Timing belt and water pump replaced - now overheating

Discussion in 'Z32 Technical' started by robgrant63, Jan 12, 2019 at 1:31 PM.

  1. robgrant63

    robgrant63 New Member

    Messages:
    5
    Likes Received:
    0
    Trophy Points:
    1
    Location:
    Bardon Qld
    Hi all

    I just had the timing belt changed on my TT - water pump, high flow thermostat and belts were also replaced. The temperature use to sit about half way and never had a problem but on the way home it was almost at the maximum reading in slow traffic or when idling.

    Taking it back to the mechanic but any ideas what the problem might be would be appreciated.
    Rob
     
  2. zx299

    zx299 Well-Known Member

    Messages:
    3,967
    Likes Received:
    67
    Trophy Points:
    48
    Could be any number of things (see check list below) but reliance on the oem temp gauge is a recipe for disaster. It is a poor indicator and you should look at getting a decent aftermarket gauge for your zed

    Did you check the thermostat operation before installation ?

    Is all the air bled out of the system ?

    Was coolant used when radiator refilled ?

    Is water pump or fan belt slipping ?

    Is viscous clutch functioning correctly ?

    Are the fan shrouds fitted correctly ?

    Is your timing still @15 BTDC ?

    Was water pump fitted oem or aftermarket ?
     
  3. robgrant63

    robgrant63 New Member

    Messages:
    5
    Likes Received:
    0
    Trophy Points:
    1
    Location:
    Bardon Qld
    Thanks for the information, much appreciated.
     
  4. rob260

    rob260 Moderator Staff Member

    Messages:
    14,746
    Likes Received:
    165
    Trophy Points:
    63
    Location:
    Sydney (North)
    Probably wasn’t bled correctly before leaving.
     
  5. beaver

    beaver southern zeds

    Messages:
    6,130
    Likes Received:
    17
    Trophy Points:
    38
    Location:
    yarra valley
    To get the air out, run the front up on ramps, open the radiator cap start the engine, let it idle until its up to operating temepture. If there is air in the system the cooliant level will drop, top it up until the level stays constant. Always use a Nissan water pump.
     
  6. robgrant63

    robgrant63 New Member

    Messages:
    5
    Likes Received:
    0
    Trophy Points:
    1
    Location:
    Bardon Qld
    There was air in the system - had to add 1.5 litres. Temp seems fine now so looks like that was the problem. Thanks to all for the advice.
     
  7. Sanouske

    Sanouske Retired Moderator

    Messages:
    4,436
    Likes Received:
    30
    Trophy Points:
    48
    I agree with Rob260.

    Air in the coolant circuit, its a trap for unknowing players.

    Nose the car up on ramps or something, turn the heater on to full and crack the bleed screw on top of the radiator.
     

Share This Page