Rad hose collapsing

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May 13, 2006 | 08:16 PM

nptwoody

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Joined: Mar 2006

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From: East Northport NY

Rad hose collapsing

My upper hose sprung a leak yesterday and I discovered that it had a cut underneath where the fan could have nicked it. I put in a new hose and while driving today after it was warmed up I stopped and restarted the car and the upper hose collapsed causing the fan to slice another hole in the hose. I got another hose hooked it up and it too is collapsing upon shutting the car down after hitting the thermostat temp. What can cause this? thanks Jim

May 13, 2006 | 08:20 PM

SIXFOOTER

Le Mans Master

Joined: Jan 2006

Posts: 9,192

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From: Boca Raton Florida

got to have air in the system somewhere. With it full of liquid it can't colapse

May 13, 2006 | 08:29 PM

David Ey

Burning Brakes

Joined: Sep 2004

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From: Ft.Worth Texas

Did the origional hose have a spring inside?

May 13, 2006 | 08:32 PM

SIXFOOTER

Le Mans Master

Joined: Jan 2006

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From: Boca Raton Florida

the bottom hose has a spring since its on the suction side of the rad, but the top one doesn't

May 13, 2006 | 08:34 PM

David Ey

Burning Brakes

Joined: Sep 2004

Posts: 1,167

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From: Ft.Worth Texas

Oh, I see. Must be air then.

May 13, 2006 | 08:42 PM

2th farmer

Melting Slicks

Joined: Nov 2004

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From: Pineville Kentucky

CI 6-8-9 Veteran

Slowly release the cap when the hose is collapsed and see if in re-inflates. A bad cap can cause it.

May 13, 2006 | 08:48 PM

nptwoody

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From: East Northport NY

Quote:

Originally Posted by 2th farmer

Slowly release the cap when the hose is collapsed and see if in re-inflates. A bad cap can cause it.

will try your advice in the morning, if it inflates i will move on to the next suggestion and try to "burp" the rad and get the air out. thanks will let you know how it goes.

May 13, 2006 | 08:50 PM

VetteLS6

Racer

Joined: Aug 2002

Posts: 289

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From: Albuquerque NM

Quote:

Originally Posted by SIXFOOTER

got to have air in the system somewhere. With it full of liquid it can't colapse

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May 13, 2006 | 09:21 PM

jdmick

Safety Car

Joined: Oct 2004

Posts: 3,725

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From: Minnesota

Sounds to me like the little valve in the cap that allows fluid back into the radiator from the recovery tank is stuck shut. A new cap should fix the problem.