Water pump... Somethings not right

[stevetedder]

Just changed the water pump assembly on my 84 JohnsonV4 90hp and now water is shooting out along where the lower unit bolts on to the midsection and also some water is flowing out of the shift linkage hole also. I took it back apart and verified everything was put together properly and the only thing I could find was the tapered water tube grommet was in upside down(Thicker edge up). Aside of that I used Hi temp rtv on the water pump gasket and plate and permatex #2 in place of the adhesive 847 on the seals/o-rings. Any thoughts on why I am spewing water in places I shouldnt? Also is there a way to check for leaks before reinstalling the foot?

 

[F_R]

Re: Water pump... Somethings not right

It is normal for water to leak out that seam. Depending on the model, some were sealed with 847. Newer models actually have drain slots there. Anyhow, don't worry about it. Any water that comes out there is destined to go out the exhaust anyway. It has already been through the powerhead and done its job.

 

[1946Zephyr]

Re: Water pump... Somethings not right

I think they designed motors like that to make operators scratch their heads and ask questions.

 

[Haffiman]

Re: Water pump... Somethings not right

Providing the big rubber seal for the exhaust tube is in place and good condition, nothing to worry about.

 

[boobie]

Re: Water pump... Somethings not right

If water is coming out the shift linkage hole you left out a seal some place on the top of the water pump.

 

[F_R]

Re: Water pump... Somethings not right

How much is coming out there? If a trickle, it too is harmless, same water that is coming out the seam. If gushing out, the shift rod grommet is missing or shot.

 

[stevetedder]

Re: Water pump... Somethings not right

Exhaust boot is in place (a little dry for sure)as is the shift rod grommet(Came with water pump kit). I wouldnt describe it as gushing, more of a trickle, but it wasnt coming out there before I installed the water pump kit. As I said the water tube grommet was upside down before. I have compared the exploded view and install instructions to what I have and see nothing else different.I will put the foot back on today and see what happens. It now has at least twice the volume coming from the pee line as it did before. More of a squirt than a pour on that one.

 

[stevetedder]

Re: Water pump... Somethings not right

OK put it back together same result. Water out of shift linkage, light spray on both sides of lower unit/midsection seam and holes at rear just above cavitation plate. None of it a gush but some a slow pour. I also see a little exhaust smoke coming from here, does this mean the boot isnt sealing properly ?

 

[F_R]

Re: Water pump... Somethings not right

I don't know what more I can say to convince you. That motor has "wet sleeve" construction where discharge water fills the space between the outer and inner exhaust housings. That is to silence and cool the area. Once full it overflows and is discharged back to the sea. Any water you see coming out the bottom is going back to the sea anyway. Some of the "leaks" are intentional. If you want to stop it from leaking out the seam, drop the unit down a bit and get some sealant suitable for metal to metal joints in there. Scotchgrip 847 is the "correct" stuff, but most any substitute is ok because it is not a critical thing. But I'm telling you the leak is harmless.

As for the shift rod grommet, I'm surprised that it is still leaking with a new grommet, but that too is harmless.

Are you also talking about a couple of fairly large holes in the mount aea, with the drive shaft inside? Those are drain holes and water is supposed to come out there. If it didn't, water would fill up the drive shaft chamber and possibly cause damage at the top. There again, if the seal is missing off the top of the pump housing, you will get an abnormal flow.

I'll guarantee that if we were to start my motor on muffs, you would have to stand back or you would get wet feet. Water squirts out in many places.

 

[Fisherball]

Re: Water pump... Somethings not right

The new pump is moving much water than the old so it leaks out new places. When the pump starts to wear out it won't leak from those places.

 

[stevetedder]

Re: Water pump... Somethings not right

OK OK Im convinced. I came to that after a couple of people here said it and after reading the instructions a zillion times both with the kit and in the service manual and was certain I had Installed everything correctly. I put it all back together this afternoon. What can I say, some of us are more hard-headed than others. On the plus side I'm now really good at removing the foot and taking apart the pump

 

[stevetedder]

Re: Water pump... Somethings not right

Its now almost 2 yrs later and you were right, the water is no longer coming from those other places, only where is is supposed to. Thanks!!!!!