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Author Topic: radiotar hose hard  (Read 11706 times)

Offline ChevyRay07

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radiotar hose hard
« on: February 03, 2014, 07:23:42 pm »
Top radiator hose going into the engine is hard after I run the truck. Has a rebuilt 350  and it just started doing it so I'm trying to figure what it is.
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Offline bd

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Re: radiotar hose hard
« Reply #1 on: February 03, 2014, 08:00:14 pm »
Is the engine overheating?  Is the radiator full of coolant?  Did you install a new radiator cap?
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Rich
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Offline ChevyRay07

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Re: radiotar hose hard
« Reply #2 on: February 03, 2014, 08:13:16 pm »
No it's not over heating and yeah I did put a new radiator cap cause the old one would leak antifreeze out. And it's full of antifreeze and I just changed the thermostat.
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Offline winky

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Re: radiotar hose hard
« Reply #3 on: February 03, 2014, 08:15:34 pm »
did you flush the system when you changed the thermostat?
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Offline ChevyRay07

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Re: radiotar hose hard
« Reply #4 on: February 03, 2014, 08:16:47 pm »
No I left the same thing on there cause it just started doing it today
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Offline bd

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Re: radiotar hose hard
« Reply #5 on: February 03, 2014, 08:19:06 pm »
Quote from: ChevyRay07 on February 03, 2014, 08:13:16 pm
No it's not over heating and yeah I did put a new radiator cap cause the old one would leak antifreeze out. And it's full of antifreeze and I just changed the thermostat.

Your old cap was leaking.  The new cap is maintaining cooling system pressure at ~15 lbs.  Stiffness in the hose at operating temp is normal.
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Rich
It's difficult to know just how much you don't know until you know it.
In other words... if people learn by making mistakes, by now I should know just about everything!!!
87 R10 Silverado Fleetside 355 MPFI 700R4 3.42 Locker (aka Rusty, aka Mater)

Offline ChevyRay07

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Re: radiotar hose hard
« Reply #6 on: February 03, 2014, 08:20:26 pm »
So it's fine that the pressure on the hose normal then it's working just fine?
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Offline ChevyRay07

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Re: radiotar hose hard
« Reply #7 on: February 03, 2014, 08:23:36 pm »
And the end of the hose that's on the radiator steam comes out of it is it normal the weather here is 39.
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Offline bd

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Re: radiotar hose hard
« Reply #8 on: February 03, 2014, 08:32:36 pm »
Pressure in the cooling system raises the boiling point of the coolant.  As long as the engine is not overheating, the cooling system is full and not losing coolant (you're not having to add), pressure building in the radiator means the cap is doing its job.  But, you need to explain this in a little more detail...

Quote from: ChevyRay07 on February 03, 2014, 08:23:36 pm
And the end of the hose that's on the radiator steam comes out of it is it normal the weather here is 39.

Are you referring to the 5/16" bib just below the cap that runs to the recovery tank?  What?
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Rich
It's difficult to know just how much you don't know until you know it.
In other words... if people learn by making mistakes, by now I should know just about everything!!!
87 R10 Silverado Fleetside 355 MPFI 700R4 3.42 Locker (aka Rusty, aka Mater)

Offline Captkaos

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Re: radiotar hose hard
« Reply #9 on: February 03, 2014, 08:33:24 pm »
If the hose is leaking "steam" that isn't normal.
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Offline ChevyRay07

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Re: radiotar hose hard
« Reply #10 on: February 03, 2014, 08:36:58 pm »
No the top hose that runs from radiator to motor. Where the thermostat is at.
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Offline winky

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Re: radiotar hose hard
« Reply #11 on: February 03, 2014, 08:46:27 pm »
it shouldn't have steam coming out. i would suggest letting the engine cool. then removing the radiator cap and cranking it and then check the coolant level with it running to make sure its full and there isn't any air in it. nothing should come from that hose, you might want to check it around the thermostat housing make sure the hose isn't brittle of squishy (like a water balloon) also check your clamp you may need a new one or its possible you could have over tightened it and pinched a hole in it.
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Offline winky

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Re: radiotar hose hard
« Reply #12 on: February 03, 2014, 08:47:36 pm »
sounds lke you have your heater core by passed?
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Offline winky

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Re: radiotar hose hard
« Reply #13 on: February 03, 2014, 08:52:57 pm »
IM about to upload some pics of the radiator to help id

edit:
this is how ive always seen the hoses ran
1. goes to over flow tank
2. heater core (un less by passed) if heater core is by passed it goes the the intake left of the thermostat housing #1 in next pic
3. transmission lines
4. water pump.
on the driver side there is only one hose that goes to the thermostat housing #2 in next pic






« Last Edit: February 03, 2014, 09:10:49 pm by winky »
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Offline ChevyRay07

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Re: radiotar hose hard
« Reply #14 on: February 03, 2014, 09:00:10 pm »
Ok. What's a heater core bypass.  I did cranked it up and it was full while it was on.
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