My 94' 4.6 tbird makes an intermittant sound that I can't figure out. I thought it was lifters, but oil presure is fine and it's not low on oil. I can't understand what it would be because some days it will not ever show up but some days it's so loud, and it sounds just like a diesel engine running. it just makes more of a clank sound than a ticking noise. I was listening to it the other day and it went away while i was under the hood but it still sounds like it's there, just really quiet. To me it sounds like it's coming from the front of the engine, and It sounds like it's more towards the front driver's side. Every time I take it to my mechanic, it won't make the noise. I'm getting frustrated. Any info would be great. I wish I could put a quality sound clip on here but i have nothing to record with!