Hi all,

Well, you'll see in my signature that in June of 2013 I did studs, gaskets, oil cooler heads etc. Went to change the oil and noticed puking...! I'm like, this can't be. I followed everything by the letter. Motorcraft gaskets, MC oil cooler. ARP's torqued to proper specs. I'm not one to hotrod my truck. I do have tunes and they are very mild. Ecno tune, Tow tune and hot tune. I drive in ecno tune 95% of the time and my tow tune pulling my 28' TT.

Kind of depressed cause I'm quite picky on how I do things. Auto/AP mechanic for 35 years. Trying to figure out what went wrong.

Going to do a driving pressure test next week.

When I did the repair truck had 122K on it. Now it has 200K on it.

Wondering if the Motorcraft gaskets has just failed? Felpro'so were not not at the time.

If this holds true that HG'so are blown. Also. I did replace the cap with a new 16 psi cap when repaired.



Thanks for any input.
Eddy

 

Do you still have the OEM EGR cooler Eddy?

Also, do you monitor the pressure in the degas?

 

No EGR. It's there and pluged in, but intake was welded shut at both ends

I will be monitoring the pressure at the degas. Have to make up a tester with my old cap.

 

I was asking about the cooler, not the valve. Sometimes, depending on the type of delete, an "EGR delete" can fail (welded freeze plugs come to mind). Hopefully not head gaskets!

Easiest thing to do for measuring degas pressure is to tee a gauge into the hose (radiator to degas bottle). You don't have to even cut the OEM hose - just add it at the end.

 

Truck seems to have a lot of power! Seems to drive like it did after the repair.

EGR cooler was welded shut, (not Freeze plugs) with 1/4 aluminum plate and replaced back on the truck.

I guess it's possible the welds failed. Going to pull EGR valve and take a look see.

 

This is what I am afraid of. You wouldn't be the first one to have HG fail with OEM gaskets and studs, and this after a few miles have been put on.

Do you keep an eye on boost? Turbo sticks, over boost, heads lift, gaskets fail. Not saying this is what happens, just asking.

.

 

Aluminum plugs and a stainless egr cooler?

How did you do that?

You could have a degas cap that needs to be replaced again

 

My bad. Stainless.

Replaced cap today with non click type. Stant 10238. Did it again.

Producing 24-26lbs of boost.

Turbo cleaned, new unison ring 2 years ago. Turbo has been flawless since then.

 

You could also do the simple test, not sure how accurate it is but it makes sense to me.

Warm the truck up completely, then release all the pressure in the cooling system. Run it and see if all that pressure comes back and how fast.

I am afraid you may be looking at HG again. "What went wrong?" I would really like to know that too. I believe you did everything by the book, and being a mechnic and this is your truck I bet you were very meticulous.

Unless someone can explain otherwise it is my therory that heads lift then the gaskets fail.

Depressing for sure. 10+ yrs and we still don't have this problem licked.

.

 

Be depressed when your dog dies, cause you can't bring him back. Your 6.0 can be fixed. Be happy!

Did you have a bad head gasket when you did the HGs and studs in 2013? And did you send the heads out to a machine shop to have them tested for flatness?

 

Won't comment about a dog?

HG's were blown between 2&3, 6&7. Heads were sent to a known 6.0 shop. Magna-fluxed, pressure tested and check for flatness. Heads were not cracked anywhere. Milled and didn't clean up till .008. Which I heard was max that should be taken off.

I'll be running a pressure test this week to see what my pressures are now.

In the mean time I'll do the run it till its warm. Release pressure and see has fast it builds up pressure again.

Thx for all the replies and idea's

 

It's a hypothetical dog. Just trying to cure your depression.

 

Wow, that sucks! Just finished my hg and studs last year. I now have 12000 miles on it. I hope this isn't in my future.

 

Gaskets were blown where?

 

I hear ya. That one flew right over my head......I got a good laugh out of it.

I might just send the truck to Anthony @SDS next fall of 2018 for a total make over. Planning on keeping her for a long, long time. Truck is paid for and I won't be buying a new one. Took me a year to find this truck.