Carver Owners Forum

I recently purchased a 2002 Carver 570 Voyager with Volvo Penta Diesels TAMD74EDC 480 HP each

During the initial Sea Trial, there was Black Soot covering the back of boat, swim step and cockpit area.
We assumed it was due to the engine surveyor pushing the engines to 2600 rpm's.

Recently, we made a 4 hour trip to channel islands, cruising at 1800 rpm's and found the Black Soot was again covering the back of boat.

Any suggestions what would be the cause?

John Bath

Black soot means unburned fuel
Is the bottom of the boat clean?
What is the wot rpm spec and what is your actual wot?
How old is the fuel?

Thanks Waybomb
Bottom paint is new this June 2025.
wot rpm specis 2600 rpm, actual is 2500 rpm
600 gallons of new fuel added August 2025 to 100 gallons existing.

John

Any idea why you can't get 2600?
Injectors?

Injectors, air filter, turbo, wastegate....