2002 200hp efi saltwater water in cyl #6

[workboot]

serial # OT556519 engine ran fine all last year , when taking it to boat ramp at end of season in no wake zone (about 10 min ride) notice temp gauge going up , no alarm sounded and no sign of over heating. where i keep boat in winter i hooked up garden hose (not muffs) and flushed with water for about 10 min. engine not running. went back 2 weeks later to spray fogging oil in cyls. and when i pulled out #6 spark plug i would estimate 1 to 2 ounces of water came out , also a couple drops came out of cyc. #5 . I guess I'll have to pull the head but just looking for some input from others who have ideas what it might be. Thanks

 

[Faztbullet]

Divider plate rotten

 

[workboot]

Divider plate rotten

ok thanks , where is that located and how hard a job to replace ?

 

[Dukedog]

first number is a 0 (zero) not an O...

 

[workboot]

ok it's a "o" didn't know that Dukedog . I clicked on your picture above your name , in the picture is the divider plate between the 2 cyl. banks . Thanks

 

[Dukedog]

ok it's a "o" didn't know that Dukedog . I clicked on your picture above your name , in the picture is the divider plate between the 2 cyl. banks . Thanks

it is but that one's just a little different than yours!!!.. yeah, won't show up with an O.... here ya go... exhaust manifold and exhaust plate window, items 1, 2 and 3....

2002 Outboard 200EFI [L] [1200413ZD] - Parts Lookup | Crowley Marine

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[workboot]

thank you , I will get to boat today and have a go at it and let you know how it goes . thanks for your help .

 

[Faztbullet]

Careful with the salty bolts

 

[workboot]

so I got the divider plate off , only 1 bolt was a little tuff to remove , and it was not rotten at all , a little carbon but not bad , so where should I be looking next ? head gasket ? Thanks

 

[dingbat]

so I got the divider plate off , only 1 bolt was a little tuff to remove , and it was not rotten at all , a little carbon but not bad , so where should I be looking next ? head gasket ? Thanks

Would have been the first place I’ve looked.
They get salt permeated and start leaking. If you see a white buildup at the joint it’s time to change.

 

[Faztbullet]

When it's in two opposite cylinders it usually a divider plate. Look the divider over real good and gasket mounting areas.

 

[workboot]

it's the middle and lower cyl on starboard side , the middle one was just a few drops of water , the lower one an ounce or too. I ordered the gasket and seal but they won't be in until Tues. or weds. . I also took off thermostats housing and there was no thermostats in either side . my dealer had those in stock . Would that be part of the proplem ? I will clean up plate this weekend and take pictures . I've had this motor for 3 years and it always ran good . Thanks for all the help .