More Than Just a Moody 376 Fuel Tank Replacement
My Moody 376 fuel tank replacement became one of the biggest repair jobs I faced aboard HOBO1. What began as contaminated fuel eventually revealed a badly corroded steel tank that had to come out.What started as a fuel problem aboard Hobo 1 turned into one of the biggest jobs I’ve tackled on the boat. Buried beneath the saloon was the original steel fuel tank — a huge, heavy lump of steel that had been sitting there for decades. Once I finally got access to it, the amount of corrosion underneath told the story. This tank had to come out.
Finding the Problem
The first signs of trouble came from the fuel system. I was having problems with contaminated fuel, and once I started investigating properly, it became clear that the original tank needed serious attention. Getting to it meant opening up the saloon cabinetry and exposing a tank that had probably not seen daylight in decades.
What Was Hiding Underneath
Once I started getting the tank out, the real condition became obvious. Years of moisture had been trapped underneath it, and there was a huge accumulation of rust and corrosion hidden from view. From above, the tank looked old but reasonably solid. Underneath was a very different story.
Getting the Tank Out
Removing it was another job altogether. The tank was far too large to simply lift out through the companionway, and there was very little room to work around it. I disconnected the fuel lines and fittings, but one pipe elbow left me no choice — I had to cut it to free the tank. After a lot of manoeuvring, lifting and wrestling with a very heavy piece of steel, I finally managed to get it up through the companionway and out into the cockpit.
Building the Replacement Tank
With the old tank finally out, I could have a replacement fabricated to fit the same space. The new tank was built from steel, following the dimensions of the original but giving me a completely fresh start. After seeing what decades of hidden corrosion had done to the old one, protecting the replacement properly was just as important as getting the size and fittings right.
Installing the New Tank
Getting the new tank back into position was another challenge. Space aboard a yacht is never generous, and the tank had to fit back into the same tight area beside the engine. Once it was positioned correctly, I could reconnect the fuel lines, filler, breather and return connections and start putting the saloon back together.
More Than Just a Fuel Tank
While the fuel tank was the main job, having everything opened up gave me the opportunity to tackle other work around the engine at the same time. With access normally so restricted aboard Hobo 1, it made sense to deal with anything that needed attention before closing the area back up.
Running Into the Same Problem?
If you own a Moody 376 and find yourself facing a similar fuel tank problem, don’t hesitate to get in touch through my Contact page. I’ve been through the job from start to finish, and if my experience can save you some time, money or frustration, I’ll be happy to help where I can.