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where does the coolant go?

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    #16
    Heater core leak?

    I was up above it, Now I'm down in it ~ Entropy - A Build thread.
    @Zakspeed_US

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      #17
      Originally posted by moatilliatta View Post
      Heater core leak?
      cabin is dry. heat blows hot. would have shown in pressure test... sent from hell using Tapatalk
      ~~~~~~~~~~~~~~~~~
      '90 325i sedan daily driven
      '85 325e coupe also a daily

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        #18
        Originally posted by roguetoaster View Post
        I don't know about that, but you can reference "The Beast" for the recipe.
        https://youtu.be/Hyag7lR8CPA sent from hell using Tapatalk
        ~~~~~~~~~~~~~~~~~
        '90 325i sedan daily driven
        '85 325e coupe also a daily

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          #19
          Sounds like its dumping somewhere when it cools. Maybe its making down the HVAC drains?

          They usually leak on the inlet / outlet side though into the floorboard.. .

          I assume this is a manual with no trans cooler in the radiator?


          I was up above it, Now I'm down in it ~ Entropy - A Build thread.
          @Zakspeed_US

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            #20
            nope it's an autotragic. you can eat off my garage floor. no leaks. no drips. sent from hell using Tapatalk
            ~~~~~~~~~~~~~~~~~
            '90 325i sedan daily driven
            '85 325e coupe also a daily

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              #21
              Originally posted by cheffy30 View Post
              https://youtu.be/Hyag7lR8CPA sent from hell using Tapatalk
              I've seen another version of that before.

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                #22
                Trans cooler is in radiator?

                check your trans fluid for coolant?

                Its usually the other way around though..

                I was up above it, Now I'm down in it ~ Entropy - A Build thread.
                @Zakspeed_US

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                  #23
                  If hot/cold pressure test holds...
                  And no cross contamination with trans fluid/coolant...
                  Try a combustion gas tester (Tee Kay) in the coolant.

                  I have the same issue after replacing all the major components in the cooling system.
                  All hoses, tank, heater core, valve etc.
                  No oil in coolant or vice versa.
                  The level in the expansion tank drops 1/4 to 1/2 inch after a few hours drive.

                  Was also verified by an old school mechanic with the cold socket extension through the spar plug hole trick

                  Will get a new head gasket & head reco shortly
                  E30 320i vert
                  But daily drive is Volvo V60 Polestar

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                    #24
                    I don't know if this will work but:

                    I've always been able to find coolant leaks by getting the engine good and hot by normal driving. Then park the car and LEAVE THE HOOD CLOSED for 5 minutes. After this 5 minute period, open the hood and search everywhere in he engine and passenger compartment for leaking coolant.

                    This period (5 minutes after shutdown) is the time that is most likely to cause a leak because the temperature and pressures are the highest.

                    Good luck.

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                      #25
                      so... I have noticed it being leaked out of the blow hose on the neck of the expansion tank cap. the hose that dumps into the wheel well has been showing signs of leaking. I am tempted to call that the issue with the loss. now... why does it expand out of there is the question. sent from hell using Tapatalk
                      ~~~~~~~~~~~~~~~~~
                      '90 325i sedan daily driven
                      '85 325e coupe also a daily

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                        #26
                        So, would you say that you boil over more slowly now that you've come to terms with your coolant consumption?

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                          #27
                          I'm rarely at a simmer... ever... but every day I'm puttin in 1/2 qt. I'll pull the expansion tank in the morning and rebuild it... maybe something is clogged? sent from hell using Tapatalk
                          ~~~~~~~~~~~~~~~~~
                          '90 325i sedan daily driven
                          '85 325e coupe also a daily

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                            #28
                            dude. check the hose i told you to. i have a sneaking suspicion that's your issue. buy a new tank, too.
                            '70 911s | '72 2002 | '88 M5 | '89 330is | '89 M3 | '95 911 | '02 M5 | '04 RR HSE

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                              #29
                              New tank and cap.

                              maybe a gauge on the coolant system to see if your over pressuring it.

                              anything old, replace it, inspect it, rule it out.

                              I was up above it, Now I'm down in it ~ Entropy - A Build thread.
                              @Zakspeed_US

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                                #30
                                heh

                                I was up above it, Now I'm down in it ~ Entropy - A Build thread.
                                @Zakspeed_US

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