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Oil residue on top of water (4588 1988)
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It could be lube oil of it could be fuel hard to tell unless I am there and can see how it spreads and reacts when released.
With that said it could be as simple as a 'blob' f exhaust residue spilling out all at one time.
It takes very little amount of fuel or oil to make a sheen , les than a teaspoon for sure so fining these are a bit of a hunt.
You say you have no losses or contamination in the lube oil.
Questions for you to get you thinking....
- how much oil residue is in the turbo's turbine housing and the air cleaner
- what do the inspection plates look like on the intercoolers
- when were the injectors last checked
- does it only do this when its cold and the boat has only run at lower speeds
That's a start anyway - hope it helps
Northport NY
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"Jim Gandee" post=828817 wrote:
Just notice this while untying my boat at the marina this weekend coming from the starboard engine.
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"smitty477" post=828689 wrote:
It could be lube oil of it could be fuel hard to tell unless I am there and can see how it spreads and reacts when released.
With that said it could be as simple as a 'blob' f exhaust residue spilling out all at one time.
It takes very little amount of fuel or oil to make a sheen , les than a teaspoon for sure so fining these are a bit of a hunt.
You say you have no losses or contamination in the lube oil.
Questions for you to get you thinking....
- how much oil residue is in the turbo's turbine housing and the air cleaner
- what do the inspection plates look like on the intercoolers
- when were the injectors last checked
- does it only do this when its cold and the boat has only run at lower speeds
That's a start anyway - hope it helps
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Originally posted by fjfool View PostNo idea if you've resolved this, but does that engine smoke more than the other ? I would be suspect of injectors not firing properly, especially with the lack of maintenance you mentioned. Where are you located ?
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