Re: [Amel Yacht Owners] Turbocharger & exhaust sm

Bill & Judy Rouse <yahoogroups@...>


I assume yours in the Yanmar 100hp. I have cleaned diesel residue from BeBe since we owned her. I believe that you will get some smudge no matter what.

It is true that a fouled AutoProp will cause unburt fuel to pass thru the exhaust as smoke, adding to the smudge problem. A fouled AutoProp bites too much water and places to great of a load on the engine, which causes the captain to give the engine too much throttle, resulting in unburnt fuel.

Before you tell a mechanic to rebuild a turbo, you might have a trusted and qualified mechanic adjust the valves and remove the injector nozzles and send them for cleaning and testing. If this has never been done to 477, it is likely due.

Bill Rouse
BeBe Amel 53 #387
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On Aug 4, 2015 3:02 AM, "sailor63109@... [amelyachtowners]" <amelyachtowners@...> wrote:

After a good bit of motoring (about 12 hours) we arrived in Brunswick, GA with a black smudge on the gelcoat at the exhaust port in the hull.  It wasn't extreme, but it was a good bit of soot extending back 4 feet from the exhaust port.  I did notice exhaust smell in the cockpit when at the aft/port corner.

First, is the smudge normal?  Or is it a sign of a diesel engine not completely burning the fuel?  I did have the tank cleaned prior to leaving so the fuel should be good.  I just cleaned the Racor's and afterward ran the engine up to 2,000 rpm, in gear, and got a blast of smoke at about 1,800 rpm that only lasted for 15 seconds or so.

Second, has anyone had to replace or overhaul their turbocharger?  I've read that it can be the cause of excessive smoke at the 1,800 to 2,000 rpm level.

Thanks in advance for any thoughts!
Duane & Peg
W anderer, SM#477

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