My 2001 sportster le. on the garden hose runs and cools fine. When i put it in the water it will not piss and starts to overheat after a few minutes at idle. Brand new jet pump housing with wear ring and new impellor. What is wrong with this thing? Why does it not pickup water? I keep hearing different storie. Should i see it pissing at idle? What could be causing this problem? Please help