Many moons ago when I was much younger, I worked on a Canadian Deep Sea Vessel, the Western Hemlock. Yes, a Canadian crewed ship! Anyway, during a voyage one of the generators just shut down. The next one in line started up and went on load. This was all accomplished through the magic of those little black boxes, back then they were black and sealed. No working parts to be found. Anyway, I digress, the C/E happened to be in the E/R at the time and we both went to investigate why the engine decided to shut down. While we were examining this engine, the generator that was running shut down and our 3rd and last generator started and went on line. I can tell you that the urgency in finding out what was happening is becoming more apparent. We split the flange on the fuel supply line to the generator and discovered no fuel flowing. The header tank was full to bursting, so what gives. The C/E and I began following the line to the header tank, it meandered all over the engine room and then went under blown on insulation along a bulkhead. We began cutting the insulation off and continued following this line when we came across a bypass valve and then an in line strainer, all encompassed under a thick layer of blown insulation. As soon as we openned the bypass valve, fuel flowed.
I just thought I would post this funny story to let you know that things can be fixed by just being methodical, who would have thought a strainer would be insulated!!!!