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Old 31 January 2005, 02:32   #1
Country: Netherlands
Town: friesland
Boat name: smokkelaer
Make: revenger
Length: 7m +
Engine: 225 Optimax
Join Date: Jan 2005
Posts: 279
Fuel in cranckcase

The oil in my cranckcase is getting more by every ten hours. I've seen in the forum that i'm not the only one thats having this problem.
Are there any situations known where this problem is solved ?
It's a f115 yamaha.


danny is offline   Reply With Quote
Old 31 January 2005, 03:21   #2
Country: UK - England
Town: Nr Faversham, Kent
Boat name: C Rider
Make: Avon
Length: 5m +
Engine: Yam 80
Join Date: Jan 2005
Posts: 479
Have also seen rising oil levels in Honda 50 4str. Think its fuel thats getting in somewhere. Did notice when trailing that we store the engine on the wrong lock. We noticed a little label that said when trimmed up, this side up!!

Searider - The Best 5.4 x Far
Swifty is offline   Reply With Quote
Old 31 January 2005, 13:25   #3
Country: UK - Scotland
Make: HumberOceanOffshore
Length: 8m +
Engine: Volvo KAD300/DPX
Join Date: Oct 2002
Posts: 4,851
I've no idea about that particular engine but fuel in the sump is often caused by the diaphragm of a mechanical fuel pump being perforated and this allows fuel to pass through.
jwalker is offline   Reply With Quote

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