i got a 2002 neon its got 90.000 kms om the motor.. its in great shape well cared for.. but i notice when it idols it makes an knocking sound. when its reved up it stops.. i love my car but whats that noise??
Hey could be your lifters starting to stick and get worn or you might need to change you pcv filter. And change the oil that might be low and worn out.