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#4380608 - 04/16/17 01:51 AM Leak from new radiator hose and new clamp
garyfishell Offline


Registered: 04/15/17
Posts: 7
Loc: USA
Hi so I have a leak on a 2002 Ford Mustang V6 from the lower radiator hose specifically around the radiator clam and I can't figure out what's wrong. Whenever I tighten the clamp it stops the dripping so maybe that has something to do with it but I'm not sure.

The clamp is a screw clamp so not the stock one and it seems to leak all the time but again I'm not too sure.

Any help would be great, thanks!

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#4380613 - 04/16/17 01:58 AM Re: Leak from new radiator hose and new clamp [Re: garyfishell]
andyd Offline


Registered: 09/25/04
Posts: 7139
Loc: Marshfield , MA
Buy a tube of Permatex Aviation Forma Gasket. Use a new clamp.
_________________________
'16 Camry LE STP synth 0w20 and STP filter. the Fridge

1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline HM 0w20 and OEM filter
Thick oil is better grin2

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#4380615 - 04/16/17 02:03 AM Re: Leak from new radiator hose and new clamp [Re: garyfishell]
Colt45ws Offline


Registered: 08/15/06
Posts: 9637
Loc: Central Washington
Ive had bad luck with screw clamps.
If you keep tightening the screw clamp be aware you can crack the plastic radiator. It might be worthwhile to check and make sure you didnt do just that.
Then while you have it open, and if its okay, slip on a gates powergrip clamp. They work like heatshrink tubing; you heat it to shrink it around the hose. When the car heats up they will adjust to the hose.
Measure the diameter of your hose and order the correct size.
http://www.gates.com/products/automotive...ing-chart-decal
_________________________
-Colton
2002 Ford Crown Vic PI 207k, Ex-Kootenai County, ID Unit #42
Down for engine swap
2003 Ford Crown Vic PI 75k
Castrol EDGE HM 5W30, Fram XG2

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#4380617 - 04/16/17 02:07 AM Re: Leak from new radiator hose and new clamp [Re: garyfishell]
Merkava_4 Offline


Registered: 01/30/07
Posts: 17501
Loc: Clovis, CA
Originally Posted By: garyfishell
The clamp is a screw clamp so not the stock one


That's your problem right there.

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#4380638 - 04/16/17 04:40 AM Re: Leak from new radiator hose and new clamp [Re: garyfishell]
BigD1 Offline


Registered: 08/12/15
Posts: 2575
Loc: NC
Had a few over the years that would not seal with the screw clamps. I just bought another screw clamp, and installed it 180 degrees, so I had two clamps on one hose. Drip or seep fixed.
_________________________
1992 Toyota Pickup--Havoline HM 10W-30--Motorcraft FL-910S

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#4380694 - 04/16/17 07:00 AM Re: Leak from new radiator hose and new clamp [Re: garyfishell]
eljefino Offline


Registered: 06/15/03
Posts: 32632
Loc: ME
Your hose is tired and compressed. A new hose could help.

But as said above I'd just smear RTV all over the rad nipple then reinstall the old hose and a new quality clamp.

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#4380701 - 04/16/17 07:23 AM Re: Leak from new radiator hose and new clamp [Re: eljefino]
Kruse Offline


Registered: 10/05/05
Posts: 4294
Loc: Kansas
Originally Posted By: eljefino
Your hose is tired and compressed. A new hose could help.


Did you read the subject line?

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#4380867 - 04/16/17 10:47 AM Re: Leak from new radiator hose and new clamp [Re: BigD1]
HerrStig Offline


Registered: 08/24/11
Posts: 9560
Loc: Boston, MA
Originally Posted By: BigD1
Had a few over the years that would not seal with the screw clamps. I just bought another screw clamp, and installed it 180 degrees, so I had two clamps on one hose. Drip or seep fixed.
^ works for me.

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#4380891 - 04/16/17 11:29 AM Re: Leak from new radiator hose and new clamp [Re: garyfishell]
SHOZ Offline


Registered: 06/28/03
Posts: 5744
Loc: Illinois
This stuff works great for leaky hoses.

