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Old 05-08-2013, 07:36 PM   #1
bravados
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Default Top Radiator Hose

Well after a run this weekend i noticed steam from my engine bay. Popped the bonnet and the top radiator hose had come off the radiator connection. Waited for it to cool, replaced coolant and put together and tightened the clip.

Went for another run and popped bonnet to check and noticed air bubbles comming from the connection and a slight drip/leak.

Question is, do we feel this is still just a loose connection and needs tightening further? Should there be some sealent in the connection?

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Old 05-08-2013, 08:22 PM   #2
jnb5101
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the hose is probably damaged internally. make sure that bubba hasn't damaged the radiator nipple in some past attempt to remove an old hose. some guys like to use razor knives to slit a hose. no sealants are used on the hoses.
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Old 05-08-2013, 09:08 PM   #3
mds3013
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When this has been covered in the past the problem has been an incorrect size I.D. on the hose. No amount of tightening or replacing the clamps would stop it. The hose should fit very snug onto the radiator neck. mike...



http://forums.corvetteforum.com/c3-t...ing-off-4.html

Last edited by mds3013; 05-08-2013 at 09:19 PM.
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Old 05-08-2013, 09:10 PM   #4
calwldlife
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I have smeared red RTV on the pitted neck to
seal the hose.
no issues.
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Old 05-08-2013, 10:06 PM   #5
gcusmano74
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That will work. The trick is not to use too much. The extra sealant can get loose and clog a few radiator tubes.
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Old 05-09-2013, 03:56 AM   #6
bravados
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Guess a new top hose would be an idea then see how it goes.

Out of interest where is this radiator nipple and what does it do?

Thanks all
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Old 05-09-2013, 05:08 AM   #7
Bagmup
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I think he means the top outlet on the radiator.
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Old 05-09-2013, 10:23 AM   #8
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Since you used the term "bonnet" you will have to define what you are calling a radiator nipple.

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Old 05-09-2013, 04:29 PM   #9
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I think MDS3013 has the right diagnosis. Recently I bought a new upper hose for my '78 L82. Inner diameter on the engine end was too big so back to the store to exchange it for the right one. It should fit snug when putting on.
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