Coolant issue
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Coolant issue
On my 2006 Ford F250 super duty 6.0 I’m getting pressure buildup in the coolant were blows coolant out of reservoir my radiator was bad so I installed a new one also changed the Coolant reservoir cap I’ve done the die test to make sure The gasket wasn’t blown on exhaust side I’ve done a pressure test to make sure the gasket wasn’t blown on the compression side So far that stuff has passed but my upper radiator hose gets very tight not long before it gets up to running temp. Can my oil cooler Be an issue of this also the truck has been head studed I am EGR delete it. I just want to know what else I need to do or possibly check before I pull the cab thanks in advance
Fleet Mechanic
Joined: Jul 2018
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From: Jacksonville Florida
Why are you thinking of pulling the cab? Have you checked your thermostat. What are your operating delta's? Do you have a good code reader and monitoring tool? Post your dtc's and readings if you do.
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the only code I'm throwing is a #5 glow plug. and I'm saying I want to know possibly what else to check before I pull the cab to do head gasket but something seems restricted im changing oil cooler tomorrow that's the last thing I can think of that would be causing coolant to keep getting pushed out the cap
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so I was doing some research and it was saying if the oil cooler washed/plugged causing a restriction then it can cause excessive coolant pressure and also make I spit coolant out the overflow/ cap. but im new to the 6.0 world so any advise on testing helps.
Cargo Master
Joined: Oct 2018
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From: unfortunately Germany
Did you tested your degas bottle cap?
Did you backflushed your coolant system?
Before pulling the cab, check the EGR cooler.
If you need pictures for the EGR cooler test, I can show you some...
Did you backflushed your coolant system?
Before pulling the cab, check the EGR cooler.
If you need pictures for the EGR cooler test, I can show you some...
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After the truck is at operating temperature (>186°f) get on a long flat highway and maintain speed (60mph) and after 15 minutes:
1. What are the oil and coolant temps? _________
2. What is the coolant pressure? _________
3. Now, release pressure from the degas cap and retighten, then run the truck (safely) up to speed at wide open throttle watching for a fast rise in coolant pressure. Slow your speed and repeat a run up to speed at wide open throttle observing the pressure of the coolant.
Now what is the coolant pressure and temps?
A. Pressure: _________
B. Temps: _________
As far as your oil cooler, this procedure above will help decide if there is an issue. If it is restricted enough it would slow coolant flow enough to make pressure but it should also reflect a high oil temperature.
1. What are the oil and coolant temps? _________
2. What is the coolant pressure? _________
3. Now, release pressure from the degas cap and retighten, then run the truck (safely) up to speed at wide open throttle watching for a fast rise in coolant pressure. Slow your speed and repeat a run up to speed at wide open throttle observing the pressure of the coolant.
Now what is the coolant pressure and temps?
A. Pressure: _________
B. Temps: _________
As far as your oil cooler, this procedure above will help decide if there is an issue. If it is restricted enough it would slow coolant flow enough to make pressure but it should also reflect a high oil temperature.
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Dodgehemi7
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Oct 11, 2012 10:48 PM