I M Losing A Lot Of Oil From A Pipe At The Bottom Of My Crank Case Isuzu

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There a pipe coming out of the bottom of my crank case on the left side .in the area of the motor mount .I’m losing a quart every 35 miles and I ran out of oil and pressure at 45 miles . I can’t get anyone to identify it .maybe a case vent ? Or something to do with the oil pump ?.itsxa 2.3 l engine 4 cylinder gasoline truck 1992

Hi, Here’s the service manual for an Isuzu C22NE engine. It dates around the time that you mentioned and it is a 4 cylinder engine, although it is only a 2.2L. Perhaps this will be of no help but you never know. Also here’s how to add images on ifixit Adding images to an existing question