Fuel problems are one of the most common reasons for an engine to stop or run badly. Fuel has to get from the tank, through the lines, filters and pump, to the carburettor or injectors, and it has to be clean, fresh fuel when it gets there. Start with the fuel itself, then work along the fuel system towards the engine.
PHOTO Dangar Marine Boat Guide
Out of fuel, stale fuel or water in the fuel
Open ›Problems with the fuel in the tank: running out, stale fuel, water in the fuel, a closed breather or forgetting the two-stroke oil.
Fuel lines, filters and primer bulbs
Open ›Fitting a water separating fuel filter, replacing perished fuel lines, and the primer bulb.
Testing and repairing fuel pumps
Open ›Testing a fuel pump's valves and diaphragm with pressure and vacuum, and servicing it.
Cleaning, repairing and synchronising carburettors
Open ›Carburettors clog with dirt, water and varnish from old fuel. Cleaning them, fitting a repair kit and synchronising them.
Renko's diesel tanks, filters and injectors
Open ›The diesel fuel system on Renko, my steel trawler: tanks, filters, a fuel gauge, the fuel pump and the injectors.
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