losing coolant

Discussion in 'Maintenance/Repair' started by Justin Danger, Aug 26, 2016.

  1. Justin Danger

    Justin Danger Enthusiast

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    So I did a HG job a little while back, now I seem to be losing coolant (water actually). I've run water in it since the HG job, and now it seems like every few days the water level in the rad is down to the fins. There are no leaks, no drips, and doesn't seem to be any contamination in my oil, and I'm not blowing steam out my tailpipe. My temp gauge never goes above half, but I don't know if i trust it.
    Most of my driving is to town and back, about 10 miles going 55mph, and after 3 or 4 trips like this, I have to top of my radiator.
    I've got a lot of ideas of what could be wrong, but thought I would ask some wiser minds here, any input would help thanks!
     
  2. jetas

    jetas Grand Toyotaholic

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    Did you burp the cooling system after the HG ?
     
  3. Justin Danger

    Justin Danger Enthusiast

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    Well, after everything was back together, I ran a garden hose through the system, then parked it on an incline and ran the engine with the cap off for a while, then topped it off.
     
  4. Lowtide671

    Lowtide671 Enthusiast

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    Check you oil level... Is it rising??
     
  5. TRUCK ACTION

    TRUCK ACTION Grand Toyotaholic

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    Have it tested, they use a smog check probe inserted into the radiator neck, if hydrocarbons are present you have a faulted head gasket or cracked head!!
     
  6. Justin Danger

    Justin Danger Enthusiast

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    Lowtide, my oil is steady and not milky

    truckaction, those are my biggest fears, can't exactly afford a new head right now
     
  7. Justin Danger

    Justin Danger Enthusiast

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    so would any shop be able to do that, or would I have to take it to a smog check spot?
     
  8. TRUCK ACTION

    TRUCK ACTION Grand Toyotaholic

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    Call the repair shops in your area & or a Toyota dealer!
    And you don't always see the water in the oil, the water can evaporate has fast as it disperses!
     
  9. jetas

    jetas Grand Toyotaholic

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    Again did you burp the system? If not the shit can over flow and dump out some out of the radiator. Keep adding and more than likely the same thing will keep happening.

    Go after it the easy way first
     
  10. fred heath

    fred heath Enthusiast

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    With your engine at operating temperature, pull the oil dip stick and let a few drops fall on the exhaust manifold. If it smokes only, there is no water in the oil. If it "sizzles", you've got some water in there.
     
  11. Lowtide671

    Lowtide671 Enthusiast

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    Just have it pressure tested. Any shop like Firestone or whatever is in your area will be able to do this..... This will tell you indefinitely if you have a cooling system leak.
     
  12. Lowtide671

    Lowtide671 Enthusiast

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    If their is no leak from the out side of the system it have to be a HG.... Only other place it could be leaking....
     
  13. Justin Danger

    Justin Danger Enthusiast

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    thanks guys, looks like today will be burping day
     
  14. Justin Danger

    Justin Danger Enthusiast

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    until I've found out whether or not it is a blown HG, should I continue with putting just water in the system?
     
  15. Lowtide671

    Lowtide671 Enthusiast

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    To be honest it's not going to matter. Not like it's -39 this time of year....
     
  16. fred heath

    fred heath Enthusiast

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    If the water is going into the crankcase it will dilute the oil. You could end up with major damage to bearings.
     
  17. Litneon

    Litneon Super Moderator Staff Member

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    Water in the oil is fairly obvious. He said he's checked for that.

    What thermostat and radiator cap are you running? Do you have an overflow tank?
     
  18. Justin Danger

    Justin Danger Enthusiast

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    My thinking was that water would be less harmful than coolant in the oil maybe?

    I'm running a 195* t-stat with the toggle (am thinking of getting the 2 stage), and have a 13psi cap with the stock overflow tank.
     
  19. tacobo670

    tacobo670 Addict

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    .... IMO, if your just adding straight WATER into the cooling system, it will boil/burn off. and then you will end up with no "cooling", making u think u have a leak cuz there is no WATER in the system.
    u need real antifreeze coolant so it wont boil away.

    try and remove the spark plugs, look into the cylinder. if piston tops look clean, then u prob are leaking coolant/water into the cylinder. in some cases, smoke may or may not be visible through the exhaust.
    if its leaking into the oil, it will definitely show up. one way to check is remove the drain plug. if water got into the oil, it should be the first thing to come out.

    just my $0.02
    hope this helps
     
  20. tacobo670

    tacobo670 Addict

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    on a stranger note, if the evap core was leaking, and the water was draining out the drain tube..... this may be one case as well
     

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