After I replaced the water pump impeller in my outboard I fired up the motor and now its not pumping any water through the pee-hole at all and also the prop is spinning in the neutral position (motor seems as if it is in gear and trying to move). Would this be because of the shift rod or the drive shaft not being in the proper position and possibly the impeller is being span the wrong in the impeller housing cup?
i am no expert on outboards. i did put an impeller on one with the same problem. no water output. seems there was a tube, that ran from the pump to the cylinder head. it was cracked, and the water couldnt reach the cylinder head. seems that the impeller shaft should always turn in the right direction, or it wouldnt cool in reverse, if you got this far , i am sure you will figure it out. you must be a pretty good mechanic to get that far,,
I had that problem once and the tube going to the pee-hole was blocked, the next time higher revs caused enough pressure to unblock it. With the motor NOT running, put it in forward, then neutral, or reverse then neutral. If the prop is locked, it's still in gear. If it was OK before the work, you probably need to re-adjust the linkage. The drive shaft from the motor only turns one way and so does the impeller. The prop shaft has a clutch dog that controls F-N-R through linkage adjustment. Good luck
First the impeller -- did you find all of the old one, or are a couple of vanes missing? When you disassemble to put on a new impeller, you must account for all of the old one -- pieces like to be pushed by water into the cooling passages. I like a thin stiff springy wire to run through the pee-hole and up into toe water pickup tube. If you can blow air through the tubes, they aren't blocked. Did you put the impeller on upside down? It only works one way -- as it spins, the outer ends of the vanes should follow the vane, not lead it. When you reassemble, you must get the gear set aligned properly -- When it's assembled properly, the prop will be locked in forward and reverse but will freewheel in neutral. You must turn the blade so the flat of the clutch dog faces up, with the shifter in neutral, as you assemble it. Try it a couple times, you'll figure it out.
