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New Radiator - Now Overheating


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I had a slight radiatior leak for a while but absolutely no overheating issues and eventually replaced radiator with a Koyo one (along with some new hoses and Koyo Radiator cap).


It's now overheating, my aftermarket water temp went just over 100 and warning light come on. The normal one went much higher. I let the car cool down and got it back to home.


The header tank is full as is the radiator. Going to get it back in with mechanic but he said it doesn't sound like an air lock.


Any ideas what it could be? I hope I haven't done any damage to it!





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Thanks Alex 


Whilst I'm here I wanted to also change the upper radiator hose (it's cut for coolant sensor) and the one I supplied (Mishimoto) is bent and it needs to be straight in order to cut.


Do you have a replacement (blue to match if possible)?




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