the notorious 4.1 thump
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HT4100 4.1, 4.5, 4.9 Discussion, the notorious 4.1 thump in Cadillac Engine Technical Discussion; You are not giving us much to go on here Steelybill, LOL!...
  1. #1
    daniel58 is offline Cadillac Owners Fanatic
    Automobile(s): 58 Coupe Deville, 77 Coupe deville, 90 Deville
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    Sep 2009
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    Re: the notorious 4.1 thump

    You are not giving us much to go on here Steelybill, LOL!

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  3. #2
    the recluse is offline Cadillac Owners Connoisseur
    Automobile(s): 2002 STS, 1991 Eldorado
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    Feb 2009
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    Jacksonville, FL
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    Re: the notorious 4.1 thump

    Maybe the "thump" was the motor block hitting the floor...

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