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Old 01 October 2006, 13:09   #1
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Country: Belgium
Town: Kluizen Ghent
Boat name: Spirit
Make: Ribtec
Length: 6m +
Engine: 90HP Honda
Join Date: Nov 2004
Posts: 28
Merc.90 4-stroke water in oil

Hello ribbers,

This afternoon i did some inspections on my friends boat engine.
Mercury 90 hp 4-stroke year 2000
When i pulled the oil level gauge out,
i noticed a higher level on the gauge then normal.
I decided to take some oil out from the engine.
There was a lot of water coming out the first moment.
I think there is a problem with a gasket between the powerhad
and the upperleg.
Is there anyone who now this problem and to resolve it.

Thanks for replay.
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Old 01 October 2006, 13:15   #2
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Country: UK - Wales
Town: Pwllheli-North Wales
Boat name: Delta 1
Make: Delta
Length: 6m +
Engine: Mariner 90hp Optimax
Join Date: Mar 2001
Posts: 2,367
Could be a number of things, its time start stripping to investigate.

Are you 100% sure the engines not been under water?

The merc 90hp Four Strokes are normally bullet proof!

Jono
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Old 02 October 2006, 16:48   #3
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Country: UK - England
Town: Herne Bay
Boat name: Rotary Rescue
Make: Pacific 22
Length: 6m +
Engine: Mermaid 160
MMSI: 235021725
Join Date: Nov 2003
Posts: 328
water in oil

As quoted ,it could be many a thing but i would stab a guess at, rubber seal for water pipe into adaptor plate plus some corrosion, off power head for that job, and not to bad ajob.
Paul
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Old 02 October 2006, 17:06   #4
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Country: Belgium
Town: Kluizen Ghent
Boat name: Spirit
Make: Ribtec
Length: 6m +
Engine: 90HP Honda
Join Date: Nov 2004
Posts: 28
Thanks Jono and Paul,

We will take of the power head this week-end.
Just ordered the gaskets at the local dealer.
Hope we will find the error.
I will post the results of this examination.
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