I recently purchased my Catalina 380, and have been doing maintenance and a few minor upgrades. Tried to take her out for a sail last weekend, and the engine died in the channel. Had to be towed back to dock.
Today I went to troubleshoot the problem and found black sludge where clean diesel should be found. The first picture is the fuel I drained from the primary filter.
Since I could not see into the fuel separator at all, I removed it and cleaned it. The second picture is the plastic bowl in the bottom of the separator after I drained it, and the forth is after I cleaned it.
The third picture is a reference picture for what diesel SHOULD look like.
After all of this the engine started right up.