What are the different types of water pumps out there?
Most water pumps are belt driven, but on some engines, the pump is driven by the timing belt. On most engines, the pump pulls coolant in through the lower radiator hose and routes it into the block and heads. On “reverse flow” systems, the pump routes the coolant into the head(s) first, and then to the block. Question: We noticed a little bit of coolant had dripped from a water pump on a 1998 Chevy engine. I’ve heard that might be normal. Should the pump be replaced? Answer: Because of the continuous load on the water pump, the seal and shaft bearings eventually wear out. The first sign of trouble may be coolant leaking from the pump shaft weep hole. More than a few drops of coolant coming out of this little vent means the seal is worn and the pump is failing. Other symptoms may include bearing noise (rumbling, chirping or growling), loss of coolant (through the leaky shaft seal), overheating (from coolant loss or separation of the impeller from its shaft), or fan wobble (if the engine
