Cooling issues, uneven heat distribution

Discussion in 'Technical' started by Jinxed, Aug 13, 2017.

  1. Jinxed

    Jinxed Moderator

    Hey all, sorry for the vague title but unsure of how to best describe.

    Turned the zed over for the first time in a few weeks.

    First thing noticed was low on coolant. Put in maybe 300ml. Concerning but not a big issue maybe a little seepage somewhere I thought.

    After 2 or 3 minutes of running I shudder down and do some more checks. Notice the top radiator metal hard pipe is EXTREMELY hot, will the bottom hard pipe has no heat at all in it, maybe 10 degrees above ambient temp outside.

    What could this be? I'm imagining possible stuck thermostat or similar.

    I ran the car for another few minutes, temp gauge teasing normal, no weird noises or smells, but pipes remain unevenly heated.

    On a unrelated note.....anyone wanting by a yellow vert with no overheating issues lol
     
    Last edited: Aug 13, 2017
  2. TWIN TERROR

    TWIN TERROR Well-Known Member

    Until the thermostat opens you are going to get a large difference between the top and bottom pipes. Only question that needs answering is the thermostat opening as it should and pump operating ? Also the temp going into the radiator will always be higher than the temp going out once the water flows through.
    Cheers
    Dave
     
  3. Jinxed

    Jinxed Moderator

    So how do I test if its opening. Cars been running long enough for it to open but no joy......
     
  4. DazzaZ32

    DazzaZ32 Active Member

    If your second guessing yourself pull it off and check it better to be safe then out of pocket!!!
     
    Last edited: Aug 13, 2017
  5. rob260

    rob260 Administrator Staff Member

    In a
    In a bucket of hot water before you install it :(
     
  6. Shane001

    Shane001 Well-Known Member

    Sit it on a block of wood in a saucepan of hot water with a thermometer measuring temperature as you bring the water to boil. Confirm it begins opening at the correct oem temperature. If not bin it and get a new one, preferably genuine.
     
  7. Jinxed

    Jinxed Moderator

    Yeah no know how to test a thermostat when it's out of the car......but in it? Not really looking to strip down the front of the engine, but if I have to no geuss I will
     
  8. East Coast Z

    East Coast Z Well-Known Member

    Save yourself some heartache & buy an infra red temp gun.
    They're something like $32.00 on ebay for a cheap one.
     

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