A coolant leak from the small hole behind the lower timing cover is typically the water pump weep hole, indicating a failing water pump. Because the timing belt and water pump were reportedly replaced within the last 10,000 miles, check the parts warranty before paying for the job again. If the pump is not the source, the other possible cause in that area is a head gasket leak.
The owner of a 1993 Honda Accord reported coolant leaking from a small circular hole just inside the backside of the lower timing belt cover. The expert suspected a 2.2L four-cylinder and said the leak likely means the water pump under the timing covers is failing, recommending replacement of the timing belt at the same time and optionally the oil pump. After the owner said both the belt and water pump were supposedly replaced within 10,000 miles, the expert advised checking the parts warranty and noted a head gasket leak as the only other likely cause in that area.
