Okay Begin with 2001 S-10 Blazer 2WD 4.3L 6 Cylinder Vortec. Water pretty much pours from the water pump, best i can tell is right behind the pully. I replaced the water pump 2 years ago but now its out again...belt seems to have proper tension. I did not replace the fan clutch when I replaced the water pump, could this have caused my bearings to go out? And occasionally the engine just makes a loud clunk when I try to start it but I cranks after 3-4 clunks. Is it trying to hydra lock, or are the bearings on the pump bad enough to cause the belt not to turn. I am driving this 1.3 miles to and from work each day, gingerly. I am off sunday so planning on changing the water pump but I need to know if it is hydra locking and if so how do I fix it. And also the logical reason for the pump going out so soon? THANKS