Assertion: diesel's engine | /r/HasAspect | a spill return system
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Source sentences:
text: Also, most engines have a spill return system, by which any excess fuel from the injector pump and injectors is returned to the fuel tank.
text: Once the diesel motor is started it may continue to operate at temperatures below the CFPP — most engines have a spill return system, by which any excess fuel from the injector pump and injectors is returned to the fuel tank.