New impeller, still won't pump.

[Bob1944]

1963 Evinrude 40 HP Electric Shift

I've rebuilt this old baby that I picked up on a farm leaning agaisnt a windmill a year ago. (I wasn't leaning, the engine was). She, or he as the case may be, is refreshed inside and out and has a new coat of paint and looks like it just came off the assembly line.

I put it in a barrel of water and fired it up yesterday. It runs smooth and powerful as a rutting buck. But, even though it has a new impeller and the lower end is all clean inside, it does not pump water. What a drag eh?

Any ideas. I am sure the impeller is installed correctly

 

[tashasdaddy]

Re: New impeller, still won't pump.

in a barrel it has to be submerge 1/2 up the leg, also you are only going to get a mist or droplets out the exhausts relief ports on the leg. that is it's only tale tell.

 

[lindy46]

Re: New impeller, still won't pump.

Make sure you let it run long enough for the thermostat to open. Then check temp of cylinder head - you should be able to touch for a few seconds without burning your fingers. Or sprinkle a little water on the head - it should not sizzle. Did you check the thermostat? Make sure it opens at 140-150 degrees.