Texas Freeze

[derekhtv]

Well, it looks like the Texas freeze may have gotten me after all.
Tried taking the Max out today and coolant temp kept rising an then smoke coming from engine. Got towed back to my dock and rand the engine diagnostics and got these 4 codes:

ECT higher than expected stage 1
CHT higher than expected stage 2
EMWT1 higher than expected stage 1
EMWT2 higher than expected stage 1

Any idea what these all are?

TIA

[sandm]

might help?
https://www.planetnautique.com/vb5/forum/nautique-topics/maintenance-technical-discussion/584474-dtc-116-ect-higher-than-expected-stage-1
https://www.planetnautique.com/vb5/forum/nautique-topics/maintenance-technical-discussion/459055-pcm-450-engine-codes

[larry_arizona]

Water intake plugged? Valve open?


Sent from my iPhone using Tapatalk

[TXSurf4]

Did you winterize it or have it done?

Any water or coolant in the bilge?


Sent from my iPhone using Tapatalk

[russellsmojo]

How old is max? Impeller new?


Sent from my iPhone using Tapatalk

[dakota4ce]

Was there any, well you know, water shooting out of anywhere?


Sent from my iPhone using Tapatalk

[derekhtv]

So I haven't ever changed the impeller actually and now I'm thinking that may be all it is? Ordered a new one and going to open this one up tomorrow and see if hopefully that's it. No water shooting out when i start the engine so a crack is seeming less likely.

[MJHSupra]

Make sure you valve is open on the bottom of the boat. Dealers usually close this during winterization. Along with the ballast valves.

Not sure if you have a flush-system, but you can see the water getting pumped into the boat.


Sent from my iPhone using Tapatalk

[Turbinesurgeon]

Well if that impeller is the original one then it looks like it’s pushing 4 years and either way should be replaced. Now if you discover the old one disintegrated then you should pull off the line going to the tranny cooler to clean out the rubber pieces. Now I’m not familiar with the closed loop systems and how they operate so take it FWIW. If you ever ran the boat on the trailer with no water this will kill a impeller in a matter of seconds. Try a fake a lake once you get the new one on to see if it’s working. Hope this helps


Sent from my iPhone using Tapatalk

[derekhtv]

Thanks a lot for all the suggestions guys. Will be pulling the impeller and checking cooling system today. New impeller comes tomorrow. Boat is still on the lift at my house so will be able to just lower into the water to check thankfully.

[derekhtv]

Have noticed a show drip out of the heat exchanger also. Hoping that is not cracked.

[zabooda]

If you had someone winterize it, you should do nothing and have them dewinterize it. After all, that is why you pay the bucks to ensure nothing is freeze damaged in the spring.

[derekhtv]

Should I be able to see water running through the strainer while it is running? Didn’t appear to be anything running through there.

[MJHSupra]

Should I be able to see water running through the strainer while it is running? Didn’t appear to be anything running through there.

Do you have the valve open and the back end of the boat sitting underwater?
If so, yes, the strainer compartment should fill up with water. I have not looked at mine while running, but you should see the water moving inside the strainer or some movement in there.

On the reverse of that, when I was making a change last summer while on the trailer,
If you close the valve,
Attach the garden hose to the strainer,
Turn the hose on,
Once the water starts flowing, the system will start to fill with water and you will hear it flowing out the transom exhaust before the engine is started.

Once you shutoff the motor, shutoff the garden hose and open the valve, the water remaining in the strainer section of the system will drain out of the bottom of the boat. Not all water drains out, that is why Indmar produces the documentation for pulling the blue-plugs and crossover hose for the winter process.

[bergermaister]

Captain Obvious here - but did you pull the dipstick and check for milkshake?

[korey]

Captain Obvious here - but did you pull the dipstick and check for milkshake?

Raptor powered boats won't crack the block and mix fluids when frozen because of the closed cooling system. The only risk is the heat exchanger(s) and manifolds.

[derekhtv]

No water seems to be exiting at the transom exhaust.

[derekhtv]

No water seems to be exiting the exhaust and from looking at all the pipes, it seems like the last place any water is moving to is the heat exchanger. Is it alright to open up the top of that and look for obstructions myself or is it just a tow out the water and bring in situation?

[korey]

There is nothing to it. Take that one screw out and pop it off. The bottom is a little different because of the drain, but not much. Just line the gasket up when you put it back on.

Sent from my SM-G973U using Tapatalk

[derekhtv]

Ok, so I'm not sure how much water should be coming out of the exhaust when the boat is just sitting in neutral, but there actually is a little bit coming out with the hose hooked up. After talking with Rinkers, I have checked engine oil and v drive oil for signs of coolant and it all looks good. Also checked the freeze plugs and they haven't popped at all. The coolant reservoir is actually empty so I need to fill that up again and see how that does. Haven't run the boat long enough to see if engine temps keep rising but I think that is the next step (drop the boat down on the lift into the water and sit in neutral to operating temps).

[larry_arizona]

How did your impeller look when you replaced it?


Sent from my iPhone using Tapatalk

[DNIXD99]

Be sure and check your bilge pump too. Mine was trashed from the freeze. I had a Engine Compartment Heater in there too.

[derekhtv]

Impeller looked good but I replaced it anyways.

Will check the bilge pump tomorrow.

[derekhtv]

Looks like the heat exchanger must be bad now. After speaking with the local Tige dealer here and hearing that the heat exchanger on a lot of the Raptor 400s was the issue after the freeze here, I ran the boat up to operating temp and there is definitely a leak out of the bottom of the exchanger. Will be replacing now and see from there.