Evinrude is not peeing... at a loss!

[NealLauderman]

I like doing things on my own and typically don't give up easy. However, I am pulling my hair out! I bought a 1997 Evinrude 25hp (e25reum) from a buddy and it hadn't been run in a year. My buddy said it ran rough the last time he had it out and started barely peeing.

First thing I did when I bought it was:

1- Replace the spark plugs.
2- Replaced the lower unit oil. (It was in good shape and not milky)
3- Replaced the water pump. The water pump was in rough shape...

I put it back together and was impressed when it fired up on the second pull and ran like a champ. A little rough but not bad besides smoking like a 2 stroke bandit. Anyways, what brought me looking for help is that for the life of me... I cannot get it to PEE!

The first time I started it on muffs. I figured maybe it just needed to be in a tank. That was a no go and produced the same results. I dropped the lower again and checked the waterpump to make sure I wasn't burning it up. It was in good shape and was obviously getting water.

I checked the pee hose coming off the engine and it was clogged with some kind of dirt. Got it out and put it back together thinking I fixed the issue. It still didn't pee on muffs or in a tank. I dropped the lower AGAIN and checked the water pump. It was in good shape still. I took my compressor and put the copper water pipe where it goes in the motor shaft and blew air through the system. (This was recommended by and Evinrude mechanic) I could feel the air coming out of the pee hole so there wasn't a clog. Putting the lower back on I shot the plastic "keeper" into my yard and lost it. Ended up having to order a new one! I just received that and put everything back together and it is still not peeing on the muffs or in a tank.

I am at a loss... Please help

Here is a link to a video I took showing the issue:

https://www.youtube.com/watch?v=ijjZRI2BHOs

 

[jasper60103]

edit: Deleted my previous comment.
I guess if it's not peeing with the muffs, putting it deeper in the tank won't work either. Good luck.

 

[racerone]

Put the boat in the water and test again.

 

[jasper60103]

Another thought, it could be a case of the copper water tube not aligned properly in the pump housing or a pinched grommet. Did you see the water tube going towards the hole when assembling the LU? Did you replace the entire water pump or just the impeller?

 

[Bosunsmate]

Can you hear the waterpump squeak if you turn the flywheel and slowly and have the motor out of the water?
Maybe you have installed the key wrong.
Apart from the other comments above the only thing else i can think of is a gasket leak pressurising the water chambers

 

[gm280]

Are you absolutely sure the copper tubing is indeed fitted into the water pump housing and fitted into the power head assembly properly. If that is not installed correctly, the water will never make it to the head and out the pee tail outlet. It will pump the water through the exhaust outlet in the lower section instead. I'd check that real good if you have any doubts...

 

[jakedaawg]

If everything is indeed assembled correctly, gasket, baseplate (in proper orientation), gasket, key, impeller, housing w/cup insert (if applicable), and the water tube is seated in the grommet, Then I would double check that they actually sold you the correct impeller for the housing you have. Someone may have replaced the housing with an aftermarket at some point.

 

[racerone]

Test this motor with the lower unit properly submerged.------Some do not work well on a hose as there is a lot of air in pressurized water.

 

[rscotth]

Racerone's reply was sort and sweet but worth listening too. I have a Johnson 90 that only drips when on muffs but has a nice stream once in the water. Different engine but I see yours starting to drip from the video so there is water circulating. Mine does the exact same thing and it has a new impeller and housing kit.

 

[ddwilson]

put it in a tank and make sure the water is well above the cavitation plate, nearly up to the tell tale water hole. If the water is not high enough pump may not prime well so will not see much water coming out.

 

[w2much]

Don't forget the thermostat. You already found a clog that passed through it to the pee hole.Compressed air passed through the tstat that should have been closed.

 

[jimp37]

Remove lower unit, put it in the barrel of water, connect drill to top of shaft { PROTECT TOP OF SHAFT WITH SOMETHING }, turn on drill, is water now coming from the water tube?? If so, the pump is good. You could be getting an "air lock" situation which happenned to me. Worked on my buddy's 5hp evinrude for one month straight, tried everything in the book and could not get it to pee. Removed head several times, no clogs at all. Put new pump in, still no good. Water tube had no clogs. Finally had a tech at Evinrude tell me to drill a hole in the side of the water pump housing, I thought WTH but figured had nothing to lose. Well it WORKED like a charm and then began peeing full stream.

 

[Sandor27]

Don't forget the thermostat. You already found a clog that passed through it to the pee hole.Compressed air passed through the tstat that should have been closed.

Actually, no, the compressed air did not pass through the T stat. This is a common misconception. On this motor the water path from the pump goes FIRST to the overboard indicator and THEN to the block and FINALLY through the T stat, then the head, back through the exhaust cover and down the leg and out the prop. Just because a motor is peeing DOES NOT MEAN IT IS COOLING. And a motor that is NOT PEEING MAY STILL BE COOLING PROPERLY. Keep that in mind if you ever hit mud and lose the pee stream. Once you get it back, you may not be cooling. I learned this the hard way.

As for the OP, does the motor overheat? It would overheat in about 5 minutes. Double check your installation of the impeller, double check the P/N. double check that the copper tube fits into the grommet at the top of the pump and that the grommet is not collapsed.

I know this thread is old, but I had to speak my peace about the water path.

my 2?

Sandor27

 

[Sandor27]

I just watched the video and it *looks* like exhaust is coming out the pee tube? Check to see if it is exhaust. If it is, then you have a gasket issue at the exhaust cover. Perhaps the pressurized exhaust is preventing the water pressure from getting out the pee tube.

 

[jimp37]

If you have tried everything possible, I would consider calling evinrude and inquiring about the airlock situation which has been known to happen on some of their water pumps. They will send you a diagram showing where to drill a small hole in the pump housing.