Evinrude 110 uneven cooling

[itsaboattime]

I have a 1987 Evinrude E110tlcur. I just finished rebuilding the cooling systm. New: water pump, upper water tube grommet, water diverters, thermostats, and all the affiliated gaskets. I checked and cleaned all the water ports and chambers. I rebuilt it because I was getting very little stream through the tell-tale and the high temp alarm went off. I have had this motor about a week.

After 10 mins at idle, on muffs, she reads with an infared thermometer, Port bank 105 degrees, Starboard bank 142 degrees. I have read on here that the starboard bank always runs hotter on these V4 outboards. 40 degrees seems to be quite a high differance to me.

Compression readings are:
#1 cylinder = 122psi
#2 cylinder = 117psi
#3 cylinder = 115psi
#4 cylinder = 118psi

It idles well with no coughs or sneezes.

I have yet to take it out to the water to see how it cools at any speeds over an Idle.

I know that timing and lean carburation can cause high temps.
I'm wondering which carbs run which cylinders. Does the upper carb run the top two cylinders and the lower carb run the bottom two?? Or do they power port and starboard banks?? If they run port and starbord banks, could the starboard carb be lean??

I will check the timing at first chance.

I have a seloc manual that might very well find it's way to the garbage very soon.

 

[TD_Maker]

Re: Evinrude 110 uneven cooling

Now that you did the work, how is the motor peeing now? Is the stream good and strong? Ddi you change the impeller or the entire water pump housing? I owned several of these V-4 motors, and I once had a cracked water pump housing that drove me crazy. Also, dont take it for granted that the overheat horn may be bad as well.

Take her out and let her rip. I am guessing bad overheat horn.

 

[itsaboattime]

Re: Evinrude 110 uneven cooling

Now that you did the work, how is the motor peeing now? Is the stream good and strong? Ddi you change the impeller or the entire water pump housing? I owned several of these V-4 motors, and I once had a cracked water pump housing that drove me crazy. Also, dont take it for granted that the overheat horn may be bad as well.

Take her out and let her rip. I am guessing bad overheat horn.

Changed the whole thing Impeller, housing, and plate. complete kit

It's pissing like a horse.......lol!!!

 

[itsaboattime]

Re: Evinrude 110 uneven cooling

I need some answers guys, please!! I hate doing this but.........bump.

 

[ezeke]

Re: Evinrude 110 uneven cooling

That's too much variation. Replace the water passage deflectors. You will need four pieces plus the cylinder head gaskets and a torque wrench.

 

[itsaboattime]

Re: Evinrude 110 uneven cooling

That's too much variation. Replace the water passage deflectors. You will need four pieces plus the cylinder head gaskets and a torque wrench.

I already replaced them during the cooling system rebuild.

 

[ezeke]

Re: Evinrude 110 uneven cooling

It's possible that you have one 105 degree vernatherm and one 140 degree vernatherm. They look just alike, but the numbers are stamped on them.

The only other things that normally cause that are having the bleed holes blocked in the valve body in the thermostst housing.

 

[itsaboattime]

Re: Evinrude 110 uneven cooling

I checked the holes in the valve body when I had it apart, they are clear. I never checked the vernatherms, just figured they were all the same........you know what they say about "assume". I will pull it apart and check.

 

[wilde1j]

Re: Evinrude 110 uneven cooling

Did you blow out the cooling passages with compressed air or water?

I usually do this via the water tube to the pump while the LU is off. You may be able to do this via the thermostat housing hole. There may be some stuff stuck in the stbd bank that you can't see.

 

[itsaboattime]

Re: Evinrude 110 uneven cooling

Boy do I feel stupid........prolly look that way too.

Took it to the river and went for a ride. Put my lil girl (she's 15) behind the wheel and went back and took the cover off. The heads were both warm to the touch, and about the same temp. Tell tale was telling and we were on plane before you could say "bob's your uncle!!". It ran smooth as glass and I didn't wanna come in but about an hour later mother nature decided it was time to rain so we had to. When the rain stops, I'm gonna hit it again!!