jake91 Posted February 8, 2013 Report Share Posted February 8, 2013 I am making a new thread on this even though I have another, but I figured this would be better so people didn't get sidetracked by the other info posted before Ok about a month ago this noise started but I was never able to pinpoint it. After doing a full tune up which included replacement of most of my pulleys it's the only noise left so now I found it. The ticking is coming from the front valve cover. This starts after the car get to operating temp but then gets loudest after a 15+ mile highway drive. It also only happens in park when revving if it does it underlies it must be a lot quiter as I can't hear it then. Now tonight I notice that if I rev the car to 2k rpm the noise starts but if I hold it there is stops after a second or so. It does the same when I increase the speed to 3k, and so on. Now I'm not much of a mechanic so this is where you come in. What are your thoughts. It seems dependent on oil pressure which makes since why I don't hear it under load or when I hold the rpm steady. Could it be the oil pump? A bad lifter? Worse? Here is a video it's not very noticeable without good speakers.this is it at its loudest. Quote Link to comment Share on other sites More sharing options...
GOT2B GM Posted February 8, 2013 Report Share Posted February 8, 2013 what are you running oil wise, 10w30? My white vert develops a similar lifter noise when up to operating temp when I have 5w30 in it. I switched to 5w40, and the lifter noise is gone. The oil stays a bit thicker at operating temp, allowing the lifter to keep its prime. Quote Link to comment Share on other sites More sharing options...
jake91 Posted February 8, 2013 Author Report Share Posted February 8, 2013 10w-30 synthetic Quote Link to comment Share on other sites More sharing options...
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