Under Pressure

Heating, Cooling & AC

  1. khryslerkid

    khryslerkid FBBO Gold Member FBBO Gold Member

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    Has anyone experienced the cooling system building up pressure all on its own?

    I'm useing a "Water Wetter" type of additive called "Cool It" and distilled water. When I first started the engine for break-in, the water became stained but since then it has cleared up nicely.

    After running the car, the last time, I noticed pressure in the system and that's normal. I released the pressure and noticed a couple of days later it built up considerable pressure again. So I released the pressure again. A couple of days later it has built up again? I haven't started the car for over a week and it still does this. I'm thinking there's a chemical reaction taking place. The additive did make a difference in cleaning up the stained water after the initial fire up so maybe that's what's taking place? I'm going to find one of those red leaver, release radiator caps if this keeps up.

     
  2. moparnation74

    moparnation74 FBBO Gold Member FBBO Gold Member

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    Have you tried a different radiator cap?(not the lever type)
     
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    • kiwigtx

      kiwigtx International Mod Staff Member FBBO Gold Member

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      Have you 'burped' the system to get rid of any excess air in the water system?:thumbsup:
       
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      • Cranky

        Cranky Banned Staff Member FBBO Gold Member

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        Is your douchebag vented?
         
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        • kiwigtx

          kiwigtx International Mod Staff Member FBBO Gold Member

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          ScentedDeadGuppy.gif
           
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          • khryslerkid

            khryslerkid FBBO Gold Member FBBO Gold Member

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            It's building pressure overnight without even starting the car.
            Yes, the t stat opens fine and it has great circulation.

            I wasn't aware they had a vent. I'll check that.
             
          • Cranky

            Cranky Banned Staff Member FBBO Gold Member

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            Well, didn't know what else to say lol but a totally sealed system can do weird things.......and it's possible for a douchebag to overflow too and the water entering one has to displace the air that's in it. If there's no vent, it'll pressure up. Just ask any woman :D
             
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            • oldbee

              oldbee FBBO Gold Member FBBO Gold Member

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              That is very weird. Is somebody sneaking in & firing up the car? Lol, it's been couple weeks at least since you fired it up.
               
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              • slimt

                slimt FBBO Gold Member FBBO Gold Member

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                Anyone ever tell you.. Old Mopars are HOT running or Not..
                 
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                • Fran Blacker

                  Fran Blacker FBBO Gold Member FBBO Gold Member

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                  Kid did you drink the distilled water and put the beer in by mistake?:lol:
                   
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                  • Darter6

                    Darter6 FBBO Gold Member FBBO Gold Member

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                    I have used "Cool It" many times and never noticed that.Not sayin' that it didn't happen. Huh...Could be..Where do you buy "Cool It" now a days ?
                     
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                    • PurpleBeeper

                      PurpleBeeper Well-Known Member

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                      You know, you're idea of a chemical reaction going on in the cooling system is a good one, seriously. Here's the safety data sheet info and link for Kool It. The only way I can see any gas forming is if you have some leftover acid in the cooling system from some type of radiator flush. Kool It is basic & shouldn't form gas bubbles on it's own.

                      I did here about sodium nitrite doing some weird reaction with sulfur or something (?) that was used in some radiator hoses, but that could be urban legend...just what I heard.

                      Was your distilled water + Kool It coolant blend pink when you added it? You want to have your coolant basic (pH >7) and phenolphthalein will be pink in this pH (if there's enough in there to see once it's diluted with water). When it gets acidic (pH <7), phenolphthalein turns clear. Low pH coolant (<8) means corrosion in your engine.

                      http://www.lubegard.com/pdfs/sds/SD...nt-OSHA-2012-HazCom-(Non-Corr-2015-05-20).pdf

                      3.1 MIXTURES
                      Ingredient CAS No Wt. %
                      Sodium nitrite 7632-00-0 0.5 - 1.5
                      Sodium metasilicate 6834-92-0 0.1 - 1
                      Sodium tetraborate decahydrate 1303-96-4 0.1 - 1
                      Sodium hydroxide 1310-73-2 0.1 - 1
                      Potassium hydroxide 1310-58-3 0.1 - 1
                      Phenolphthalein 77-09-8 < 0.1
                       
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                      • khryslerkid

                        khryslerkid FBBO Gold Member FBBO Gold Member

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                        I got it from Auto Plus. It's an old parts place down the road from me. I'm draining a gallon out before too long to add antifreeze. I did buy "Water Wetter" from Summit to use in the spring if I think it needs it.

                        Wow Beeper! It might take me a few to get my head wrapped around that. Lol

                        It did loose some of it's pinkish color when the rust stain disappeared. It's all new, rebuilt block, new aluminum radiator ect.

                        I wonder if I would just get a ph kit and check it?

                        I'm not seeing any bubbles or smelling any weird odors but it puzzles me how it's building pressure in a day or two, sitting there cold.

                        Thanks for the info and data sheet.
                         
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                        • kiwigtx

                          kiwigtx International Mod Staff Member FBBO Gold Member

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                          Are you quite sure you used "Cool It" and not "Kool Aid"? :lol:
                           
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                          • khryslerkid

                            khryslerkid FBBO Gold Member FBBO Gold Member

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                            We'll have to take this to a different forum if we're going to talk about Kool Aid. Ohhh Yeah!
                             
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                            • khryslerkid

                              khryslerkid FBBO Gold Member FBBO Gold Member

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                              Maybe I should drain it out and try adding some Massengill instead? :lol:
                              51G5SLsOHRL._SY400_.jpg
                               
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                              • not so famous bob

                                not so famous bob Well-Known Member

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                              • kiwigtx

                                kiwigtx International Mod Staff Member FBBO Gold Member

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                                :lol:
                                 
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                                • oldbee

                                  oldbee FBBO Gold Member FBBO Gold Member

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                                  I think I saw RC at about 20secs.!!!
                                   
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                                  • kiwigtx

                                    kiwigtx International Mod Staff Member FBBO Gold Member

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                                    :rofl: yes indeed.
                                     
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