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Hose Leaking
#1
Christine's been sitting for about 3 weeks and today I look under her a see a leak that's new. Upon further research it appears to be leaking from a hose.

If you look at the picture it's the hose on the right side just south of the screw clamp and under the nipple. I can even turn the hose a little, so it's not secured properly. There's also a metal cylinder attached to it on the underside.

Any idea of what hose this is as it doesn't look to complicated to change. One end is mounted into the firewall and the other end is just left of the thermostat housing.



   

[/url][Image: mbpsrsig3_zps456db2cb.png]

[url=http://s165.photobucket.com/user/MPBsr25/media/mbpsrsig3_zps456db2cb.png.html]
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#2
Heater hose that carries hot coolant water to heater core inside the car. The silver piece is the flapper valve that allows the coolant to flow into the car when you turn the heater on. It is vacuum operated and that is the hose coming from it.

-john
(jbojo)
351C 4V cc heads, 10.5 : 1 CR, 290 Herbert cam, Flat top forged pistons, forged connecting rods, Atomic efi,
C6 with Gear Vendor overdrive, 3.89 Tru Trac, Hooker Super Comp with 2 1/2" Pypes Exhaust.        

Some Mod pictures can be seen at:

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#3
jbojo;248835 Wrote:Heater hose that carries hot coolant water to heater core inside the car. The silver piece is the flapper valve that allows the coolant to flow into the car when you turn the heater on. It is vacuum operated and that is the hose coming from it.

So I guess I can't run one full piece of hose, but need to split it as shown?

[/url][Image: mbpsrsig3_zps456db2cb.png]

[url=http://s165.photobucket.com/user/MPBsr25/media/mbpsrsig3_zps456db2cb.png.html]
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#4
IF you take out that valve the heater will always be on. Use a screw type clamp if you don't care about originality. Also are you sure you are using the correct diameter hose?

-john
(jbojo)
351C 4V cc heads, 10.5 : 1 CR, 290 Herbert cam, Flat top forged pistons, forged connecting rods, Atomic efi,
C6 with Gear Vendor overdrive, 3.89 Tru Trac, Hooker Super Comp with 2 1/2" Pypes Exhaust.        

Some Mod pictures can be seen at:

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#5
Try to tighten the clamp to see if the leak stops.
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#6
jbojo;248838 Wrote:IF you take out that valve the heater will always be on. Use a screw type clamp if you don't care about originality. Also are you sure you are using the correct diameter hose?

Not big on originality, but not sure if the hose is leaking where the existant clamp is located. Will need to look the hose area over a little closer.

[/url][Image: mbpsrsig3_zps456db2cb.png]

[url=http://s165.photobucket.com/user/MPBsr25/media/mbpsrsig3_zps456db2cb.png.html]
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#7
you can just replace it.

it is possible the plastic part of the valve is cracked and you are getting a leak.

or it could be loose fittings.

http://www.ebay.com/itm/66-67-68-69-70-7...6w&vxp=mtr


if you just jump the valve the heater will be on all the time, and you want to make sure you cap off the hose to the control valve to prevent a vacuum leak.

me i would replace the valve if tightening the hoses doesn't work.
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#8
72HCODE;248848 Wrote:you can just replace it.

it is possible the plastic part of the valve is cracked and you are getting a leak.

or it could be loose fittings.

http://www.ebay.com/itm/66-67-68-69-70-7...6w&vxp=mtr


if you just jump the valve the heater will be on all the time, and you want to make sure you cap off the hose to the control valve to prevent a vacuum leak.

me i would replace the valve if tightening the hoses doesn't work.

From what I can see, there's only one clamp on one of the ends of the hose for the heater control valve. Shouldn't there be a clamp on both ends?

As per pic I can twist the lower end of the hose and it moves. That's why I feel it's missing a clamp.

[/url][Image: mbpsrsig3_zps456db2cb.png]

[url=http://s165.photobucket.com/user/MPBsr25/media/mbpsrsig3_zps456db2cb.png.html]
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#9
You are for sure missing a clamp. Amazing it has not blown off and got antifreeze everywhere. You can open a new clamp all the way and put around the hose instead of pulling it off to install the clamp. It is usually 5/8" heater hose clamp.
David


When a man is in the woods and talks and no women are there is he still wrong??
Tongue
David
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#10
+1
Should be a 5 min fix.

-john
(jbojo)
351C 4V cc heads, 10.5 : 1 CR, 290 Herbert cam, Flat top forged pistons, forged connecting rods, Atomic efi,
C6 with Gear Vendor overdrive, 3.89 Tru Trac, Hooker Super Comp with 2 1/2" Pypes Exhaust.        

Some Mod pictures can be seen at:

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