oil leak cummins 12 valve driver side
 

Morning...
Ive got a 98 12 valve manual transmission.
Ive got oil leaking from the driver side of the motor. Its not an urgent fast leak. But it leaves a tiny puddle (not a deep or big one) maybe like a small pancake with wet middle size of a quarter ..overnight.

Its been going on for a while and is sprayed up all over the bottom of the motor and wherever it is coming from is hidden very well as i can't seem to locate it. Working on this specific motor is new to me since i just bought the truck recently.

From what i can see the oil is coming somewhere low on the driver side of the engine since it doesn't get up near the injection pump.

Just wondering if there is any obvious or common places. Ive considered...power steering vacuum pump assembly but doesn't seem as wet and dirty from oil there. Its there but the oil is dirty and grimy not so much wet. (spray from driving)

The timing gear housing gasket seems ok as well but is cover with dirty grimy oil not really wet. It is kdp fixed and no cracks.

I about to replace the power stearing pump since its shot and does not get enough pressure unless i throttle it which makes me look like a dooshbag pulling into parking spaces since I'm straight piped and fuels turned up. So I'm actually doing the power steering pump today.

Any thoughts to brainstorm here would be greatly appreciated.

Thanks for your time.

Is it leaking from the tappet cover behind the injection pump?