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Radiator Knocking Problem

Old Feb 5, 2012 | 11:00 PM
  #16  
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Did the vinegar trick and between it and having new heads placed on, due to a dropped valve seat, it no longer knocks.

The vinegar definitely works though, when I drained it, it looked like I was draining a septic tank.
 
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Old Feb 6, 2012 | 09:56 AM
  #17  
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Glad you found the problem. Vinegar made my $30.00 super cool with a $10.00 pressure test look like a freshly roded radiator. Love the stuff.
 
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Old Mar 21, 2012 | 10:00 AM
  #18  
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Originally Posted by RWENUTS
Put a new rad cap on it. Mine did the same.
I know this is an old thread and the problem as been solved but I just came across it while searching for something else.

My truck did made this same noise after shutting it off and it was the cap.
 
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