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04-22-2008, 02:32 AM
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#1 |
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Registered User
 
Join Date: Aug 2007
Location: Sandy, Oregon
Posts: 1,551
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Upper rad hose ?
I just noticed when I was washing my engine compartment off that my upper radiator hose was flat, no cooling problems, tank full, overflow full, when I took the cap off the hose retook its previous form, a bit flatter. I noticed that alot of our trucks had a solid almost pipe in place of a hose, can I find one of thodse or does anyone have a suggestion for a solution?
Thanks
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Scotts72C10 |
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04-22-2008, 02:56 AM
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#2 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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Re: Upper rad hose ?
the pipe is supposed to be on 4X4 trucks, the 2 wheel drives never had them *as original*.
This really isn't an issue. once you fire it up and it builds pressure, it'll inflate. If it bugs you, then I guess a new hose would be the answer. |
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04-22-2008, 03:01 AM
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#3 |
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Registered User
Join Date: Aug 2007
Location: Sandy, Oregon
Posts: 1,551
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Re: Upper rad hose ?
Well there you have it, doesent bug me with the hood closed, I`ll just keep it that way.
Thanks
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Scotts72C10 |
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04-22-2008, 03:46 AM
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#4 |
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Registered User
Join Date: Apr 2008
Location: auburn,al.
Posts: 32
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Re: Upper rad hose ?
you can put a wire coil inside to keep it round.
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04-22-2008, 03:59 AM
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#5 |
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Active Member
Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
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Re: Upper rad hose ?
I wouldn't just forget about it, though... If it flattens out too much, it may be time to replace it. There's a lot of pressure in a hot radiator for a weak hose and could leave you stranded.
I've never noticed it on either of my trucks but I have replaced the hoses a couple of time since I had them. |
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04-22-2008, 06:24 AM
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#6 |
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Registered User
Join Date: Aug 2007
Location: Sandy, Oregon
Posts: 1,551
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Re: Upper rad hose ?
I`ll change out the cap and hose tomorrow, I was just kidding about not lifting the hood.
Thanks all, great info
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Scotts72C10 |
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04-22-2008, 03:55 AM
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#7 |
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Senior Member
Join Date: Jul 2004
Location: Estherville, Iowa
Posts: 3,371
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Re: Upper rad hose ?
Your radiator cap is not working right or is not vented. There should be a little round valve in the center of the cap that will let air back into the system when it cools down, preventing the vacumn that sucks the hose shut.
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1968 C10 307 3spd Long Fleet ------ http://67-72chevytrucks.com/vboard/s...d.php?t=201103 1970 C10 305 Super T10 Long Fleet --- http://67-72chevytrucks.com/vboard/s...d.php?t=202285 1971 C20 383 TH350 Dana Posi ----- http://67-72chevytrucks.com/vboard/s...d.php?t=206894 2001 GMC Sierra 1500 C3 6.0 |
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04-22-2008, 06:28 AM
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#8 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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Re: Upper rad hose ?
if it has the original style cap, it'll let pressure out, but not back in.
The spring is a band aid fix. It is intended for the lower hose where it is under a partial vacume condition when ever the engine is running. I've seen this before, and it bothered me on one of my trucks, but being lazy and cheap, i let it go for about 3 years with no issues. I was advised that it was normal back in the day. |
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