I cant get water to flow though the motor It seems like the pump isnt working any advise!
Since you've done all the normal fixes already i think you should look at the possibility that your cam shaft is worn or the lifters. I'm not sure if an evinrude 20hp engine has lifters but i've had this same problem a few years back when chevy put cheap cams in some of their vehicles. The lobes on the cam were rounding off instead of being a teardrop shape and the vehicles would start and idle fine but would pop like mad on acceleration. Hope this helps!
You should never ever start your engine without water to cool the impeller or it will burn the impeller vanes in the first place. As described, you have to split the lower from the upper case, there you find the pump, replace the impeller in side of it, get a manual first for the rebuild. And hope that the vanes are still there or you gonna have to find the pieces that came loose and entered the engines cooling circuit and clogged it up. Good luck!
Put the boat in forward, drop lower leg if pump is worn replace, be sure to pack it in petroleum jelly so it will not dry start.
