Water Hammer
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Cross-Country
Joined: Feb 2003
Posts: 63
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Water Hammer
This is a first for me,1991 Explorer XLT, I'm Getting water hammer in the cooling system.
If the engine is cold and I run 2 or 3 miles and then shut it down I get a recurring thump from the heater area under the dash if I restart the engine it stops, if the temp is right up it doesn't do it and now my rad is weeping about a pint of coolant a day around the tank edge (fill side)
has anyone had this problem and whats the fix?
Thanks
If the engine is cold and I run 2 or 3 miles and then shut it down I get a recurring thump from the heater area under the dash if I restart the engine it stops, if the temp is right up it doesn't do it and now my rad is weeping about a pint of coolant a day around the tank edge (fill side)
has anyone had this problem and whats the fix?
Thanks
"Mifflin Clay"
Joined: Jul 2005
Posts: 3,177
Likes: 4
From: Mifflin, PA
Just a wild guess - you might have a head gasket leak, just enough to get combustion gasses in the cooling system, building up pressure...... Try taking the radiator cap off when cold, start it, and watch for bubbles in the fluid. Let it warm to operating temp.
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Cross-Country
Joined: Feb 2003
Posts: 63
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Thanks but I've redone the heads had them checked (magnafluxed and pressure tested) and put new headgaskets in myself (so I know they are right) I didn't have a problem till I replaced the rad. And it hasn't gotten anywhere near overheated since I've done the headwork.
Headwork done a year ago, Rad replaced 2months ago.
Headwork done a year ago, Rad replaced 2months ago.
Last edited by B. Abel; Nov 12, 2005 at 07:14 PM.
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