need help antifreeze leak 4.9 1993 deville
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HT4100 4.1, 4.5, 4.9 Discussion, need help antifreeze leak 4.9 1993 deville in Cadillac Engine Technical Discussion; Hey everyone I really need some help just before after driving all day my car is leaking antifreeze not the ...
  1. #1
    mike93 is offline Cadillac Owners Fanatic
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    need help antifreeze leak 4.9 1993 deville

    Hey everyone I really need some help just before after driving all day my car is leaking antifreeze not the water pump it's leaking like behind and down under the alternator no wet around water pump could it be hoses hopefully please help me thanks

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    Sevillian273 is offline Cadillac Owners Connoisseur
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    Re: need help antifreeze leak 4.9 1993 deville

    It's one of the heater hoses that run behind the motor and under the crank pulley to the water pump. Run it and watch with a flashlight for the leak spot. It helps if you have a set of ramps. DO NOT keep refilling it with straight water just so you can drive. So many people do that... Antifreeze does alot more than just preventing freezing.

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    mike93 is offline Cadillac Owners Fanatic
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    Re: need help antifreeze leak 4.9 1993 deville

    ok im gonna check tomorrow I have my ramps it was dripping then after 5 or 10 minutes it stopped dripping reservoir and radiator is full but yeah it gottav be that near the crank but not the water pump is that hose easy to do?

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    Re: need help antifreeze leak 4.9 1993 deville

    Its a combination of metal tubes and hoses with clamps. It's tight but accessible. It all depends on where the problem is.

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    mike93 is offline Cadillac Owners Fanatic
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    Re: need help antifreeze leak 4.9 1993 deville

    do you know how much the hoses cost?

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    Re: need help antifreeze leak 4.9 1993 deville


  8. #7
    mike93 is offline Cadillac Owners Fanatic
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    Re: need help antifreeze leak 4.9 1993 deville

    ok cool like 5 bucks i just hope it's really not that bad to do

  9. #8
    mike93 is offline Cadillac Owners Fanatic
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    Re: need help antifreeze leak 4.9 1993 deville

    My neighbor a mechanic pressure tested it nd the lower radiator hose clamp was loose and it looks like the back heater hose needs a new clamp so hopefully thats it

  10. #9
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    Re: need help antifreeze leak 4.9 1993 deville

    Its rare for a clamp to fail. Usually hoses fail right at the edge of a clamp.

  11. #10
    mike93 is offline Cadillac Owners Fanatic
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    Re: need help antifreeze leak 4.9 1993 deville

    It must have just been that the lower radiator hose was loose because it's not leaking now thank god looked under the car and nothing because the radiator hoses are only about 6 months old so hopefully it won't leak anymore

  12. #11
    steelybill is offline Cadillac Owners Enthusiast
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    Re: need help antifreeze leak 4.9 1993 deville

    You will have to have a talk with the guy who replaced the hoses (even if it's you) Clamp was likely not tightened enough...........

  13. #12
    mike93 is offline Cadillac Owners Fanatic
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    Re: need help antifreeze leak 4.9 1993 deville

    yeah I had changed the hoses and yes hose came loose now is nice and tight no leaks but still smell antifreeze

  14. #13
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    Re: need help antifreeze leak 4.9 1993 deville

    Quote Originally Posted by mike93 View Post
    yeah I had changed the hoses and yes hose came loose now is nice and tight no leaks but still smell antifreeze
    The metal heater pipes do rust. I do not think it is the hose or a clamp.

  15. #14
    mike93 is offline Cadillac Owners Fanatic
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    Re: need help antifreeze leak 4.9 1993 deville

    yeah it was in that area when it was leaking not the water pump but in that area where the pipes are this time no smell of antifreeze but after tightening the hose clamp no leak

  16. #15
    brougham is offline Cadillac Owners Master
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    Re: need help antifreeze leak 4.9 1993 deville

    Mine started with the same leak last week but it's from the edge of the water pump. You're lucky yours is just a hose clamp.

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