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  1. 7

    How much water?

    It is simple. That's what bothers me. When I rebuilt the pump I replaced the grommet in the discharge. I believe the pump is working fine. I have the foot off now as I wanted to back flush through the thermostat hole into leg to make sure that passage was clear. See image. That passage seems...
  2. 7

    How much water?

    Head to the lake, run it and hope for the best or...?
  3. 7

    How much water?

    Well crap! After reading these post I decided to let the motor run in the trash can tank for a little while and see how hot she hot. She got hot! I shut it off after a couple minutes. It was way to hot to touch for any length of time and a meat thermometer, all I had, was reading 160. So, I...
  4. 7

    How much water?

    Ok. This morning it occurred to me I could use the kitchen trash can as a tank that would completely immerse the impeller, see image. I removed the thermostat cover and thermostat, filled the can, cranked her up,, and.... WATER ERUPTED OUT OF THE THERMOSTAT HOLE! Granted it sprayed out of the...
  5. 7

    How much water?

    Thanks all for your help. I'll report back.
  6. 7

    How much water?

    That looks very familiar OldOMC31. I will take everyone's advice and take it to the river mounted on a 14' Jon Boat, since I don't have a deep enough tank. I'm a retired science teacher and very suspicious but I know enough to know "it don't have to make sense to me." Maybe the pump does need to...
  7. 7

    How much water?

    Don't have a tank that deep/tall. Not sure it even sits that low when the boat is sitting in the water.
  8. 7

    How much water?

    Tried muffs at full hose pressure, 60psi. Same thing. Nothing making it to the thermostat.
  9. 7

    How much water?

    I agree something is wrong. If a properly functioning impeller would pump hard enough to blow water out of an open thermostat cover, no thermostat, and there a no clogging between the pump and thermostat, it would have to be a problem with the pump, impeller. Since the motor runs smooth and the...
  10. 7

    How much water?

    Keeper seems the most likely? Six inches above the impeller? My test tub has the water level right where the foot separates from the leg, approximately 4 1/2" above the pick up but below the impeller. How would the motor keep itself cool running at full speed on a boat when the water would be...
  11. 7

    How much water?

    I'm putting a 1973 Johnson 25hp outboard back into service after many years. I have replaced or rebuilt just about everything, and it runs great in a tank. There is a good bit of water coming out of the top snout with the exhaust, but I only run it for short periods because I'm not sure my water...
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