Got a 2008 EOS 2.oT engine. Once car hit roughly 80K, when starting dies noise like engine is totally out of timing and sort of like sneezing?, Metal like noises. Once started, instantly, engine sounds fine, with a normal clicking noise. Now engine has 160k still running great, still does same stating, (like sneezing) starts perfect, idles, but now sounds like a diesel engine, In a very low pitch, clok, clok clok. Any suggestions?