hey everyone, could someone please tell me where the coolant hose that comes off the head by the intake manifold goes to i recently bought a 03 evo and it was blocked off but leaking so would like to fix it right and not just block it off again but i cant for the life of me figure out where it goes to any help is greatly appreciated

 

I could be wrong, but I feel like that goes to your HVAC system heater core inside the car. It could also be the lines that go to your throttle body for idle control via heat. Look for two nozzles sticking out from the fire wall. Does your car have a working heater? I would check for a blocked off connection at the coolant hard pipe behind the block that runs to the thermostat housing. People like to reconfigure these things all the time.

 

thanks for the reply, ive looked everywhere and cant seem to find it the car has working heat and cant find a open port on the throttle body or iacv guess ill go investigate more

 

thats one of the heater core hose connections

 

There are 2 hoses that go into the fire wall for the heater (feed & return)

The hose kit no. = Mitsubishi7805A088

 

Currently the heater core is connected to the pipe that comes off the water pump and the other hose goes to the thermostat housing is this not right?

 

There's two coolant hoses connected to the throttle body, two to the heater core, two to the turbo and two to the radiator.

 

it goes to the throttle body. That exact hose leaked on me last year. You might have to take the throttle body off to get to the lines coming out of it. If it has an aftermarket throttle body it might not have those lines. Could be the reason it was blocked off.
but.. i see it has the original intercooler hose so probably stock throttle body. Those lines should be there, kinda facing down.

 

Looks like you have a JDM EVO 7 Engine.

The best way to correct it is to get the following:

• EVO 9 Water pipe / 1310A259
• EVO 9 Thermostat Case / MD363250
• EVO 9 Throttle body hoses / 1310A086 and 1310A087
• EVO 9 Heater hoses / 7805A088
• EVO 9 lower radiator hose / 1370A098
• EVO 9 turbo water return hose / MD366383

You could probably get the water pipe and thermostat case used but I would highly recommend at least buying the hoses new.