Specter13 0 Report post Posted November 12, 2011 just this week my 89 m20b25 started making a really loud rattle coming from around the tappet cover at 1000 to 1500 rpm other than then it sounds fine. what the hell is going on? Quote Share this post Link to post Share on other sites
pjay 8 Report post Posted November 12, 2011 I had something similar which leaded to a snapped/cracked rocker. Get the head off or take it somewhere and take a look before it gets worse. Quote Share this post Link to post Share on other sites
