seriously clogged purge line! need help!
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Northstar Engines and System Technical Discussion Discussion, seriously clogged purge line! need help! in Cadillac Engine Technical Discussion; My uncle 98 deville has an overheating issues. I offered him help, and I started looking for overheating threads in ...
  1. #1
    SoWorriedDriver is offline Cadillac Owners Member
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    seriously clogged purge line! need help!

    My uncle 98 deville has an overheating issues. I offered him help, and I started looking for overheating threads in this forum. it was so helpful. a lot of good info.

    So, I started first by checking the purge line to make sure it is ok, but it wasn't. There was no flow at all.

    I tried to blew it with air pressure. but it didn't help.

    the long pipe under the beauty cover is ok and the rubber tube at the ends are ok too. I think it has a plug inside the fitting of the pumphousing or somewhere deeper.

    I tried a finishing nails, clothes hanger, thick wires but it didn't help too, because of that fitting has two 90-degree curves.

    my questions are:

    Could it be ok but there is something else responsible for water/air not coming out of the purge line?
    Or is it certainly clogged?
    If it deeply clogged, do I have to resemble any thing to clean? or could I do it with some special tool, and save myself removing things?

    please help!!

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  3. #2
    dkozloski's Avatar
    dkozloski is offline Cadillac Owners 10000+ Posts
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    Re: seriously clogged purge line! need help!

    A pretty good tool is the string from a weed whacker. In the old days, a piece of speedometer cable in a quarter inch electric drill would do it.
    Don't mess with Binky Bear!


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    SoWorriedDriver is offline Cadillac Owners Member
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    Re: seriously clogged purge line! need help!

    dkozloski,

    Thank you so much for the help.

    I'm going to try the electric drill. but I am not sure I have a speedometer cable.

    I will try with other cables. and be back.

  5. #4
    CadillacSTS42005's Avatar
    CadillacSTS42005 is offline Banned
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    Re: seriously clogged purge line! need help!

    for the mean time just remove the line from the overflow

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    SoWorriedDriver is offline Cadillac Owners Member
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    Re: seriously clogged purge line! need help!

    Quote Originally Posted by CadillacSTS2003 View Post
    for the mean time just remove the line from the overflow
    Yeah, I did that.

    but the 90-degrees curves made it impossible to go deeper. I think I have to resemble the throttle body right? do I need to buy TB gaskets? what should I be aware of before I start?

  7. #6
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    Ranger is offline Cadillac Owners Member
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    Re: seriously clogged purge line! need help!

    I can't imagine that you'd have to disassemble anything to clear it. An .080 diameter weed wacker line should do the job.

  8. #7
    SoWorriedDriver is offline Cadillac Owners Member
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    Re: seriously clogged purge line! need help!

    Quote Originally Posted by Ranger View Post
    I can't imagine that you'd have to disassemble anything to clear it. An .080 diameter weed wacker line should do the job.
    Yeah, I think I went too far on that.

    The thing is that the fitting is so rusty inside.
    a flexible electric wire went ~3" inside the fitting, and still no water/air coming out.
    I would try a weed wacker line, but I don't have it and don't know where to buy it. I'll look for it.

    I'm not going to disassemble any thing now. I'll just try everything I could before I do that.



    Thank you Ranger.
    Thank you CadillacSTS2003


    Thank you gentlemen.

  9. #8
    zonie77 is offline Cadillac Owners Connoisseur
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    Re: seriously clogged purge line! need help!

    It sounds like he's had problems for awhile and has been adding water, even worse would be adding some head gasket fix in a can.

    If he added the HG fix you may have to disassemble to clean it properly. You probably should drain and refill the cooling system with the proper mix.

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