Menu

Civic overheating issue

  • Creator
    Topic
  • #581210
    Miles ruudMiles ruud
    Participant

      I have 97 civic dx with the non vtec 1.6 engine, and for some reason it is leaking coolant from the top of the overflow tank. The theremostat and cooling fan both work as they should.

      I have also pressure tested the system and found no other leaks.

      What could it be?
      I havent tested for a head gasket leak, but my oil looks fine, as do my exhaust fumes

    Viewing 15 replies - 1 through 15 (of 32 total)
    • Author
      Replies
    • #581219
      college mancollege man
      Moderator

        If your overflow is leaking then your losing coolant.
        which will make your coolant level low causing the
        overheat. Replace the overflow tank.

        http://www.ericthecarguy.com/faq/what-to-do-when-your-engine-overheats

        #581223
        Miles ruudMiles ruud
        Participant

          The overflow tank is not cracked. It seems as if theres is to much coolant causing it to overflow, very oxymoronic, i know. Would this be caused by a bad rad cap?

          #581309
          EricTheCarGuy 1EricTheCarGuy
          Keymaster

            It could be your radiator cap. There’s more info in the article College man posted on that. It also shows how to check for a head gasket issue. I believe the information you need is in that article however.

            Good luck and keep us posted.

            #581597
            Miles ruudMiles ruud
            Participant

              Put on a new radiator cap, but it still overfills the overflow tank. Im getting a new overflow tank later today

              #581644
              BillBill
              Participant

                Try replacing the radiator cap. It might not be holding pressure on the cooling system.

                #581687
                Miles ruudMiles ruud
                Participant

                  Ive changed the rad cap, and the overflow tank, and the same thing is still happening

                  The next thing i plan to do is bleed the system, when i get my no-spill funnel

                  #581693
                  Miles ruudMiles ruud
                  Participant

                    This is so f%*#ing frustrating, because ive checked everything and its still overfilling the overflow tank, yet the are no leaks in the system. My last guess is that i need a new radiator

                    #581747
                    MiguelMiguel
                    Participant

                      I would definitely look into the head gasket being blown. You can buy and or sometimes rent a block tester at a parts store to test for combustion gases in the cooling system. They are easy to use and usually contain a blue liquid and if it turns yellow it means a combustion/exhaust gas is getting into the cooling system. There are videos on youtube on how to use them.

                      #581755
                      Lee AnnLee Ann
                      Moderator

                        Did you have a chance to bleed the system (that you had mentioned as one of your next steps)?

                        Is it possible there is rust/scale build-up/blockage in the radiator that might be remedied by a flush (drain flush and fill) of the system?

                        How does your coolant look? Is it cloudy or transparent (compare the coolant in your overflow tank to fresh coolant from the coolant jug)?

                        #581758
                        Miles ruudMiles ruud
                        Participant

                          I havent bleed the system, but would air in the system cause coolant to overflow from the overflow tank? Also i will try to get my hands on a combustion leak test kit

                          #581762
                          Lee AnnLee Ann
                          Moderator

                            I would say yes, if the air pocket in the radiator is large enough, the coolant may be inhibited from returning to the radiator. But it’s the valve in the radiator cap that controls the flow between the overflow tank and the radiator. I know you said you replaced it but could the new one be faulty (I hear that from time to time new parts can be defective)? Use OE parts as much as possible. Have you replaced any hoses or had any service to the cooling system recently?

                            Also, do you have other symptoms that warrant a block test? How does your coolant look? Is it cloudy or transparent? And do you have thick white smoke from the tailpipe that persists (I just now read that you said your exhaust fumes seem ok)?

                            #581848
                            EricTheCarGuy 1EricTheCarGuy
                            Keymaster

                              Not sure why you replaced the overflow unless it was damaged. Did you look over the article that was posted? In it was how to bleed the air form the system as well as how to check for a head gasket issue. If you haven’t looked that over yet you might want to as there is likely information in there that will help you.

                              Keep us posted.

                              #581937
                              Miles ruudMiles ruud
                              Participant

                                I replaced the overflow tank because there were 2 small holes on the top of it where the cap screws on, also it was hard to see the coolanf level in it as the outside of it was fairly dirty. My coolant looks the way it should. I havent got a chance to bleed it yet, the non-spill funnel will arrive monday, also i havent had time to ger my hands on the headgasket test kit. I have read the article, and watched your videos talking about cooling system issues, thet very detailed as it pretains to each procedure preformed to test the different componants of the cooling system.

                                Here a little more info on my driving habits.

                                I drive the car about 40-60 miles per day through the pot hot filled streets of San francisco. I traverse many steep hill, and idle a good bit in traffic.

                                Though today in the morning I checked the overflow tank and rad levels and both were up to par, and the car gave me no trouble all day, only turned on the heater when the weather called for it

                                #581986
                                ChrisChris
                                Participant

                                  If the Thermostat, Water Pump, Overflow Bottle and Radiator Cap are in good working condition then most likely you might have air in the system that needs to bleed, which you can do by parking the car on an incline with the front of the car higher than the rear. With the engine off and cool open the radiator cap and top off the radiator. After filling the radiator fill the overflow bottle the max line. The only way for the overflow bottle to fill up with coolant is if the car gets hot, the pressure pushes up on the radiator cap and causes coolant to fill the bottle from the radiator. If it still happens then u need to change the radiator.

                                  #581988
                                  ChrisChris
                                  Participant

                                    Anytime you have overflow and the bottle fills up you will have air in your system which will cause overheating and more coolant will continue to fill the bottle and spill over on the ground.

                                  Viewing 15 replies - 1 through 15 (of 32 total)
                                  • You must be logged in to reply to this topic.
                                  Loading…
                                  slot gacor https://ibufoundation.or.id/totoup/ situs togel situs togel togel online bo togel situs togel situs togel toto macau agen toto situs togel situs toto bo togel situs togel situs togel resmi situs togel situs toto situs togel situs togel situs togel situs toto togel online situs toto rimbatoto rimbatoto rimbatoto situs toto bo toto situs toto situs togel situs toto slot gacor situs toto https://fpt.uho.ac.id/wp-content/themes/bet200/ situs toto slot gacor https://tp.fkip.ulm.ac.id/toto/ slot gacor slot gacor toto slot slot gacor bo togel situs toto situs togel situs togel slot demo slot gacor slot gacor situs togel bo togel https://fpt.uho.ac.id/wp-content/vendor/situs-toto-hotman/ situs togel/ bento4d situs toto situs togel situs toto monperatoto monperatoto monperatoto monperatoto toto slot monperatoto monperatoto situs toto slot gacor slot gacor SLOT GACOR slot gacor situs toto situs togel slot gacor situs toto toto slot slot gacor situs togel situs toto slot gacor situs toto situs toto monperatoto monperatoto monperatoto slot gacor slot gacor monperatoto