Okay i need some help. Not too sure how to fix this but I have and 87 rx7 and I put a radiator from and 88 se i think. My old radiator leaked and this one seems to be doing the same thing how can I fix this. I looked around also and everything seems to be hooked up correctly?

 

re-check all your coolant hoses and clamps..

 

unless it's something simple like loose clamps ur not going to be able to fix it urself. that rad has plastic tanks and an aluminum core. when i worked in a rad repair shop, we use epoxy to do minor repairs to leaks in the core. the tanks r replaceable if cracked, and even the gasket if it leaks. if u have a hard time finding where the leak is, take it to a shop for them to pressure test it. that way u can find exactly where the leak is.