I am thinking of buying a house with a concrete block basement built in 1954. I noticed a horizontal crack running the length of the basements front wall, and another one on the back wall. The cracks are in the mortor joint, about at the frost line level. There does not appear to be any bowing, or flaking of the wall at all. The condition report filled out by the seller stated that "after heavy rains water sometimes gets into the basement" I looked at the house after two days of on and off heavy rains and didn't find any water, or signs of water lines on the walls. Someone told me that the crack in the wall is very common for a house this age. It is one thing if it is common, I just don't want to end up buying a money pit!!! If the house inspector says it looks ok I am going to buy the house. Is there anything I can do to repair the crack in the mortar from the inside of the basement?