1980 15hp evinrude what should i be seeing

[Happyfingers]

hello

i have just replaced the impeller and thermostat
brand new gasket for the cooling plate
cleaned out all the water passages with compressed air

put it all back together and start her up in a tub

what should i be seeing ?

the pee hole is definately peeing (but the water doesnt seem to get warm)
but i could not see any water coming out the exhaust holes at the bottom (should i be)

the engine ran quite happily for a good 10 mins
i touched the cooling plate but it was too hot to touch for more than a second or so (after about 10 mins run time)

im not exactly sure if this is what i should be seeing
if there is supposed to be water coming out the exhaust holes on the leg then i can only guess that the thermostat isnt working (its brand new)

any ideas ???

 

[bktheking]

Re: 1980 15hp evinrude what should i be seeing

After 30 seconds or so you should see water coming out of the exhaust hole, if not, you may have a blockage or a bad "new thermostat". The telltale indicates that it is pumping water if you see water coming out of it.

 

[Happyfingers]

Re: 1980 15hp evinrude what should i be seeing

ok thanks for your advice

i pulled it all apart again much to my disgust as in doing so i destroyed the brand new gasket (only one of that gasket in the kit)
so i will have to resort to making a new one from scratch as im not ordering another kit

ok so what did i find
the thermostat was all clogged with sand, when i unclogged the lines the blockage must of just moved a little and starting her up has flushed it all into the thermostat so it was effectivly blocked
so i pulled it all out and tested it in some hot water and it indeed does open

so ive left it alone and plan to have a think about my next move and hope for some advice off you blokes who know what you are talking about

im thinking that if i make a new gasket and put it all back together there is every chance that the same thing will happen
so would it be a good idea to start it up without the cooling plate installed and flush some water through it to clear all the sand out once and for all ?

the pee line was blocked when i first pulled it apart and i think the blockage is still in there

im in a holding pattern on this one and will wait for some solid advice

cheers and Giday from Australia (we dont really say giday that much )
usually it just comes out naturally when we are talking to our mates

anyway once i get the engine working its time for this tinny to go for a spin after an 8 year lay up, the engine despite being blocked is pristine and still has the plastic on it in places

 

[DJ]

Re: 1980 15hp evinrude what should i be seeing

so would it be a good idea to start it up without the cooling plate installed and flush some water through it to clear all the sand out once and for all ?

Yes, that would be a good idea.

You will not necessarily see water from the exhaust relief ports unless you are at temperature and running on plane.

 

[Happyfingers]

Re: 1980 15hp evinrude what should i be seeing

ok thanks for the quick response

ill give it a go and see what happens

 

[Happyfingers]

Re: 1980 15hp evinrude what should i be seeing

ok now im even more confused

put it all back together and still no water is coming from the second set of holes just above the intake holes towards the back of the leg (exhaust holes ?)

however and its possible that this was happening before i pulled it all apart

there is a strong flow of warm water coming out of a hole that is on the left side (looking from the back) below the intake holes and in the area that the gear change rod is (its not the small drainage hole) the hole is big and i couldnt notice a thread in it (its at the front left and below the intake holes)

i put my finger in it and all that did was fill the leg up with water
the flow from this hole is quite strong and the water is warm

perhaps this model engine gets rid of its flow in this way ?

i dont know
im not pulling it apart again guess ill have to take it out for a spin and see what happens

the engine is a 15hp evinrude and i say its 1980 because it has a 1980 in the model number (thats as much as i know about it)

any ideas ?

 

[Rick.]

Re: 1980 15hp evinrude what should i be seeing

Evinrude doesn't put the year (1980) in the model number so one thing is to post the model number so we can figure out what you have. Fill your barrel so the leg is well submerged in the water. In your observations of what happening you make it sound like there is not nearly enough water covering your leg. What gasket got wrecked? Are you talking about the rubber grommet at the top of the water pump the water tube fits into? If your overheating your playing with fire and could cause severe hurt to your engine by taking it to the lake. Try more water and let us know.. Rick.

 

[Happyfingers]

Re: 1980 15hp evinrude what should i be seeing

its doesnt appear to be overheating
it seems to run quite happily

the first time i used a tub and the second time i used the ears
the hole im reffering to is outside the leg not the rubber grommett that is all fine

its a rather large hole towards the front of the leg on the left hand side (looking from the rear or prop) this hole is under the intake holes that you attach the ears to

the model number is 15804b and its painted blue

thanks for all the advice

 

[Happyfingers]

Re: 1980 15hp evinrude what should i be seeing

ok guys now im frazzled

i just gave the engine a run again and the water only seems to drip from the pee hole

the hole that i was refering to above is a large hole and water comes out of there warm and under pressure, i was lead to belive that this hole is just a drain hole for the area where the gear rod is located

now if you put your finger on there and plug it up water immediately comes out of the 2 exhaust holes on the stem and also the exhaust holes just above the intake holes (a lot of water)

i just dont understand why this is happening because there is no outflow that im aware of that goes to the area where the gear rod is in the lower leg (short shaft), and if you plug it up water comes out of the correct places

i guess if you were at speed the pressure of the water passing by the engine would give the same outcome and cause the water to come out the exhaust im just not sure if thats whats supposed to happen

does anyone know whats going on here ? i sure dont

 

[bktheking]

Re: 1980 15hp evinrude what should i be seeing

Post pics, I'm as frazzled as you are?????

Maybe this will help you:

http://www.sschapterpsa.com/ramblings/water_circulation.htm

 

[jmfstl]

Re: 1980 15hp evinrude what should i be seeing

The model number is for a 1978 motor.

shop2.evinrude.com/Index.aspx?s1=dc958f3f77de4a4c6653941b767ee9fa&catalog_id=0&siteid=1

 

[jmendoza]

Re: 1980 15hp evinrude what should i be seeing

The hole in the gear case below the water intake is the gear case and exhaust housing (mid section) drain. The mid section will not fill with water enought to blow out the top exhaust releif holes unless you have it in a tank/tub/trash can. With muffs on it just won't fill up enough to do this. If the shift rod grommet is bad, it will leak alot of water out of the mid section and hamper it filling completely, but not harm the cooling. The gasket I'm assuming you screwed up is the thermostat cover? It's availlable seperately for about $5.00. You can remove the thermostat, replace the cover, and hook a hose to the water pipe/tube that goes to from the water pump to the power head/engine block, to get at it, you have to drop the lower unit/gear case. Outboards do not walk, so they don't have "legs" OK guys? Anyway with the copper water tube exposed, you can force water through the block and flush it of sand with water from your hose. After you are done, replace the thermostat cover and gasket, re fit the lower unit/gearcase and you are ready to go test it again. I would replace the impeller, cup, and stainless plate if it had that much sand in it( get a pump rebuild kit). Good luck,
Jay

 

[Happyfingers]

Re: 1980 15hp evinrude what should i be seeing

ok pulled it all down and had another look
i did find a small blockage in the pee tube
it seems to be working now but still doesnt throw water out of the exhaust
im thinking it may be coming out the prop because inside the stem there is a removable metal plate that would not allow water to exit the little exhaust holes on the bottom of the leg

here is a youtube vid of it once i had it all back together, you can see the water spewing out the drain hole

http://www.youtube.com/watch?v=szPiBJGYxQk

thanks for all your advice guys
time for a test run i feel