hi group!
folks! pls help me with this one - so i'm starting up the jeep this evening first time in the day (meaning it's dead cold) some 3 secs after startup i hear this single ... 'ping' (or whatever the word is) a similar sound would be produced when a large nut (say 1/2-in screw size) is dropped onto a metal surface i thought to myself 'what the hell was that' i glanced over all the gages: eng temp, volts, fuel level & oil press (as i always do after startup) i noticed the oil pressure to be lower than normal (showing about 53#, as opposed to normal 75#) i revved the engine but ... the oil pressure needle wouldn't move a tiny bit! so i'm thinking the oil filter blew, or the pump, or something else, but what? and would the sound i heard suggest something dropped into the oil pan? what? i shut the engine and didn't touch it since where am i looking to help figure these mysteries?
oil 10w30 filter fram ph16 ambient temp 32-F
91 wrangler, 4.0-Lany input appreciated many thanks, pete