Is this normal for 9.9 Evinrude (cooling problem)?

[Valley Boater]

I replaced the water pump assembly on my 1979 9.9 Evinrude recently (first time I've disassembed a lower unit). I "can" tested the motor yesterday and didn't get significant flow from the "pee hole", just occasional drip. I noticed a lot of water flowing out of the lower unit and took a short video posted on You Tube.

http://www.youtube.com/watch?v=vcxri-nbjHw

Is this water discharge from the lower unit normal?

I purchased this motor "as is" and it wan't pumping any water when I purchased it but just assumed it was the water pump. I replaced the rubber boots for the water tube when I replaced the water pump. I ran the motor for about 5 minutes at idel and the head was getting hot enough to sizzle water when left on the head so I shut it down and thought to ask the brain trust.

Any suggestions are welcomed.

Don

 

[kbait]

Re: Is this normal for 9.9 Evinrude (cooling problem)?

I don't think that water coming out there is normal. Obviously overheating if water boils off head. Was the old impeller intact? If veins were missing, they can lodge in the cooling passages. I'd pull the lower unit and rig a hose to force water up the water tube. You should get a pee stream, even if the thermostat is closed (which it should be when cold). If not, I think you have an obstruction somewhere. Are you sure you didn't pinch the upper or lower watertube grommets upon reassembly?

 

[jasper60103]

Re: Is this normal for 9.9 Evinrude (cooling problem)?

As suggested, I would do the water pump test...

http://www.youtube.com/watch?v=xAJfBKNs7bo

 

[DJ]

Re: Is this normal for 9.9 Evinrude (cooling problem)?

Once warmed up, put your fingers on the top cylinder head. Can you hold them there for a count of three? If so, you're cooling.

The telltale may be stopped up. A straightened out paper clip does wonders to free them of obstructions.

 

[OptsyEagle]

Re: Is this normal for 9.9 Evinrude (cooling problem)?

I don't know if this is your problem but your motor is not submerged into the water enough. The water pump must be fully submerged since it is not self-priming. Drop it at least 4 more inches into the water, to be sure.

 

[raczekp1]

Re: Is this normal for 9.9 Evinrude (cooling problem)?

drop lower unit and atache garden hose to water pipe in mid section and let the water flow,and see if water will circulate.
in my case when i did it water cant circulate,even at full water blast.
thre problem was locked upper(under powerhead) water pipe gromet.

 

[bktheking]

Re: Is this normal for 9.9 Evinrude (cooling problem)?

Yup- upper grommet, blockage or the grommet at the top of the pump is bad, they sell a revised grommet for the pump housing.

 

[jmendoza]

Re: Is this normal for 9.9 Evinrude (cooling problem)?

Watch out! Do not use the revised bigger water tube grommet on you water pump housing unless it was equipped with it originally. If it has the smaller grommet, replace it with a small one. Well meaning people have misstakenly thought this to be an upgrade, it is not! The water pump rebuild kit comes with both styles because later engines used the wider grommet. You use the smaller grommet on engines that had it originally, and the big grommet on engines that came with it. This was done to make the water pupm kit universal for all years of the 9.9 and 15.

Here is the problem of using the bigger grommet: On the earlier engines the bigger grommet seals itself to the bottom of the evhaust housing and thereby blocks off the drainange of water in the exhaust housing so it will not drain, it remains full of water almost to the top, within about an inch of the power head to housing gasket. . This can cause at the minimum corrosion, and if exposed to freezing weather it will also crack the exhaust housing, and damage the exhaust tube when the trapped water freezes. If you lay the engine on it's side, the water trapped in the exhaust housing will get into the power head and corrode it out with disasterouse results.

Do not ask how I know!

 

[bktheking]

Re: Is this normal for 9.9 Evinrude (cooling problem)?

That's only on 74- 76 year motors, after 76 this is all my dealer sells.

 

[Will Bark]

Re: Is this normal for 9.9 Evinrude (cooling problem)?

As OptsyEagle shared that motor is not even close to being deep enough in the tank another 4-5 inches might get it deep enough for the pump to work.

 

[bktheking]

Re: Is this normal for 9.9 Evinrude (cooling problem)?

Bet you it does the same thing on muffs.