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Coolant flow

427 views 5 replies 3 participants last post by  TKOPerformance  
#1 ·
What paths does the oil coolant flow from the pump?
Is there away that replacing the Oil Cooler can create a vaccum lock in the system on the driver's side head?
 
#2 ·
See attached
 

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#3 ·
I wouldn't see how that would be possible. Typically after any cooling system work, including replacing the OC, you will need to run the truck around for a couple days and add coolant as needed while it purges the air from the system. I've never needed to do any more than that, even when starting with a completely empty system. What are the symptoms you are experiencing?
 
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#4 ·
I have not heat in my heater core. The exhaust gas temp will sky rocket on the Drivers side. Oil temp and coolant temp stay steadily with in 10 to 20 degrees of each other even with Exhaust gas temps high. I have pressure build up in the coolant system above that of standard cap pressure to where it will spit out coolant, even when just below the fill line while cold.
I just went out after around 10 days and removed my reservoir cap to check the coolant and even though it is low I still had pressure in the system. So if I have a head gasket leak shouldn't I have had the pressure bleed off by now? I have ordered a kit to check for exhaust in the coolant system.
 
#5 ·
Are the two vent hoses still connected to the degas bottle (one from the radiator and one from the intake manifold)?
 
#6 ·
No, just because the cooling system has pressure in it does not mean that the HGs are fine. When the HGs fail they allow cylinder pressure to leak into the cooling system, because that pressure is MUCH higher than the cooling system pressure. At first this may only happen at peak cylinder pressure situations, high boost, etc. The HG becomes kind of a one way valve that allows cylinder pressure into the cooling system, but not cooling system pressure into the cylinder(s). Cooling system pressure is only like 13psi. When coolant starts leaking into the cylinder(s) that's end stage HG failure. You at that point are days away from locking the engine up on cranking from it sucking in too much coolant. The problem just doesn't start off that bad; it progresses until it becomes that bad.