| New Heater Hose Leaks [message #205451] |
Sun, 21 April 2013 20:05  |
George Zhookoff
Messages: 398
Registered: December 2004
Location: Snellville, GA
Karma: 6
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Okay, basic auto repair question. Replaced engine to house water heater hoses. While doing that I replaced the thermostat. Upper radiator hose and 3/4" by pass hose leaked after the coach sits for a while and I can't get them to stop. New hoses and new clamps that are very tight. What's the problem?
George "looking for help" Zhookoff
78 EL II
Atlanta
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| Re: New Heater Hose Leaks [message #205452 is a reply to message #205451] |
Sun, 21 April 2013 20:13  |
tphipps
Messages: 3005
Registered: August 2004
Location: Spanish Fort, AL
Karma: 9
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George, are you sure that the hoses are good their entire length. I had a mysterious leak in heater hose that only showed up under pressure. Turned out the hose had a hidden cut that only opened under pressure. Devil of a time finding that one.
Perhaps a bad thermostat housing, either out of round or a partial crush? Are both hoses leaking? Distorted hose or cut from hose clamp? Many fun and frustrating places to check.
Tom, MS II
Eight days to Bean Station
2012 Phoenix Cruiser model 2552
KA4CSG
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| Re: New Heater Hose Leaks [message #205453 is a reply to message #205451] |
Sun, 21 April 2013 20:20 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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Where it the hose leaking? Obviously at the end, but is it hose to fitting OR is hose defective and liner layer is leaking to weave layer. It will then wick out the fiber at the ends and you can't tighten your way out of it. Is the stat leak at stat to engine or hose to neck? Could be non parallel or wrong/ pinched gasket or the hose
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: New Heater Hose Leaks [message #205497 is a reply to message #205451] |
Mon, 22 April 2013 08:43 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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| George Zhookoff wrote on Sun, 21 April 2013 21:05 |
Okay, basic auto repair question. Replaced engine to house water heater hoses. While doing that I replaced the thermostat. Upper radiator hose and 3/4" by pass hose leaked after the coach sits for a while and I can't get them to stop. New hoses and new clamps that are very tight. What's the problem?
George "looking for help" Zhookoff
78 EL II
Atlanta
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George,
I go along with the others that have said it is probably the casting itself that is leaking. They develop porosity with age. If mine should start doing that, it would the third or forth pot-metal thermostat housing that I replaced for just that reason.
This can be a bear to find. One only "leaked" when hot and when it did, there was no visible leak, just coolant appearing on the outside of the casting.
The replacement part for one engine was available, but more than I could afford at the time, so I cleaned it very carefully and coated the entire internal surface with epoxy and sold the car.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: New Heater Hose Leaks [message #205532 is a reply to message #205528] |
Mon, 22 April 2013 16:00 |
C Boyd
Messages: 2629
Registered: April 2006
Karma: 18
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Your right, chrome don`t get you home, but when you got chrome... who wants to go home!
The chrome ones I have seen have a short nipple and require a bent hose or trying to bend one which don`t work so good. The stock ones have the bend in them and use a straight piece of hose. I have looked in about everstuff I got and cannot find spec on the bypass hose? Any chance it could be a 5/8 instead of 3/4??
If you are in a bind, 3M weatherstripping adhesive will stop it from leaking. Like forever.
| George Zhookoff wrote on Mon, 22 April 2013 16:45 |
"
I go along with the others that have said it is probably the casting itself that is leaking. They develop porosity with age. If mine should start doing that, it would the third or forth pot-metal thermostat housing that I replaced for just that reason."
Thanks all! I'll get the new housing and see how it goes. The housing looked a little worn for the wear.
Thanks again,
George "but chrome would have looked so nice" Zhookoff
1978 EL II
Atlanta
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C. Boyd
76 Crestmont
East Tennessee
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| Re: New Heater Hose Leaks [message #205549 is a reply to message #205532] |
Mon, 22 April 2013 20:04 |
gbarrow2
Messages: 765
Registered: February 2004
Location: Lake Almanor, Ca./ Red Bl...
Karma: 3
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Chuck,
As always, sound advice and simple solution. Must be the biker in ya.
Gene Barrow
Lake Almanor, Ca.
1976 Palm Beach
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| Re: New Heater Hose Leaks [message #205590 is a reply to message #205451] |
Tue, 23 April 2013 02:12 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Keep in mind that the bolts that hold the thermostat housing to the intake manifold go all the way through the top of the intake manifold into coolant area. I have seen one leak up the threads of those bolts. A little gasket sealer or teflon on the threads will fix that if it is your problem.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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