Coolant in the Valley
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webb06
Active member
Coolant pool in front of the turbo. This connection was the first thing I checked IIRC they are prone to fail and leak.
Any idea where to look next? Working on tracking down a pressure tester at the moment.
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Check the other end of the line that feed the turbo. It'll have a rubber hose and clamp on it. Also check the hose coming from the heater core that eventually ends up in the coolant crossover pipe connecting the heads at the front of the engine
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I checked everything I had apart when I did the EGR delete. That metal pipe to to the snap conector that leads to the heater is dry. The tiny hose up top is dry. The short section of rubber hose leading to the turbo is dry.
I could be wrong but I would think a drip would hang on the leaking connection
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webb06
Active member
You're thinking correctly. I'd wash it out and make sure it's dry and run it. Easier to find that way, unless you get a pressure tester
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BuiltPowerStrokeTough
Member
Check these two points. I had mine leak a long time ago in the valley which at first appeared that the trans line was leaking. After further inspection, found these points were leaking. Removed the stupid little pinch clamps that the arrows are pointing to and put actual hose clamps on instead. Hasnt leaked since. Hope this helps!
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Well I got a hold of a pressure tester. I put 16 psi on it over an hour ago and have yet to see any drop in pressure or drips. I will replace the short piece of hose and use hose clamps as builtpowerstroketough suggested.
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Replaced the whole line to the turbo along with the snap fitting on the end before putting the intake back on. Guy at work suggested getting it warmed up to see if it held pressure.
It does not. When the truck is warm it loses a pound in about 5-10 min at 16 psi. Running out of ideas. Think I'm going to go get a bore scope camera to see if I can look for leaks while the truck is warm.
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It does not. When the truck is warm it loses a pound in about 5-10 min at 16 psi. Running out of ideas. Think I'm going to go get a bore scope camera to see if I can look for leaks while the truck is warm.
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webb06
Active member
You can run the engine with the upper and lower manifold off, that might help you see a little better. So when it's losing pressure you can't see any leaks?
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when the engine is warm and you pressure it up you will loose pressure as it cools off. IF you cant see an actual leak don't get too excited just yet. Try to dry the valley the best you can, a simple water hose will do good enough on that just flush it out. You will know if you have a coolant leak because it will turn back red.
I had the same issue on the turbo supply line, it would only leak hot and after a hard pull. It was the pinch clamps, i didn't push it up far enough.
I almost bet you have the problem fixed.
One more place to look is the upper radiator hose, its easy to crack that end of it and make it leak hot and under pressure. Check there as well. If it leeks from the rear corner it will leak down in the valley as well.
I had the same issue on the turbo supply line, it would only leak hot and after a hard pull. It was the pinch clamps, i didn't push it up far enough.
I almost bet you have the problem fixed.
One more place to look is the upper radiator hose, its easy to crack that end of it and make it leak hot and under pressure. Check there as well. If it leeks from the rear corner it will leak down in the valley as well.
But I filled it drove for about an hour, topped it off ( only down about 1/4" inch) then drove for an hour and it's out of site in the tank.
Think the next place I'm going to look at will be around the thermostat area
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Think the next place I'm going to look at will be around the thermostat area
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webb06
Active member
That line should be feed. Exit is through the pedestal on the bottom
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Cheap6.7
Member
I had a cracked O-ring in the coolent tube.... I know you can't just pull that and look but if all else failes then give it a try.
Cheap6.7
Member
Well it's the L shaped pipe located in front of the turbo but not on the turbo above the valley. Comes out going back of truck and turns to passenger side with the white plastic push lock. Lol best I can give you because I don't know proper name for it. It has a quarter (25 cents) size O ring on it.
MorganY
New member
Metal coolant tube for the heater core where it bolts into the crossover manifold, yellow O-ring. Just did one.
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