Wiggo
New member
AFAIK...
Don't know yet, sadly. That's number 2 piston, and it's melted...
Excessive oil consumption while out on charter, then a sudden loss of power. Other than that, nothing. Still waiting for more news.
Looks like a valve has imbedded itself into the piston crown...
Those are the valve clearance cut outs machined into piston. Of note are two critical features features of abnormal combustion caused by malfunctioning injector.
#1 Typically gnawed off edge of piston crown.
#2 Moonscape effect on less damaged part of the crown with start of combustion gnawing on this edge.
#3 No damage whatsoever in combustion chamber.
Typical of not fit for purpose fuel filtration.
Unless fuel filtration system gets the once over, always the potential for repeat failure.
oThose are the valve clearance cut outs machined into piston. Of note are two critical features features of abnormal combustion caused by malfunctioning injector.
#1 Typically gnawed off edge of piston crown.
#2 Moonscape effect on less damaged part of the crown with start of combustion gnawing on this edge.
#3 No damage whatsoever in combustion chamber.
Typical of not fit for purpose fuel filtration.
Unless fuel filtration system gets the once over, always the potential for repeat failure.
o
I'm the engineer on this one LS
Boat has Racor FG500 with volvos label on it and standard single filter which you may know as Baldwin BF988.
Engin started and ran fine but filler cap did low orbit test as you like to describe. Head off yesterday afternoon( yes I do sometime work Sunday's) boats moored two up from mine so no excuse for being late !!.
Let's wait and see what pump shop says about nozzles and Bosch pump.
This set up is standard throughout most pleasure boats, so why will it not work , water should stay in Racor bowl so what do you suggest as not only do fuel pump and injection problems cost but this is the result of this failure which will now cost.
Today I took call from Atlantic 42 owner with 63p motors saying his boats stopped and his pre filters are full of diesel bug jelly, he asked what to treat it, I suggested he have his tanks cleaned but access is non existent without extensive internal furniture removal, he spoke to tank cleaning co who said treat it with suitable chemical and go out and burn what's in the tank, he didn't even think that the engines fine filters would need changing.
Personally I'd want to dump the whole tanks contents, clean out every pipe and filter housing, test injectors a must before it's too late and his Pistons look like wiggos number 2.
I do wonder if these tank cleaning companies know about the results as I've seen so many boats just breed the bug straight after a clean, to me there is more to this bug than we really know, so what do we use?
Soltron, marine 16 etc? Anyone had the bug and had a happy outcome from a pure treatment without a full tank clean?
What filter set up would you suggest will be the minimum requirement LS and a standard pleasure boat?
Paul,
From comments made by Wiggo seems like vessel has been a slightly troubled child.
Despite what the data sheet says I would never use FG500 in front of engine with potential for developing more than 100 hp, however that is a personal view and my mail box was swamped last time I said it.
Let me try some lateral thought. Is there enough room on the engine to upgrade the BF988 with BF1221? This change would improve 'last chance' potential of on engine filtration.
How about we consider a remote filter head and make the FG500 part of a two stage system and improve agglomeration properties upstream of last chance filter?
These mods would improve the system without embarking on expensive upgrades.
Good luck.