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  #11  
Old 04-29-2018, 04:44 PM
avorob avorob is offline
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Oh, yes I must've gone over 300 deg. The smoke was coming out and smelled like something was burning. It was no water in the coolant system for the gauge to measure accurately.
Is there an issue to try to run the boat with the burnt exhaust hoses?
How should I try to run the boat and what to watch for if you guys think it's ok to try to run?
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  #12  
Old 04-29-2018, 04:45 PM
avorob avorob is offline
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Do I check the impeller?
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  #13  
Old 04-29-2018, 05:03 PM
waterlogged882 waterlogged882 is offline
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Originally Posted by avorob View Post
Do I check the impeller?
Yes indeed.
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  #14  
Old 04-29-2018, 05:06 PM
waterlogged882 waterlogged882 is offline
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Quote:
Originally Posted by avorob View Post
Oh, yes I must've gone over 300 deg. The smoke was coming out and smelled like something was burning. It was no water in the coolant system for the gauge to measure accurately.
Is there an issue to try to run the boat with the burnt exhaust hoses?
How should I try to run the boat and what to watch for if you guys think it's ok to try to run?
Change the hoses.........or not... your call. I would minimum change hoses (no chance of flow restriction or back flow from an internal pocket), change the impeller, and look at the oil for signs of water intrusion (head gasket deteriorated). The oil should be clean looking, no water mixed (a milky look) or a scorched smell. Change the oil regardless but pay attention to what the current oil looks and smells like.

.
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Last edited by waterlogged882; 04-29-2018 at 05:19 PM.
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  #15  
Old 04-29-2018, 06:01 PM
avorob avorob is offline
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Quote:
Originally Posted by waterlogged882 View Post
Change the hoses.........or not... your call. I would minimum change hoses (no chance of flow restriction or back flow from an internal pocket), change the impeller, and look at the oil for signs of water intrusion (head gasket deteriorated). The oil should be clean looking, no water mixed (a milky look) or a scorched smell. Change the oil regardless but pay attention to what the current oil looks and smells like.

.
That sounds like a plan. Thank you.
Question, where do I buy the hoses (moded or at least how the hoses look like).
I see AMZN sells impellers StayCoolPumps Impeller Kit Replaces Johnson 09-812B-1 Jabsco 13554-0001-P Sierra 18-3306
is this the right model? Johnson 09-812B-1
Ill watch the oil as well.
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  #16  
Old 04-29-2018, 06:03 PM
waterlogged882 waterlogged882 is offline
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Quote:
Originally Posted by avorob View Post
That sounds like a plan. Thank you.
Question, where do I buy the hoses (moded or at least how the hoses look like).
I see AMZN sells impellers StayCoolPumps Impeller Kit Replaces Johnson 09-812B-1 Jabsco 13554-0001-P Sierra 18-3306
is this the right model? Johnson 09-812B-1
Ill watch the oil as well.
Look at discount inboard marine. Also first choice marine and ebasic power.

Amazon sells some gray market impellers. Get the better selection.
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  #17  
Old 04-29-2018, 06:21 PM
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1redTA 1redTA is offline
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yep, more than an impeller
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  #18  
Old 04-29-2018, 09:34 PM
avorob avorob is offline
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Tried running the engine after the overheat

Just tried to run the engine on idle. This time I opened the intake valve. LOL
It went over 160 deg and I shot it down.
While the warming up phase the smoke was coming from the exhaust and the plastic 90 deg elbow. See the picks.
The smell was different than the burning more like the material is burning.
The oil pressure was at 40+ PSI. The oil was clean. However, if the impeller is not pumping the water is not circulating and it will be now water penetration if the gasket was burned?

What should i try next?
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  #19  
Old 04-29-2018, 09:42 PM
waterlogged882 waterlogged882 is offline
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Run it with a new impeller. No impeller means no water for cooling. You have two water pumps; 1) a raw water pump and, 2) an engine circulating water pump. For now, the raw water pump is the one to get a new impeller in. Even if it looks good, replace it.

Water will not get in the oil through a degradated head gasket until it circulates through the engine cooling path.

Get it back to running and use it for a short while. Check the oil. The things you have said so far make me lean toward less damage. You may get lucky. White smoke is steam.

The smell is likely hose material.

One thing about it now, the engine is not seized. 160 deg. F is normal operating temperature (NOT).
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Last edited by waterlogged882; 04-29-2018 at 09:54 PM.
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  #20  
Old 04-30-2018, 02:13 PM
avorob avorob is offline
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Diagnostics. Step One. Bad Impeller

The impeller went bad. See the pick
Where should I check /fish for broken off pieces?
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