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Rattle in engine

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Old Nov 1, 2008 | 09:10 PM
  #1  
racedazed's Avatar
racedazed
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Cruising
 
Joined: Nov 2008
Posts: 12
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From: Bridgewater NJ
Default Rattle in engine

Need some guidance. I've got a 78. Starts fine. Idles fine. I notice when I shift it into gear, the rpms drop and I hear a raddle. Goes away when I shift it back into P and let the rpms come up. My first thought was a broken valve spring or rod bearing but it should raddle at idle also. It's an automatic transmission. Any suggestions on what to check first?
Thanks,
Todd
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Old Nov 1, 2008 | 09:18 PM
  #2  
Skip Burney's Avatar
Skip Burney
Burning Brakes
 
Joined: Jul 2008
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From: Brooklet Ga.
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Have you checked for a cracked flex plate I had the same thing in a pickup truck of mine and it caused the exact same rattle
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