how can I be sure it is my radiator leaking and not my heater core? on 1994 Ford E-150

I can't see where it is leaking exacly when I put fluid in it pours out as fast as it goes in

by in Wilmington, DE on July 09, 2013
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3 answers
ANSWER by , July 09, 2013
We can easily tell by pressure testing the cooling system. The average cost of diagnosis is about $25
ANSWER by , July 09, 2013
agree with #1
ANSWER by , July 09, 2013
Is it leaking out in the front near the bumper onto your feet as you fill the rad. or at the rear near the firewall/windshield area? Got to be able to narrow it down some, IF it leaks that bad! Let a helper pour some water in while you watch where it comes out at.