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rrhyne

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Reply with quote  #1 

Hi all. First, a great big thanks to the members of this forum for an awesome resource. This site helped us with a shift rod adjustment issue (wouldn't go into reverse), rigging and other issues and has generally been invaluable and incredibly well moderated.

On to the question:

I recently purchased a used 2011 (made in 2010) 200 HO etec that had been sold through military surplus. It has around 660 hours on it, 80% of which were at idle.  We've rigged it on a 2000 230 Seahorse Hydra Sport walk around. I put about 10 hours on it yesterday.

I'm seeing lots of fresh salt encrusting around the plugs and what I think are the injectors. The source of the water seems to be coming from the thermostats covers.

Engine ran great all day yesterday between 150° and 160° in 70° water at 4k RPM doing 25knots in the open ocean. I've not seen WOT temp due to lack of calm waterways in the vicinity. 

We suspect either a pressure issue or bad seal at the thermostat cover. 

I plan to change the thermostats in the next week (read some horror stories about getting the covers off!), but could the PRV be an issue here? Anything else I should check?

Thanks in advance!

Model/Serial #: E200DHXIIB / 5291537 


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Model E200DHXIIB 
Serial #: 5291537 
olypopper

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Reply with quote  #2 
Yes, check the prv and you can search this site for lots of information. Run the engine with the cover off and verify where the leak is.
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rrhyne

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Reply with quote  #3 
Thanks olypopper,  I'm sure water is coming from the thermostats. I can see the salt trails leading from them.

My question is more about what is the likely cause. Are bad seals common there or could this be a symptom of something more difficult like a pressure issue. 

I just checked out my buddy's brand new 150HP E-TEC with 48 hrs on it. He had the same salt deposits and trails coming from the thermostats. 


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Model E200DHXIIB 
Serial #: 5291537 
olypopper

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Reply with quote  #4 
The caps are oring sealed.  They usually don't have problems except with improperly serviced or worse, not serviced.  If you to break the caps, they are plastic and not hard to chisel out of the heads.  Take your time and don't ding the threads inside the cylinder heads.  



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"Never believe what you read on the internet"-Abraham Lincoln
rrhyne

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Posts: 13
Reply with quote  #5 
Ok, great info.

Will try to assemble the tool I've read about and pull them off. I bet the o-ring is shot.

Thanks!

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Model E200DHXIIB 
Serial #: 5291537 
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