Renko, my steel trawler, has a Detroit Diesel 4-71 and steel diesel tanks built into the hull. These videos cover repairing a leaking tank, fitting dual fuel filters, making a fuel gauge, and rebuilding the engine's fuel pump and injectors.
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A leaking diesel tank in a steel hull
Open ›Diesel ran out of my steel hull from a leaking fuel tank while I was cutting off the rubbing strip. I drain the tank, open the inspection hatch and clean it out ready for welding.
Installing a water separating fuel filter
Open ›Outboards have a small internal fuel filter, so an external water separating filter with a clear bowl keeps dirt and water out. I mount one without drilling the hull, seal the fittings and prime the system.
Making an Arduino-based fuel gauge
Open ›A diesel tank with no gauge can be read from the pressure at its bottom. I wire a pressure sensor to an Arduino with an LCD shield, test it on water and show a percentage.
Alternator installation and fuel supply fix
Open ›Replacing a corroded alternator on a Detroit diesel after the engine bay flooded. I line up the pulley, wire it straight to the battery and bypass the fuel filters until new ones arrive.
Rebuilding a Detroit Diesel fuel pump
Open ›The fuel pump, blower and governor on a Detroit Diesel 4-71 get a full rebuild before the engine's first start, including replacing a cracked blower end plate, recessing seals and setting rotor clearances with feeler gauges.
Building, testing and replacing diesel injectors
Open ›Detroit Diesel unit injectors pump fuel to injection pressure and spray it into the cylinder. We build and pressure test a set, timing the rack, then fit N50 injectors to Renko.
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