Originally Posted by APLPIX
What oil have you been using? If its cheap stuff, sludge can build up and restrict flow through the oil pump making less oil feed the valvetrain. It sounds like valve knock on idle and piston slap/rod knock when you gas it.
not sure, it's my parents car. they usually are a little late on oil changes not bad, but a mechanic does it, and my dad just got the oil at a gas station