NHTSA Complaint #11481104 — 2011 HYUNDAI SONATA

I own a 2011 Hyundai sonata limited edition 2.4 my sonata is making a horrible knocking sound from the engine in 2019 Hyundai dealership installed the knock sensor which is default my sonata is knocking no engine light has come on to make me aware of the knock the problem has progressively gotton worse I can hear the knock now is why I'm aware of this my sonata has a salvaged title also is one of the many built in Alabama the engine recall campaign says metal matalic shavings are stuck in oil ports which could ruin rod bearings crankshaft and other internal components I took my car to Hyundai dealership they ran a mpt test on rod bearing and ignoring the faulty knock sensor that they installed dealership said the bearing test passed but something else in my engine is knocking really bad and still ignored the faulty knock sensor even after telling them about it mind you the engine light is still not on although the engine is knocking all recalls for this vehicle are up to date Hyundai dealership has denied me of any help with my sonata because it has a salvaged title but didn't deny me in 2019 when knock sensor was installed my sonata has been maintained oil change tune up ECT why am I being denied of this recall they was aware of the engine recall campaign or would have never ran a rod bearing test so why am I being denied my sonata stalled on the freeway in a lemp mode this could have caused serious injuries due to Hyundai dealership not fixing the problem how and why are they able to do this if a vehicle is recalled no matter what needs to be fixed