Loud Engine Noise problems of the 2018 Hyundai Elantra

My 2018 elentra value edition started knocking in August of 2018. I called the dealership in chillicothe OH and they told me it was fine to drive and to bring it in the following Monday. They said I should plan to wait while they looked at it and that I would be driving it home that day. . I drove about 20 miles and the engine made a loud noise and died. They never told me what caused the failure but there was oil and chunks of aluminum all over the road. They replaced the engine under the warranty. The car had 33,000 miles at that time. Then on December 23 of 2020 my engine started making the same exact noise. The car is now out of warranty with 144,000 miles on it. I removed the oil pan to find the problem. It was the number 3 cylinder. The connecting rod bearing was bad. I cleaned the journal on the crankshaft and measured it with plastigauge. It was 0. 001" over the tolerance. I installed new bearing on all four rods in hopes that 0. 001" out of tolerance wouldn't be to much. Every bearing on the rod side was worn out and the coating gone. The bearings on the bottom "cap" side were in decent shape except for the number 3 cylinder which was destroyed. After the engine had started and I had drove for around 5 miles it started knocking again. The journal on the crankshaft is to worn for the bearing to work. I have an engine ordered and I am replacing it myself. I have several years of schooling in auto mechanics and have grown up in a garage, I understand the importance of maintenance and never missed any on my car. It had every oil change with synthetic oil, oil filter changed every time, fluid levels were checked on a regular basis as was the air filter. The car isn't driven hard, there is no reason for the issues I've had other then defective parts or design of the engine in this car.

Got my oil changed 9/10/2020 and it has not ran every since 9/10/20 want stay running check engine light on making a loud noise I have to keep giving it gas to keepit running. So. My stepdad was like is there any oil in it I told him I had just had it changed not even month ago well he check it and it's 2 and half quarts low but how is that it's not even been running in two weeks and I have no leaks smh enj.

My Hyundai Elantra brake pedal flutters when I press it to stop giving off a loud noise and doesn't allow me to brake at times. I've taken it to the dealer but they say no issues have been found. What can I do. I'm concerned the prior recall on the the 2017. Here is the link. . Read more...