stea coming from tell tale ?

[merkdawg0084]

1984 evinrude 9.9. I just installed the impeller and got everything together. put the motor in a barrel and started it, let it run for about a minute give or take. No water came from pee hole, only steam. Took motor back apart, impeller is in good shape, everything looks good. This motor also has a new thermostat? I'm stumped?

 

[racerone]

Was water in your tank 6" above the pump ?----What did the old impeller look like ?-----Drive pin in place for the impeller ?

 

[merkdawg0084]

Yes water was way above the cavitation plate. This motor sat for years. nnew impeller is just standard procedure. drive pin was in place too. Before I put this motor together i cleaned out all the water passages. I also made a hose you hook to water hose then copper tube to check to make sure water passages were clear before i put lower unit back together.

 

[ajgraz]

Not familiar with this motor, but I assume the impeller is your typical rubber "star" with a brass center hub? Any chance the rubber came free of the hub? (Used to happen a lot on an old Merc motor I had...I blame poor QC on newer Chinese-made impellers)

 

[merkdawg0084]

No sir I took it all apart and checked it out, it’s still good. I put a little grease in the cup where the impeller sits. For ease of installation. Wouldn’t think that would be an issue.. ?

 

[F_R]

Deleted

 

[Bosunsmate]

Just how high above anti cavitation plate was the water level?
Perhaps the water pipe didnt line up when installed

 

[merkdawg0084]

Well I’m going to put it back in the barrel tomorrow and fill the water up pretty high. And when I took it apart today, the grommet that the water tube goes into was not rolled over or anything. I believe it all lined up ok.

 

[oldboat1]

Any issues with the t.stat installation? Tough one (trick is to take off the head cover.)

Was the motor pumping OK before you worked on it? The grommet up under the powerhead can be a problem, but if you were getting water out of the tell tale and through the powerhead when you connected the hose to the tube, you should be OK.

Did you try running a wire in the tell tale to try and clear it?

 

[merkdawg0084]

This motor was an old barn find, and yes I found out how tricky that T-stat is to change. I also cleaned out all the water passages when I had this motor apart. Used compressed air and all that. Thought about taking t-stat out and trying, but I want that to be a last resort kind of thing.,

 

[oldboat1]

Yeah, that's a hassle just for testing. Main issue is whether the water is flowing. Should have some mist out of the ports on the back of the leg, and that will become a pretty heavy spray under some acceleration. Put your hand in front of the ports to see if there is some mist exiting when testing, and check the surface temp on top of the head (should be warm to touch. Too hot to touch is too hot.)

 

[merkdawg0084]

Well this motor has the tell tale pee hole instead of just mist, and I meant for my post to say steam was coming out of the pee hole hose. Thx

 

[oldboat1]

understood. I have a couple of those motors. Whether or not water is coming from the tell tale does not tell you whether the head is getting cooling water, or whether the motor is running at the proper temp. First issue is whether the motor is cooling properly.

 

[jbuote]

Ok...
(Edit Oldboat1 and I posted the same time.. LOL... PLEASE.... Listen to others first before my thoughts..... )

NOWHERE near a pro here, but as I read things, you said you have a hose you connected to the copper water tube to be sure everything was clear..

I'm presuming that when you did that, you had water coming out of tell tale and prop etc.. where expected?

If so, my newbie brain is wondering...
Can you take LU off, submerge it in water and turn driveshaft by hand/drill etc?
Does water come out of the pump like it should?

If hose worked fine on the water tube up and out like it should, then can you test the LU is working?
Maybe a seal or grommet or something around the impeller housing is leaking which means not enough pressure from impeller to go up the water tube?

This might not make sense, but it's just a crazy thought...

Hope it may be helpful.. LOL :noidea:

 

[merkdawg0084]

don't think it would be a good idea to submerge my lower unit in water with it not being connected to my motor!! As water would get into my lower housing and into my lower unit oil..And the purpose of the impeller is to force water UP the copper tube to the powerhead and out of the pee hole..

 

[jimmbo]

don't think it would be a good idea to submerge my lower unit in water with it not being connected to my motor!! As water would get into my lower housing and into my lower unit oil..And the purpose of the impeller is to force water UP the copper tube to the powerhead and out of the pee hole..

The lower unit is sealed and designed to be submerged. However, Water Pressure provided by the pump can force water past weak/worn seals directly under the water pump

Is the passage from water intakes to the pump clear? Is the pump housing seated properly? What condition was the bottom plate of the water pump?


With the lower unit off, hook up a garden hose to the water tube and see if the tel-tale sprays water. You might have to start the engine and let it warm up, but unless the tube is plugged the engine should be getting cooling water

 

[merkdawg0084]

yes passages are clear. I did use a water hose contraption that i made from Leeroy's Ramblings. Hooked it to the copper tube and water came out of pee hole, when i started motor today i could feel air coming out of tell tale hose, then steam then I shut it off. I just got home and looked at my intake screen. some of those have been broken, maybe debris is in that screen? If so is there a way to flush that without taking LU off again? I just looked that screen up and it says part is NLA> What could I do about that? Thanks

 

[Bosunsmate]

If steam is coming out when you start the motor and a hose is attached to the inlet tube then it sounds like your motor is getting its water compartments pressurised. Exhaust leak into the cooling jacket or maybe a leak in the head gasket. Inspect pistons through spark plug hole, a any shiny?

 

[racerone]

Another post / thread on here says it is now working fine !!

 

[Bosunsmate]

Another post / thread on here says it is now working fine !!

Thanks Moderator. No more comment from me to this then, Double posters peeve me off