My D16Z6 is making a ticking noise. I want to say it's light but I can hear it with the hood down. I hear it at idle, but if I give it just a little gas it goes away. I'm thinking it might be a injector. I just changed the oil. I might go get a different filter. It's a fram and it didn't go on that great. It seemed a little tighter then normal. Not really tight though.