Are you deleted? could be air in the system, have you opened up the air valve by the O ring you are talking about? No coolant coming out of your overflow bottle?

 

Thanks



Nope not deleted. There's no coolant coming from the overflow bottle. Sorry but I don't know what air valve you are talking about, this is our first 6.7.

 

I would bet you have a cracked EGR that Is presenting itself when the cooler heats up.

Just a random internet guess though.

Good luck

 

EGR cooler leak???



Thanks dillonjm!!
I just ran the engine up to normal temp, 190ish, for about 20 minutes. I killed the engine, I let it cool some, and took off the EGR tube that connects to the intake. The tube was wet inside. Is there any normal reason for it to be wet inside???

 

Thanks SRich12
I hope it is as easy as a cracked EGR cooler and not a blown head gasket or a cracked head!!!

 

In the shop!!

The truck is in the shop today. We have an extended warranty on the truck so maybe it won't break the bank to get it repaired!! I'll post results of the diagnostic work. $$$$ :smile2::smile2:

 

The repair quote...$$$$$

Our truck is at the dealership now. They did a check on the EGR cooler and said it needed to be replaced. Along with that they listed a lot of other things that they felt should be replaced. The list goes like, all the exhaust components except the muffler, all injectors, EGR cooler, EGR valve, head gasket, all associated gaskets, and hardware to go with the parts.
The quoted repair cost with labor and core charges without tax is $21,339.
I talked to several folks back in TX while deciding what to do next. We know for sure the EGR cooler is leaking and must be replaced, all the other items there are things they say "should" be replaced. I asked them to replace the EGR cooler only and we would go from there. The dealership actually allowed us to furnish the parts for the repair. We ordered an EGR cooler kit from our favorite online store for about $400 and the dealer agreed to install it for $660 + tax.
Once the truck is running we will try to determine if the head gasket is really bad. What is the most accurate test for a bad head gasket on the 6.7 Cummins???

 

Drive it.

Typically it will puke out of the overflow tank if it’s bad as the exhaust gasses get pushed into the coolant.

I’m betting the EGR cooler fixes your issues.

That list looks like typical dealer bull.

You can also test the coolant for signs of combustion gasses.

 

I checked the radiator a couple of times for exhaust bubbles and saw none. I have not checked for blow-by yet but will when we get the truck back. We sure hope there are no more issues other than the EGR cooler. I did ask the dealer to pull an oil sample fron the bottom of the pan also.

 

That dealer practically wanted to rebuild your engine. What’s the point of the warranty if they charged 600 to replace a part you bought? What’s the point of the extended warranty if they are charging you 23k! I’m confused

 

When contacted, the ext-warranty company simply said the EGR cooler is not covered under their warranty. I should contact them again and ask how much they will refund if we cancel the warranty!!

 

What about the 23k dollar bill? How much would they cover? I’d be tempted to tap out, grt a refund and delete

 

What's not covered???


When I asked the warranty folks about this they said nothing in the emissions system is covered. Most everything else is covered on breakdowns.

 

I see several issues here. First never buy extended warranty from anybody except the manufacturer except for used clunkers.
Second, that was not a diagnosis. Any of those things listed are not "should be" items either they are bad or damaged and NEED to be replaced or not. Sales job at work looking for a sucker.
Why did it overheat? Why did you let it get to 245, did it boil out all coolant? Did you add cold water?
A bad head gasket can either cause or result from a hot boil over. That much heat can cause a lot of damage but can be borderline and lucky too. If it did not loose all coolant a lot is probably OK.
Does replacing the EGR cooler take 4 hours or are they double charging hours like many dealers.
I am no 4 gen expert but know how dealers operate.

 

The bad O-ring on the EGR cooler inlet tube started this whole thing. When it overheated it only lost a little over a gallon of coolant. We let it cool to 180 before putting cold water back in and replace the O-ring. I told the dealer the EGR cooler was bad and they came up with all the other things to try to make a bunch of money off of us. We will do the diagnosis for a bad head gasket after they replace the EGR cooler.
If more repairs are needed, like the head gasket, we will transport the truck back to TX and have Texas Diesel Power do the work. They are an honest shop in Weatherford, TX.

 

If your engine is no damaged from coolant contamination and ruined cylinders/pistons, delete the EGR system soon. Major reason for so many problems with early 6.7s, EGR coolant leak into cylinders steam pops and lifts heads/cracks heads.
Personally, I would not keep the engine after ingesting coolant contaminates, kills internals.

Private sale only, all dealers test the motor oil for coolant contamination before tradein offer. Will show for 100,000+++ miles after contaminated, embedded in pistons, cylinder walls, bearings/pump gears

Even Chrysler extended warranties will bite ya in the buttt, lots of exceptions and limitations.
Put the cash in the bank and use for pickup emergencies only.