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Where is the radiator cap?

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Old Feb 22, 2015 | 08:06 PM
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Where is the radiator cap?

05 F350, 5.4L.

I was under the hood today just checking fluids and I noticed that it didn't seem to have a radiator cap (I mean on the radiator itself, not the reservoir). Do these trucks not have a cap on the radiator? Or did I just not see it?
 
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Old Feb 23, 2015 | 08:49 AM
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I think you are just not seeing it. Follow the top of the radiator to the ends.
 
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Old Feb 23, 2015 | 10:26 AM
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RADIATOR CAP

NO cap on the radiator---only on the plastic tank.
 
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Old Feb 23, 2015 | 11:36 AM
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Cap is on the degass bottle.(the coolant reservoir) Ford eliminated the radiator mounted caps.
 
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Old Feb 23, 2015 | 05:44 PM
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So then the only cap is on the reservoir? I don't think I've ever seen a vehicle before this that didn't have a cap on the radiator AND the reservoir.

But maybe I'm just used to my old trucks.
 
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Old Feb 23, 2015 | 06:12 PM
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There should be a cap there somewhere. Look at the radiator hose. I can only imagine how long it would take to fill the radiator after a coolant change without one.
 
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Old Feb 23, 2015 | 06:25 PM
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Originally Posted by 6.2 V8 power
There should be a cap there somewhere. Look at the radiator hose. I can only imagine how long it would take to fill the radiator after a coolant change without one.
No cap here, only a reservoir cap.

 
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Old Feb 23, 2015 | 07:33 PM
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Originally Posted by r2millers
No cap here, only a reservoir cap.


op's is a 5.4 gas motor.
 
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Old Feb 23, 2015 | 07:41 PM
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6.2 gas motor, no cap on radiator
 
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Old Feb 23, 2015 | 09:15 PM
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Originally Posted by Fastback460
So then the only cap is on the reservoir? I don't think I've ever seen a vehicle before this that didn't have a cap on the radiator AND the reservoir.

But maybe I'm just used to my old trucks.
Yes. Ford did away with a cap on the radiator.
 
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Old Feb 23, 2015 | 09:58 PM
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It is important to have that cap pressure tested too. When they stop holding pressure, the cooling system wont work properly.
 
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Old Feb 23, 2015 | 11:14 PM
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The caps are cheap enough to just replace.
 
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Old Feb 24, 2015 | 03:54 PM
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So If I ever need to run a pressure test on the coolant system can I hook the tester up to the cap on the reservoir?
 
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Old Feb 24, 2015 | 07:55 PM
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Originally Posted by Fastback460
So If I ever need to run a pressure test on the coolant system can I hook the tester up to the cap on the reservoir?
Yes. The degas bottle gets pressurized along with the rest of the system. If memory serves me right the stock cap is 16psi. You can hose flush the coolant system from the degas bottle as well. I made an attachment out of an old degas bottle cap which I hook the water hose up to so I can flush the cooling system.
 
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Old Feb 24, 2015 | 08:36 PM
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Originally Posted by dkf
Yes. The degas bottle gets pressurized along with the rest of the system. If memory serves me right the stock cap is 16psi. You can hose flush the coolant system from the degas bottle as well. I made an attachment out of an old degas bottle cap which I hook the water hose up to so I can flush the cooling system.
Thanks man, And I really like that idea with the water hose.
 
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