Permatex 85420 Permashield Fuel Resistant Gasket Dressing & Sealant, 2 oz Tube

https://www.amazon.com/Permatex-85420-Pe...esistant+Gasket
_________________________
2008 Hyundai Accent 1.6L 5 sp manual hatchback
2010 Hyundai Genesis Coupe Track 2L Turbo 6sp manual

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#4380933 - 04/16/17 12:33 PM Re: Leak from new radiator hose and new clamp [Re: garyfishell]
Drew99GT Offline


Registered: 10/11/02
Posts: 22125
Loc: Colorado Springs
What colt said; if you keep tightening a screw clamp, it will cut into the hose. You may need to get a new hose and use a factory style spring clamp, or get one like this from Napa:

https://www.napaonline.com/en/p/SME187208000S

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#4380938 - 04/16/17 12:41 PM Re: Leak from new radiator hose and new clamp [Re: garyfishell]
Kool1 Offline


Registered: 01/25/13
Posts: 906
Loc: California
I have an 03 CRV with 200,000 miles. I've removed the factory hose clamps from the radiator numerous times and they are out of shape from my manhandling of them over the years. I replaced them with worm drive clamps and had leaks despite tightening and retightening them. I finally bit the bullet and bought these.

http://www.oreillyauto.com/site/c/detail...word=hose+clamp

I torqued them down with a torque wrench and never had another leak. I've had these constant tension clamps on for a about year and am very happy with the no leak results.

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#4381007 - 04/16/17 02:58 PM Re: Leak from new radiator hose and new clamp [Re: garyfishell]
Trav Offline


Registered: 11/20/06
Posts: 18856
Loc: MA, Mittelfranken.de
If you can wait a week or so there may be a free sample coming for Hylomar for Bitog members, that will cure the leak better than any other product you can buy and together with a constant tension clamp like the one kool1 posted it will be permanent and removable. Stay tuned.
_________________________
ASE L1, Master. Deutsch Meisterbrief.

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#4382164 - 04/18/17 04:26 AM Re: Leak from new radiator hose and new clamp [Re: garyfishell]
Lubener Offline


Registered: 01/22/11
Posts: 2576
Loc: N.Ohio
If the hose is old, change it. I never had a leak issue using worm screw clamps.
_________________________
The "thinking" man's friend.

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#4432431 - 06/15/17 03:03 PM Re: Leak from new radiator hose and new clamp [Re: garyfishell]
mightymousetech Offline


Registered: 04/03/17
Posts: 1444
Loc: Ontario, Canada
Using a gear clamp on a coolant hose will always leak eventually. As the hose heats up and expands, a gear clamp will not expand with it making it tighter, pinching the hose. Then as it cools it will loosen off again Repeat this a couple hundred times and it will leak for sure. This is why OEM use some kind of spring tension clamp, like a corbin. If a gear clamp has been used, recommend replacing the hose and using a proper clamp.
_________________________
Mighty Mouse Tech
Acura Tech
2010 Civic Si Castrol 0W40, Redline MTL
2013 BMW 135i M Sport Edition Castrol 0W40, Redline MTL

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#4434447 - 06/17/17 04:54 PM Re: Leak from new radiator hose and new clamp [Re: garyfishell]
Trav Offline


Registered: 11/20/06
Posts: 18856
Loc: MA, Mittelfranken.de
Get a clamp like this one..

https://www.amazon.com/Breeze-Constant-S...sion+Hose+Clamp

And a tube of this..

https://www.amazon.com/Hylomar-172-148-U...ds=hylomar+blue

Remove the hose and wipe the nipple clean then smear a thin film of Hylomar on the nipple the push the hose on and tighten the clamp. It will never leak again guaranteed.
The nice thing with Hylomar is it does not make removing the hose in the future difficult. You will not use the whole tube but don't worry once you use this stuff you will never be without it and it wont go off in the tube like RTV and end up in the trash.
_________________________
ASE L1, Master. Deutsch Meisterbrief.

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