Featuring Critical Knowledge For Ford Power Stroke Diesel Owners


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7.3 Liter
1994-2003
6.0 Liter
2003-2007
6.4 Liter
2008-2010
6.7 Liter
2010+
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Very Broken PSD's... The How & Why It Happened

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6.7L EGR Cooler Failure and Cracked Cylinder Head

This video discusses coolant consumption in a 6.7L which seems to be a recurring problem. It is not common but we are starting to see issues at about 130K-160K miles, particularly in ambulances. Is this something to be alarmed about? Probably not, this is an ambulance and when it gets run hard, it gets run hard, otherwise it is sitting there idling. It gets a lot of severe duty that normal pick-up trucks don’t get. But when I see something that is a trend, especially in the ambulance trucks, I am going to tell you about it. That is what POWERSTROKEHELP.COM is all about.

I have worked with this particular ambulance crew for years. They are tough on their trucks. They take care of them, but they run them hard. At about 150K miles this crew started seeing their coolant levels drop in their engine coolant.

There are two separate cooling systems in a 6.7. There is an accessory cooling system for the charger cooler, the fuel heater, and the EGR cooler. People don’t know that the EGR cooler has two halves with part of the EGR cooler run by the engine coolant and part of it run by this secondary cooling system. The secondary cooling system sits on top of the valve cover on the passenger side on top of the engine. These ports are run by the secondary cooling system but it only works with half of the EGR system. The coolant which actually comes from the engine runs through half of this. The reason is to get the EGR cooler hot enough so that it won’t coke up and build up carbon. If you have a 6.7 truck that is consuming coolant and you can’t seem to find it, you need to replace the EGR cooler. It is just that simple.

However, sometimes replacing the EGR cooler simply doesn’t fix it and it is still consuming coolant. We are finding that there are heads, especially in the 2011’s and 2012’s, which have been prone to cracking. 

We sent the passenger side cylinder heads to the machine shop and we found out it was cracked. At this point, we are going to install the Bigg Dogg, o-ring, completely remanufactured cylinder heads. We have installed about 50 sets of these so far and once we are done with them, they are never a problem again
. ~Bill Hewitt

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PSH Newsdesk...
How to Buy a Used Powerstroke Truck
This video delves into the top things to look for when you are in the market for a used Powerstroke Diesel truck. Discussed are the advantages and pit falls of purchasing from dealers as well as individuals. Follow the inspection worksheet to uncover potentially expensive pitfalls.
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Spot, The PSH Shop Truck & Faithful Mule Dies at 798,169 Miles...
Spot, our shop truck you see featured in many of our repair videos, just suffered a catastrophic failure (Threw a rod destroying the block). We did a postmortem tear-down so you can see the wear points of a 7.3L Powerstroke engine with an amazing 798K miles on the clock. You'll be amazed, just like we were, at the condition of critical components. If you own a 7.3 PSD you need to view this video!
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Master Mechanic Video Repair Series Just Released...
PowerstrokeHelp.com has just released the Master Mechanic Video Repair Series, which covers both 7.3L & 6.0L Powerstroke diesel repair. See the repair procedures performed step-by-step. Learn where the trouble spots are that will cost you $$. See how we train our mechanics to fix Powerstroke's! More...
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7.3L Powerstroke Performance Modifications..
Follow a step-by-step breakdown of recommended mods for your 7.3L. See the results as we dyno test after each modification with detailed results.
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6.0L Powerstroke Catastrophic Engine Failure…
This is our most popular video on our free side. See the cascading effect of running this engine hot. Heat is the #1 killer of the 6.0L, which over time causes component breakdown and eventually destroys the engine!
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