exhaust venting from pee hole

[borntobag]

One Evinrude 60hp twin, 1983 model, bought this last week with a weak tell tail. Cleaned the tell tail and tube back to the head, replaced the impeller, its housing and all the associated gaskets etc, (the old impeller was new, if that makes sense) Started it in a drum with the water about 2 inches over the level of the impeller, still got a bribble coming out of the tell tail. However, on intially starting it up i noticed what appeared to be exhaust coming out of the tell tail and when the bribble arrived the exhaust was still evident. Is this normal ? have I got a blockage in the head causing low water pressure out of the tell tail or a blown head or head gasket as surley the cooling water shouldnt be mixing with the exhaust. Any help appreciated. Cheers Rob

 

[Joe Reeves]

Re: exhaust venting from pee hole

Remove the spark plugs and inspect them. What do they look like (exactly).

What is the compression on each cylinder?

 

[borntobag]

Re: exhaust venting from pee hole

160 psi on each pot, spark plugs look like its running rich, oily wet and dark brown. She starts fine and revs fine, but the second i started it after replacing the complete water pump i noticed exhaust coming out of the tell tail before any water, which indicates to me it was exhaust and not steam.

 

[Joe Reeves]

Re: exhaust venting from pee hole

That's excellent compression and indicates that the head gasket and bolt torque is as it should be.

If the water exiting the water telltale outlet is strong and steady, and the engine does not overheat, I would think a possibility exists that the exhaust blasting down the exhaust housing somehow momentarily entered the water pump area and the water tube.... rare but it happens.

Has the engine been running as it should or are there other problems?

 

[borntobag]

Re: exhaust venting from pee hole

thats the problem Jim, the water isnt exiting the tell tail very stronglyat all, only a bribble with exhaust gas. Just taken the head cover and the head off and going to check the t-stat now. See what you mean about exhaust entering the pump area, but i just changed the pump and seals? bit confused now.
Must admit i havnt run it for very long as the tell wasnt performing maybe the t-stat didnt have enough time to open, but saying that isnt there an audible alarm built in (apart from hissing and bubbling noises!).


As my father used to say "if its got an engine or tits, you'll have trouble with it"

 

[borntobag]

Re: exhaust venting from pee hole

t-stat opens fine in a pan of water. Put water down then t-stat housing with a footpump full of water, and it came out of a small slot next to the anode which is boat side of the leg and in line with the joint of the bottom case and the leg, rather than the inlet grids where i would imagine.

Which leads me to think the seal between the pump and the head isnt right, and as you Jim said exhaust i is getting in through there.

Question: the water tube from the pump to the head, how is it connected at the head end? is it push in like at the pump or screw in?

 

[Joe Reeves]

Re: exhaust venting from pee hole

Pouring water down the thermostat area would allow that water to exit out the slots/holes just above and to the rear of the cavitation plate. That is where the water would exit when the thermostat opens...... normal.

With that amount of compression, it's unlikely that the head gasket would be faulty, BUT the only areas where exhaust could enter the water passage would be:

Failing head gasket or worn sealing surfaces of the cylinder head and block.

Worn exhaust baffle plate area and/or gasket.

Failing gasket between powerhead and adapter plate or worn sealing surfaces.

And....... If you accidently failed to properly align the water tube with the impeller housing grommet, the possibility of hitting the water tube and shoving it upwards so that it cannot seal properly is a great one.

The water tube has a flange at its top and is secured to the bottom of the adapter plate with a coupling and two screws.

 

[borntobag]

Re: exhaust venting from pee hole

Thanks Joe, youve been a great help and sorry about refering to you as Jim earlier, bit tired and mind doing circles trying to fathom this out. Hopefully there is light at the end of the tunnel, not too much to check out now.

 

[tashasdaddy]

Re: exhaust venting from pee hole

the thremostat is suppose to have a small hole in it to allow water thru to the tale tell. if it is clogged you'd have no or poor tale tell.

 

[borntobag]

Re: exhaust venting from pee hole

nope, no hole i this baby apart from the obvious one when it opens. Will check with a dealer tomorrow. Thanks

 

[borntobag]

Re: exhaust venting from pee hole

all sorted,
new pump didnt do anything because the rubber gromit on the water tube at the power head end was shagged and wasnt allowing enough water past. On the plus side i now have a rebuilt engine that over the last 4 days have become very knowledgeable about. Thanks for everybody who took the time to post replies. Rob