? or does it increase with speed? why do you say it has something to do with the accellerator?
 
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Old Jun 9, 2002 | 10:14 PM
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Clanking Noise

it increases with rpm....I thought that it had something to do with the accelerator because it seemes to get worse the harder I press on it
 
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Old Jun 9, 2002 | 10:19 PM
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Clanking Noise

uh oh, how loud is it? is it a deep knock or is it tinny.
 
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Old Jun 9, 2002 | 10:22 PM
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Clanking Noise

does it do it when you let off the gas going down the road? is it louder at accelleration or at a steady speed? i know this is hard but it is kinda hard to diagnose one that you cant hear.
 
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Old Jun 9, 2002 | 10:26 PM
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Clanking Noise


Piston slap
Rod bearings

Can you make a recording of it?


[font color=red]Dennis

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Old Jun 9, 2002 | 10:44 PM
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Jimbare
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Clanking Noise

right on million! afraid that is what he has. i gat a 79 351 that has been knocking for 4 years that i know of, still runs like a champ just a little noisy.
 
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Old Jun 10, 2002 | 11:42 PM
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Clanking Noise

Yes it does continue if I let off of the gas while driving....and it almose sounds like the clanking noise that my lawn mower maked when it gets clogged
 
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Old Jun 11, 2002 | 01:46 PM
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Clanking Noise

Before writing it off the engine I would check all the accesories, Alternator, water pump, power steering. You can loosen the belts and turn pulleys by hand to look for a problem.

Bear
 
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Old Jun 11, 2002 | 07:07 PM
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Clanking Noise

 
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Old Jun 11, 2002 | 07:19 PM
  #11  
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Jimbare
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From: oklahoma
Clanking Noise

take the belts off and start your truck. dont run it more than a couple of minutes. see if it still makes the noise. if it doesnt, start checking accessories. if it does make it, check and make sure the starter is tight to the bellhousing. get a light, with the truck dead, and look up into the bellhousing and make sure the bendix is retracting all the way. use a screwdriver to push it back toward the starter. if it is touching the flywheel, or you can push it back more than a sixteenth of an inch or so, check the return spring in the starter. how is your oil pressure? does it get louder when you are accelerating, or coasting? let us know what you find out!
 
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Old Jun 12, 2002 | 06:05 AM
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Clanking Noise

Don't forget to check the motor mounts.
 
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