Installed new water pump kit and water leaving the motor is spitting or spraying out and gets very hot after a few minutes. Same trouble before I replaced the pump. Removed the thermostat and water really gushes out of the head. I'm thinking the exhaust housing may be clogged and is preventing proper circulation of water. Before I tear into the motor I'd appreciate any info to get me headed in the right direction if I'm not already. Thanks in advance!