2015 Hyundai Sonata 2.4 high pressure fuel pump & cam follower replacement 

i have a video in my channel showing how noisy my engine is. anytime i step on the gas pedal there's a knocking sound coming from the high-pressure fuel pump area. once i replace the cam follower and the high-pressure fuel pump, no more knocking noise. the car starts right up. i drove it and still no knocking noise. i was driving around with that noise for years. i'm very happy with the outcome. hopefully it will also help me with the fuel consumption of the car. i got the fuel pump from ebay and the cam follower from rockauto.com