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38 Posts
Well, here's one I just can't figure out. When I start up my car on a warm day, but the engine's still cold, it'll make a slight tapping noise for about 30 seconds or so, and then stop completely. It doesn't do it at other times, and the engine hasn't been under too much stress (if any at all.) My oil's fine, rather fresh, new plugs,full coolant, new thermostat...Just about everything! any ideas on what's tapping away in there just to drive me crazy? It doesn't seem to mess with the engine's performance...