yes but either should put compression in the cooling system. I'll just have to start at the top and work my way down until I find the problem.

 

Under normal conditions I have found the radiator pressure to be greatest right after turning the engine off.

Coolant not circulating, no air flow through the radiator and the cylinders and heads are still hot which causes a spike in the cooling system pressure.

George, the turbo boost you are running is only about 1/2 what the radiator cap is rated at, so I can see coolant being forced to go where boost is not going.
You would not be dealing with compression pressures in the intake manifold.

The fact that the coolant is going into the cylinders also eliminates the plate between the water pump and timing gears, a leak there would put coolant straight into the oil pan.

The only place I could see a head crack doing this would be if the crack was located between the valve and either the intake or exhaust manifold in the ports.
That would eliminate the compression pressure, but still allow coolant into the cylinder when the valve opens.

 

yeah its either a crack above a valve or the valley pan gasket. It will ahve to wait since I haven't been able to get to the dmv to register my jeep. If i let the presure off the cooling system when i shut it off it doesn't do it so i think that will get me by untill i get the jeep going so i can get into it and see whats what.

 

Do i have to pull the turbo to get the intake hat off?

 

Just had a thought I'm getting oil in the coolant so that probly rules out a crack btween the valve and intake/exaust port. Hopefully its just a vally pan gasket. Of couse that could be a seperate issue as well.

 

On turbo motors my prefference is pull the engine to work on them.
I even would rather pull a NA motor to work on it.

My achey old bones just don't like getting in and out of the engine bay anymore though.

 

If i have to pull the heads I'll pull the motor but don't think it would be worht it if its just the vally pan.

 

that was me just givin you a hard time motor sure looks good

 

Well to today i was messing with it and noticed there was alot of oil in the cdr tube and also coolant but theres no coolant in the crank case. I sure love making payments on a truck I cant drive or afford to fix even if its just the vally pan gaskets thanks big oil.

 

Well I was checking some stuff out on it today and aparently 1+1=3 every thing it was doing made me think it was above the valves but I pressureside the cooling system and couldn't see anything in the intake with my scope so I pulled the glow plugs and cranked it no water shot out. But now i could hear a gargling sound in the intake sounded like it was coming from #1 or #3 put a piece of hose over the glow plug holes and it was #3 cranked it and it blew coolant out and the noise couldn't be heard from the intake but could still hear it from the #3 glow plug hole. So it must be either a craked head, deck or head gasket or possibly a pin hole from cavitation. I'm hoping for one of the first three even though I cant realy aford to fix them. But I think cavitation is unlikely because in the first possision it did not leak and I'm guessing that the cylinder was at tdc, the second position the intake valve was open and theird it was closed.

 

The #3 cylinder seems unlikely as a source for cavitation. My understanding is that #7 or 8 are the ones that typically have problems.

Were you able to get your other vehicle on the road?

 

kinda I got a moving permit I still have to get it smogged but I know some people that know some people if it wont pass.

Cavitation isn't out of the question the biggest problem with the franklins was they would only sleeve 7 and 8 then awhile later 1 or 3 would leak. And I am horribly unlucky.

The more I think about it the more I think its probly cavitation or a crack at the bottom of the cylinder above the piston when the piston is at bdc because that would explain why i have no compression in the coolant since there would be very litle compression down there and the exaust valve would be opening at that point relieving combustion pressure. I have no coolant in the crank case but typicly engines stop in three places so as far as i can figure one spot is down below the crack on the intake stroke one is below the crack on either compresion or exaust and one is with the rings covering the crack.

 

What I would do first is make sure you have some other wheels that you can drive in the mean time. I still think its possible you only have a leaking head gasket. If that is the case, all you really need is some time to deal with it. As others have said, pull the head as time permits and make sure you know what has happened before you look for a new motor. You don't have much to loose and possibly a lot to gain if all thats wrong is a leaking head gasket.

My 6.9 had a leaking head gasket and I didn't even know until I tore into it. Mine only weeped slightly on the outside of the block in a hidden place that was impossible to see with the engine still in the truck. There was no performance loss and it still ran great.

 

well pulled it apart today and when i pulled the intake the intake runner in the head was full of coolant and the cylinder was at tdc and the head gasket looked fine no trails. I think the heads craked right on the valve seat. this makes no sens I presureised the cooling system and it didn't leak then I cranked it over and I could hear it hising from the intake and the glow plug hole on #3 then craked it again and could only hear it from the glow plug hole wich would mean it is below the valve but now that i took it apart its above the valve. I seariously sat there for and hour in compleet shock because of what it did with the coolant presure tester it had to be either a pin hole in the cylinder or a blown head gasket and I couldn't and still cant figure out how this is even possible. Then it swiched to where am i going to get a head I know i cant aford one pluss I'm probly getting 72 houres notice to get out of the place I'm living on monday.

 

Inspect the area between the intake and exhaust valve.

I have seen many cracks in this area.