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Thread: water/coolant leak in 18rg

  1. #1
    Junior Member 1st year Apprentice sexybackra28's Avatar
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    Default water/coolant leak in 18rg

    there is a water/coolant leak in my 18rg i ve sussed it out and noticed none of my hoses are wet and i presume it is my water pump

    any advice would be great cheers guys

  2. #2
    Junior Member Carport Converter RA35GT's Avatar
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    Default Re: water/coolant leak in 18rg

    hey dood,

    Can you see the water leak on the ground? (Or do you have to keep topping it up).

    Park car over a clean bit of concrete and see if there are any leaks to confirm its an external leak.
    1977 RA35 Celica GT - I4 | 2007 GSV40R Aurion - V6
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  3. #3
    Toymods Net Nazi Too Much Toyota river's Avatar
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    Default Re: water/coolant leak in 18rg

    Hi,

    Also check the welsh plugs on the block. You should see a tell tale water mark (rusty coloured if no inhibitor, or the colour of your inhibitor) around the engine somewhere - assuming it's an external leak.

    seeyuzz
    river
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  4. #4
    Junior Member 1st year Apprentice sexybackra28's Avatar
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    Default Re: water/coolant leak in 18rg

    yeah its an external leak and river i have no idea what you are talking about you know way too much and i know way too little lol break it down even further please? feels like im at school again cheers guys for the info!

  5. #5
    Junior Member Backyard Mechanic chaRwie's Avatar
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    Default Re: water/coolant leak in 18rg

    just leave ur car runnin give it a few revs see where the water drips from

    coolant leaves a light brown colour when it evaporates, water pump is easy to change/seal on 18rs
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    Junior Member Carport Converter RA35GT's Avatar
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    Default Re: water/coolant leak in 18rg

    The welch plug or core plug is the hole below.



    If it leaking it would leave stains down the side. (Had this issue with my original 18RG)
    1977 RA35 Celica GT - I4 | 2007 GSV40R Aurion - V6
    Don't live life being scared of death, live in the fear of not truly living. RP 2012

  7. #7
    Junior Member 1st year Apprentice sexybackra28's Avatar
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    Default Re: water/coolant leak in 18rg

    alright sweet cheers for that guys i will check it out today you guys rock

  8. #8
    TA22 Junkie Backyard Mechanic Silly Rabbit's Avatar
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    Default Re: water/coolant leak in 18rg

    Have a check of the link to see what fellow Toymodders have done. I used Chemiweld on some leak that I had in my old 18rg and she kept on going strong.

    http://www.toymods.net/forums/archiv...p/t-12155.html

    ...but the link should give you some more help on the subject
    “From the five years, 1968-73, if you were an F1 driver at that time, there was a very likely chance that you would have died.”
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  9. #9
    Junior Member 1st year Apprentice sexybackra28's Avatar
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    Default Re: water/coolant leak in 18rg

    okay i checked and it isnt my welch plug no leaks coming from there most likely my waterpump but everything is too close and i cant see where its coming from dammit anyway i did a compression test on the motor and it came up with 135 psi throughout all four cylinders, what should it be? i read it should be at least 170 cheers guys

  10. #10
    Junior Member Carport Converter RA35GT's Avatar
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    Default Re: water/coolant leak in 18rg

    Just to confirm, there are welch plugs on both sides of the block. (like 3 on one side and 4 on the other or something)

    is the water leaking from the front of the engine?

    Can you pinpoint which part of the engine its leaking from?

    Those figures seem awfully low. Did you have the throttle opened?
    1977 RA35 Celica GT - I4 | 2007 GSV40R Aurion - V6
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  11. #11
    Why am i always a.. Domestic Engineer RAAAH23's Avatar
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    Default Re: water/coolant leak in 18rg

    have you checked your heater tap? if you have one.

    mine was leaking and the tracking along the hose back to the water pump
    Cheers, Alex

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  12. #12
    Junior Member 1st year Apprentice sexybackra28's Avatar
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    Default Re: water/coolant leak in 18rg

    i ll track the heater tap today also no it was not on full throttle i ll try again today and yes i do thnk it is awfully low cheers guys for the help rep added

  13. #13
    Junior Member Backyard Mechanic
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    Default Re: water/coolant leak in 18rg

    1) A water pump that is just on its way out might not leak until the engine is hot with some pressure in it.
    2) Some welsh plugs might not be visible. On my 7mge there is one behind the starter motor; another at the back of the block and the engine has to come out; and there is another up front behind the cam gear.

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