My hyundai accent piston rings need a change how

First you need to clear the codes. If these codes are from before you did the work. The ECM still thinks it's bad. Then if they come up again start with one and work your way through.

There only two possible ways on this, first your valve seals are gone, second your piston rings are gone. The valve rings can be replace without disassembled the head.

not specifically , but just snug it up then turn 1/4 turn

Your synchronization rings are worn out. These rings and responsible for bringing the lay shaft and drive shaft to the same speed so gears can mash easily.

The 2000 model year Accent adopts a different "pressurized" leak check system capable of detecting a 0.020" (0.5 mm) diameter leak (previous Hyundai systems detect a 0.040" [1mm] diameter leak using engine vacuum). The new system uses a Diagnostic Module for Tank Leakage (DM-TL) to close and pressurize the fuel evaporative emissions system. The DM-TL replaces the fuel tank pressure sensor and the canister close valve from previous systems. Other significant changes were made to the system logic, including several new diagnostic trouble codes. It compares the differences between the 2000 model year Accent and previous evaporative emission systems... Que puede ser? Tiene dos opciones. Primero, puede pagar que un tecnico diaga el problema (exactamente) o sigue, secudariamente, su adivnaza.

BLOWN HEAD GASKET OR BROKE PISTON RINGS WHILE INSTALLING THEM.

buy a Haynes manual......

The valve stem oil seals sound like theyre worn and oil is getting past the vlaves and been burnt in the combustion chamber,once the valve stem oil seals are replaced it should cure your problem as with only 57k kms the piston rings shouldnt be worn yet.

i would go to a dealer and get it they go by vin #s thats your best bet/ Please rate my response thank you very much