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Overheating Cause?

Just got ny car back from Nissan last night. After changing Water pump and timing belt due to bad water leak from pump. Took car out for spin and it started to overheat after apprx 30 miles.

 

Went back to nissan today and they said it was down on coolant so topped it back up and took it for a run.

 

There is no sign of any leakage and they finally said there must have been an air blockage in the coolant system whch ment they didnt put enough coolant in yesterday.

 

Could the problem have been as simple as this or is there some other reasonwhy the Z overheats.

 

They said head gasket seemed fine so that was thankfully ruled out as the cause.

 

Cheers

Roy

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    sounds like an airlock - just keep an eye on the water level / temp for a while

     

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    I feel the need, the need for speed!

     

    myzx2.jpg

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    bled the system? Theres a little screw thing on the LHS of the radiator, keep it open till you have no air bubbles coming out, make sure you do this with the heater on full blast too.

     

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    engineoval.jpg

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