Hyundai Sonata LF: Engine Control System / Injector Specifications

Injector Description and Operation

Description The GDI injector is similar to a standard injector, but sprays fuel at a much higher pressure directly into the combustion chamber and has a swirl disc to get the fuel swirling as it exits the nozzle...

Injector Troubleshooting

Signal Waveform The three waveforms below are taken from the #1 and #4 injectors. The top waveform is from the high side (feed side) of the #1 and #4 injectors, while the middle waveform is from the low side (ground side) of the #1 injector and the bottom waveform is from the low side of the #4 injector...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Coolant Repair procedures

Replacement And Air Bleeding     Never remove the radiator cap when the engine is hot. Serious scalding could be caused by hot fluid under high pressure escaping from the radiator.     When pouring engine coolant, be sure to shut the relay box lid and not to let coolant spill on the electrical parts or the paint...

Hyundai Sonata LF 2014-2019 Service Manual: Components and Components Location

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