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Old 08-06-2012, 08:16 PM   #1
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Country: isle of wight
Boat make: 18.5 searay cb 4.3ltr, abcast 17, yam 130
Cruising area: solent/ priory bay

Join Date: Jul 2008
Posts: 80
water in engine....what to do next?

Hi all just when i thought there was not going to be much to do to get my boat on the water this summer, im hit with another problem!!!

Not used the boat for about 7 months, been stuck down a yard, got it home and when to turn it over and see there things were. Turned the key some noises but enging not turning over. checked batt teminals the positive cable was half hanging off to fixed that, cheched cables on back of starter all ok.
It sounded like the starter was trying to do its thing (starter was new last year) but engine not turning i wanted to check engine was not seized or something stupid so thought i would take some of the plugs out, put in gear and try turn prop. took plugs out and water poured out! tasted water was fresh not salt......(will come back to that) tried to turn engine over again and it turned and chucked all the water out.
checked oil thats clear and nice....
so where has water come from? i did put new manifolds and risers on with new gaskets...do i do something wrong, gasket broken and leaked when/ if i last flushed engine? was quite a lot of water prob 1 ltr? has the head gasket gone? or has some ass poured water in through the carb? (carb very dirty and bit milky, had the plastic cover off the top and fire muff was lose)
so got to work out how it got in there? also what do i do next? have taken the carb off and giving it a clean/ soak in meths also squirted half a can of WD40 in throught the plug holes and down in the engine from under the carb.
should i put the plugs back in and pour diesel down to soak or if it was not seized will it be ok.
Advice would be great but in laymans turms please.

oh p.s engine is mercruiser 4.3

thanks guys.
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Old 08-06-2012, 08:53 PM   #2
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Country: isle of wight
Boat make: 18.5 searay cb 4.3ltr, abcast 17, yam 130
Cruising area: solent/ priory bay

Join Date: Jul 2008
Posts: 80
just found an old post here

http://www.maxumownersclub.com/forum...4-3-mercruiser
the guy said
"The problem was that during the heavy rains during transport water flowed into the Engine compartment onto the shield that covers the anti-flash filter, down through the securing bolt that secures the cover and filter right into the carburator."

sounds a bit far fetched.?.. there is of course an engine cover and boat cover but boat cover is short and ends at the back of the engine cover but i guess even a persistant drip would soon add up after the rain we have had the last few months....maybe???
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Old 08-06-2012, 08:54 PM   #3
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Country: UK
Location: Coventry (but from Lee on Solent)
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Was it winterised and drained at the end of last season?
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Old 09-06-2012, 08:27 AM   #4
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Country: isle of wight
Boat make: 18.5 searay cb 4.3ltr, abcast 17, yam 130
Cruising area: solent/ priory bay

Join Date: Jul 2008
Posts: 80
was not winterised, nor drained as normally use during the winter, but i did turn the engine over to chuck out excess water in the cooling system.
if it was cracked head what else would i find? water in oil?
if the risers/mainfold was leaking would it have to be both of them to get water on both sides of the engine?

i was worried about running/ trying to run the engine as was worried if there is any corrosion it may damage pistons but sound like people normall would get plugd dried out, squirt some oil in the plug holes, put it all back together and try running it up again?

have the time today but need to replace gasket on carb, cheap i know but would be nice to have it today... can i use a home made one on the carb if i finnish my corn flakes thismorning?.
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Old 09-06-2012, 05:03 PM   #5
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Sounds great not winterising an inboard
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Old 09-06-2012, 07:56 PM   #6
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Cruising area: solent/ priory bay

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not much point when your normally out every weekend you can.
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Old 10-06-2012, 07:31 PM   #7
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Quote:
Originally Posted by adiesraceboat View Post
not much point when your normally out every weekend you can.
Quote:
Originally Posted by adiesraceboat View Post
Not used the boat for about 7 months,



If the waters been in it for any length of time, I think I'd be pulling it apart to check for damage. Much cheaper than running it and finding out the hard way.
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