From what you described I suspect you have a hole in a freeze plug. They tend to rust out over the years, especially if you’re running a high percentage water and a low percentage antifreeze for your coolant. Try to fill your radiator when the engine is cold. If you have a hole in a freeze plug you won't be able to keep the radiator full. The water will just keep running out the hole. If you can fill the radiator and don't see any leaks, it's probably not a freeze plug. It may be a sliced hose that will only leak when the engine is warm. If you do have a leak, try to look under the car and see where the water is coming from. Freeze plugs look like round shallow indentation in the engine block. They're usually about 1.5 inches in diameter. If you find a leaking freeze plug you can usually pop it out by driving a large screwdriver into the hole and then use the screw driver to pry the metal freeze plug out. Buy a new freeze plug of the same size at an auto parts store and tap it back into the circular opening. Do your best to clean the edges of the opening first. Put one end of a deep well socket that's slightly smaller than the freeze plug against the outer wall of the freeze plug and tap on the other end of the socket with a hammer to drive the plug into the opening in the engine block. This will help you to drive it in straight. If there's enough room to swing a hammer, freeze plugs usually aren't too difficult to replace. However, if there's no working room they can be very difficult to replace. If this is the case you may want to take it to a garage.
Jun 17, 2009 |
1997 Oldsmobile Achieva