I have a 94 Accord EX Auto 4cyl and for a couple years now it has been having a gradually increasing clank noise. In general it's pretty quiet but has been getting louder and at just a tiny tiny bit above idle it makes a clank noise. I beileve it's a valvetrain prob or adjustment but I'm not sure. Haven't adj. vales yet (prob should) HELP! The Car basically sounds like a diesel. Does anyone no anything about this noise?