6.7L Power Stroke - Upper Radiator Hose Leaking
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The Problem: You noticed some coolant on the ground under your 2011+ F250, is always a scary sight. But this is actually a relatively easy fix. Do you see that big Radiator hose on the driver's side of the vehicle? It goes from the top of the radiator to the thermostat housing near the middle/driver side of your engine Typically if you shine a light down on top of the 90-degree fitting (the one on top of your engine) you’ll see some residue or coolant hanging out up there.
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The Fix: There are 2 ways to go about fixing this problem, first is to buy a new O-ring from Ford (the cheapest fix). You’ll need a flat head screwdriver to remove the retaining clip which holds the hose onto the thermostat housing and the radiator. Simply slide that metal retainer out of its grove (toward the EGR cooler on the thermostat housing) & pull upward on the one at the radiator. Once you have the hose off, you can use a smaller screwdriver or a 90-degree pick tool to remove and replace the O-ring at the hose where it connects to the thermostat housing. Once finished, simply slide the metal retainers back into place and work both connections back on, you’ll hear a “click” once they're both seated. Then refill your cooling system with Ford OEM Coolant and you’re back on the road!
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Fix#2: Repeat all the steps above but instead of replacing the O- ring, purchase a new hose from Ford, O’Reilly’s, or AutoZone and simply replace the entire hose!