I was told by my mechanic that I have 2 cracked heads.I would like to know for sure if that is the case he said that is the case because there was coolant in the cylinders on both banks. I am now wondering if I need to take them to a machine shop and have them pressure tested and or Magana fluxed. This is a stock 6.0 . He also replaced the fuel injector cups a while back and said that there is no way it is the cups. He then about a month later replace another cup and 2 injectors. He also said he could tell the heads are cracked because of the rust on the bottom of the 2 injectors ,one from each bank.

 

have you pulled your EGR valve to see if there is coolant in there, that is the most likely cause of the coolant in the cylinders, they are prone to rupturing, if it is the Egr COOLER, REBUILD THE OIL COOLER BECAUSE THAT IS WHAT WILL CAUSE THE EGR cooler to fail, they get clogged up and limit how much water can get to the EGr cooler.

 

I was told I have 2 cracked heads . I am going to have them pressure checked to make sure that was the case. I was told there both cracked , but now I am really wanting to be sure. Yes we checked it and it was fine and that made me think it was the cups. There was fuel in the overflow jug also.

 

Yeah, the fuel in the jug is a good sighn they are cracked,

 

Just seems strange that both heads would be cracked, so just to be sure I think a pressure check is in order. The mechanic says I will just be throwing my money away, that they are cracked.

 

Heads can crack and do crack often on modded 6.0's and 6.4's. However, just because you have coolant in the cylinders does NOT in any way guarantee your heads are cracked, that is absurd.

We need more info on the truck here. Mods, miles, work done recently, why the work was done, etc.

Could easily be an EGR cooler, or just bad headgaskets. If gaskets need to be done, I would certainly have the heads gone over anyways. They need to be decked, pressure checked and magnafluxed.

 

Stock NO mods. I had the Fuel injector cups done about 2 months back, took it back a couple of weeks then had 2 cups replaced. Ran fine untill I pulled the trailer and bam tons of diesel in the jug. 179k miles on the truck , looks like the gasket was going bad also. My mechanic got the heads out. He stated that the rust on the bottom of the 2 injectors(one on each bank) have rust down by the bottom. The cups were replaced because of coolant in the overflow jug. I ordered 2 new reman heads from Clearwater or Oddessa. Cost 1150.00 holly crap. Well I guess I am in it now. I just want to do this right. I got a new oil Cooler,and not sure about EGR delete or upgraded cooler. Delete is less money so leaning toward that.Coolant not sure? Since it is stock my friend said that it is not necessary to use the ARP head studs.The ICP is leaking so replacing that while the motor is out of the truck .

 

Why were the original injector cups replaced? All 8 were replaced, but then it had to go back to have 2 more done again? Why? Then it had diesel in the cylinder after those two were replaced again? Sounds like shoddy work to me.

Cups were replaced because of coolant in the overflow jug? Isn't that where coolant is supposed to be? Did you mean fuel in the overflow?

I'm having a hard time visualizing how you're getting fuel and coolant mixing here... usually it's fuel in the oil, or oil in the coolant, or coolant in the cylinders, but how are those two mixing? Odd.

$1150 for both heads? Not terrible, depending what you got. New heads from Ford are about $1k a piece new, including valves/seals etc. Have these heads been decked yet by Odessa? If not, get them decked before reinstalling. Use OEM ford gaskets for the headgaskets too. If you're already this far apart, it's only $400 for studs... it might not be the worst idea to toss them in, it will bring resale up quite a bit too.

 

LOL sorry yes fuel in coolant. Yes the heads are decked and 3 angle valve job.I did my research on this company not one complaint and they do thousands of these heads. Best damn warranty I have seen also.Well besides Ford`s 12-12 . You get a 2 year unlimited mileage and 560.00 towards labor.Yes my friend has all the parts to put it back, stock gaskets from the dealership. I guess he gets extras. He has the new improved head bolts. I want to do the ARP head studs but the oil cooler,exhaust gaskets , manifold gaskets,new fuel injector retaining holders(because one was backed out and stretched) That was my fault. I did not torque the retainer to spec and tightened it to much . I have to get a new fan clutch and misc bolts. I want to do the EGR delete or the upgrade cooler also maybe the delete is better? Then maybe I could swing the studs. I am just frazzeled at the moment sorry. This is my work Truck , it is an Excursion and I love it.It is not like they will make them again either. Studs sound good. May just have to wait another 2 weeks. I also need to get a coolant filtration system. Cat coolant better than the Ford coolant?

 

Your that far into it, id put the arp studs... Sinister coolant filter... Coolant is really up to you. I prefer cat ec1 elc... And depends on your emissions I'd do the egr cooler delete...