Problem with de-winterizing

[Don S]

Re: Problem with de-winterizing

Is this the hose you are referring to? #37 is so, which end was off A or B.

 

[justonian]

Re: Problem with de-winterizing

Yes, that is the hose. And it would be "B."

 

[Don S]

Re: Problem with de-winterizing

There would be no reason to take that hose off for an impeller change. I know of no reason anyone would remove that hose except to replace it.

 

[justonian]

Re: Problem with de-winterizing

Apparently, the mechanic shop is closed today. I guess I will have to inquire as to what was involved with the impeller changeout - like whether or not they took off the Thermostat Housing, bellows, hose, etc to get to the water pump assembly on the forward end of the upper gear housing. I just don't see that hose popping off on it's own without somebody doing something.

The kind of pressure needed to pop it off would have to involve some sort of blockage or something maybe? And if they blew out the lines properly when de-winterizing, I'm pretty sure there should not have been that much anti-freeze discharged with the exhaust.

One update, my dad checked the oil and there isn't any water/coolant in the oil, so the heat exchanger should still be intact. I suppose one of my bigger concerns now is the throttle cable and whether or not that is the cause of the poor idle/dying when put into gear. Or maybe just the plugs got torched. This may be the first time I've ever wished for fried plugs......

ETA: I was looking at the diagram in the book wrong. The pump assembly is on the aft end of the upper gear housing, so yeah, they would not have to take that hose off to replace the impeller. I'll have to ask my dad on if they did any maintenance to the thermostat - if they took off the thermostat housing assembly, then the hose would have to be disconnected. Of course, I don't know why they would take off the whole housing unit. I'm just reaching for an answer....

 

[tractoman]

Re: Problem with de-winterizing

I don't know the answer to the hose issue, but I think you would have been better off returning to the mechanic when the disconnected hose was discovered. That way he could have seen how it was left. I am not saying who is right, but he could have had the chance to correct the issue and make sure all was well for you. The mystery impeller is odd too.

 

[Bt Doctur]

Re: Problem with de-winterizing

Never seen the 3.0 OMC motor fresh water cooled , you sure you have a heat exchanger?

 

[justonian]

Re: Problem with de-winterizing

Don't get me wrong - I definitly see that side. We made the decision to continue on with our fishing trip. It's a 50 minute drive hauling the boat up to Owhee from Ontario (border of Idaho/Oregon), first day of fishing, etc. But we did correct the issue and it was at least running within specs as far as oil pressure, temperature, etc. I was afraid to run it past 3500-4000 RPM and there is the issue I noticed later in the day with the poor idling and it dying when put into gear - which makes me think the throttle cable got damaged.

All in all, the damage (if any) was done when it overheated - not by the use afterwards. We pretty much babied it when we were running it afterwards. I'm not saying it's good that we operated it after we found the problem - I just don't feel that we extended the problem any, if that makes any sense.

 

[justonian]

Re: Problem with de-winterizing

Never seen the 3.0 OMC motor fresh water cooled , you sure you have a heat exchanger?

No. And after you mentioning that - looking at the diagrams for the 3.0 it shows a raw water system that circulates through the engine block, cylinder heads an exhaust manifolds. Interesting - would not have guessed that. Guess that's why I came to you guys for help If that's the case, then the antifreeze that was expelled would have to be from not being fully flushed in the de-winterization, correct?

 

[Don S]

Re: Problem with de-winterizing

I guess I will have to inquire as to what was involved with the impeller changeout - like whether or not they took off the Thermostat Housing, bellows, hose, etc to get to the water pump assembly

The drive doesn't even have to come off. Just the back cover of the drive and the water pump is right there. It's a 10 to 15 minute job to replace the impeller on a cobra drive.

The kind of pressure needed to pop it off would have to involve some sort of blockage or something maybe?

It could be the hose is old and stiff. and when the steering turned it popped off. Hard to say.
But it is NOT something a mechanic would mess with to change an impeller, or even to pull the drive and check alignment.

 

[justonian]

Re: Problem with de-winterizing

The drive doesn't even have to come off. Just the back cover of the drive and the water pump is right there. It's a 10 to 15 minute job to replace the impeller on a cobra drive.



It could be the hose is old and stiff. and when the steering turned it popped off. Hard to say.
But it is NOT something a mechanic would mess with to change an impeller, or even to pull the drive and check alignment.

Ouch. As much as I don't like that answer, it does seem the most reasonable. The hose was difficult to manuver back onto it's connection, but whether it was stiff enough like old and brittle... it did seem to still have some flex to it. But it was out of the water for 8 months, so maybe it was just dry before we put it back in the water.

Just from your guys experience - how often do you change out these particular hoses?

 

[Bondo]

Re: Problem with de-winterizing

Just from your guys experience - how often do you change out these particular hoses?

Ayuh,... Normally 5 to 8 years....
I'm just changing mine after 10 years,+ it shoulda been done 2 years ago...

 

[Bt Doctur]

Re: Problem with de-winterizing

Mots transom kits come with the hose , so figure 5-7 years
Motors don`t like being overheated so :
pull spark plugs ,check for any water in the cylinders
compression check to rule out a headgasket issue
check all rubber exaust fittings and anything else that is routed close to the exaust pipe