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99 Legacy Outback leaking coolant
Posted 02 June 2011 - 10:19 AM
Posted 02 June 2011 - 10:48 AM
That's a bleeding screw for your radiator. Never seen one like that.
If you can't get it to seal you'l need a new radiator.
If the rad isn't full be hesitant to drive the car.
And if you have been driving it there is probably now an air pocket that can cause significant damage through overheating the engine.
Search here for "burping procedures". CLiff notes version is remove lower rad hose and drain the coolant, reattach lower hose, fill through upper hose until it won't take any more, then fill through rad opening.
Posted 02 June 2011 - 02:29 PM
Posted 02 June 2011 - 02:30 PM
That screw should tighten enough so that no air or coolant escapes. Since it is plastic, it could be easy to crack.
If it won't tighten shut easily, remove it when the engine is cold. There should probably be a rubber O-ring there. Check that the O-ring is not torn or broken.
Before screwing it back down, put a light coat of vaseline on the O-ring and the threads,
That should take care of it unless something else is broken.
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