cadh1
Cadet
- Joined
- Jul 8, 2008
- Messages
- 14
Re: Thermostat housing bolts seized...THERE'S MORE
...The reason for changing the thermostat to begin with was to address the overheat alarm being triggered. Upon using the motor with the new thermostat the same problem exists. At low speed the tell tale looks good, but, at WOT the tell tale stream actually gets smaller. So far I have checked the season old water pump impeller (still like new good vanes etc.), the housing was/is seated well, the metal cylinder/sleeve inside the pump housing has the top tab and does not spin, and the key is good. The water intake vents are clear in the lower unit. I pulled the new thermostat, and used a hose to flush the block. The upper hole of the thermostat opening flushed through the lower unit tube nicely (lower unit removed). The bottom section inside the thermostat opening backed up and only dribbled through the tell tale at full pressure. I'm not sure if this is correct or the overall problem. I tried the motor on the water again after flushing, and the alarm sounded. .....Once again, ANY help would be appreciated.
...The reason for changing the thermostat to begin with was to address the overheat alarm being triggered. Upon using the motor with the new thermostat the same problem exists. At low speed the tell tale looks good, but, at WOT the tell tale stream actually gets smaller. So far I have checked the season old water pump impeller (still like new good vanes etc.), the housing was/is seated well, the metal cylinder/sleeve inside the pump housing has the top tab and does not spin, and the key is good. The water intake vents are clear in the lower unit. I pulled the new thermostat, and used a hose to flush the block. The upper hole of the thermostat opening flushed through the lower unit tube nicely (lower unit removed). The bottom section inside the thermostat opening backed up and only dribbled through the tell tale at full pressure. I'm not sure if this is correct or the overall problem. I tried the motor on the water again after flushing, and the alarm sounded. .....Once again, ANY help would be appreciated.