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Message: <blockquote data-quote="Black18ltawd" data-source="post: 25109" data-attributes="member: 9282"><p>Just started the same problem yesterday, not vacuum pump like I hoped everything seems tight under valve cover, extreme blow by though, 120k noise came out of no where for no obvious reason. Started it this morning, 20 degrees out, sounds like a diesel running and a lot more distinct tick or knock. Long story but anyone get anywhere with this problem? Haven’t let it warm up today to see what it sounds like.</p></blockquote><p></p>