Blown head gasket
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Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, Blown head gasket in Past Cadillac Vehicle Discussion; I have a blown head gasket on my Cadillac Coupe DeVille '88. I have purchased a product called BLOCK SEAL. ...
  1. #1
    andychersky is offline Cadillac Owners Member
    Join Date
    May 2003
    Posts
    1

    Blown head gasket

    I have a blown head gasket on my Cadillac Coupe DeVille '88.
    I have purchased a product called BLOCK SEAL. In order to
    use it I have to flush the radiator first, but I can't find the
    flush valve on the radiator. If anyone could help me with the
    idea where it's located? Also I'd like to know what's the best thing to do in my case?

    Thank you,
    Andy Chersky

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  3. #2
    Katshot's Avatar
    Katshot is offline Cadillac Owners Master
    Join Date
    Jan 2003
    Location
    Newtown, PA
    Age
    55
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    6,472
    I'll do even better for you Andy.
    I'll tell you to take the Block Seal back and get your money back.
    There's no such thing as a "miracle in a can".
    Your engine is commonly known to experience head gasket failures. Fix it, sell it, whatever but just don't waste your money and time with a head gasket in a can.

  4. #3
    kcnewell is offline Cadillac Owners Connoisseur
    Join Date
    Jan 2003
    Location
    Nevada, Still the land of the free!
    Posts
    2,236
    I agree Dude! Stay away from that crap....You'll just wind up with a blown head gasket AND a bunch of crap in your engine!

  5. #4
    Mongoroach is offline Cadillac Owners Member
    Join Date
    May 2003
    Posts
    4
    I'll throw my 2 cents in on this one.I've used K&W Block seal if that's what you bought.Should be a copper colored can.The stuff can work miracles if used properly.It may or may not help your problem.It depends on how bad it's blown.The petcock for your radiator should be on the bottom of it......Now I will agree that it's not the proper way to fix it.If it's blown bad it usually wont.If you're determined to try it make sure you follow the instructions exactly......If it's a 4100 the headgaskets are a little tough but able to be done by 1 person.I had a 88 seville that I put head gaskets on in the driveway on a Saturday.....Good luck to you.

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