Diesel Generator Fuel Injectors – Problems?

Diesel generator fuel injectors need two vital ingredients – clean diesel fuel and oxygen – supplied without interruption to the engine in the correct ratio. Of course, fuel injectors play a fundamental role in this process, receiving diesel from the fuel injection pump, then atomising the diesel fuel into a fine mist to enable the engine to function cleanly and efficiently. Be that as it may, there are a number of potential issues that can disrupt the optimal performance of the injectors. These include:

Generator Fuel Injector Leaks

If injectors are leaking, you may notice:

  • a strong smell of diesel in the vicinity of the generator
  • the generator is difficult to start
  • fuel consumption suddenly increases
  • fire!

Solution- Any of the above can occur with Diesel generator fuel injectors, especially when an injector cracks or O-ring seals become hard and brittle with age.

Multiple issues occur especially with Aging Injectors

  • Get your local engineer to use Thermal Imaging to identify any inject cracks.
  • Replace the O-rings

Generator hunting or struggling when running- What’s the problem?

The fuel atomising spray is disrupted by deposits gradually accumulating. Found within the injector tips.

Resulting in a build-up of burnt fuel or fuel additive residue in the injectors. Each time the generator shuts down the deposits remain. Including rust particles that have travelled through the system to the injectors. These obstructions will either disrupt the spray or, if left unchecked, block the injector completely, preventing fuel from getting into the engine.

Check for:

  • Engine misfiring on start up (audible issue you’ll hear this)
  • Difficulty in starting the generator
  • White smoke
  • Dirty fuel or diluted fuel (cheap diesel from a non registered supplier)

Solution –Take out the injectors and thoroughly clean them before replacing them in the engine

Generator Fuel Injector Failure

Elements within the injector will wear or generally fail over time, leading to various problems. These may include a valve that won’t close and therefore leaks fuel, or a valve that won’t open and therefore won’t supply fuel to the engine.

Solution –Take out the injectors and thoroughly clean them before replacing them in the engine

Finally, if that doesn’t improve the performance of the engine you’ll require brand NEW Injectors

Regular servicing regime-If the above issues are not addressed through regular preventative maintenance, then the generator’s performance and efficiency will be reduced. Power Continuity Systems offer a complete service and maintenance package with each generator installation that will ensure that the fuel injectors are kept in good working order.

Call PowerContinuity on 0845 055 8455

For all Generator Servicing

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