I MOVE IT OUT TO THE DRIVE, QUIET NOW.
A LIFTER ACTING UP?

 

Lets hope thats all it is.
I think I would still get the oil PSI tested just to be sure.

 

I wouldn't even want to to start it unless it was to verify your oil pressure at all 4 points, cold idle, cold at 2000 RPM's warm idle and warm at 2000 RPM's.
Then have the pan pulled for a full inspection.

 

I POSTED AN OIL LIGHT PROBLEM BEFORE. THE LIGHT WOULD FLICKER AT LOW IDLE. THE DEALER PULLED THE OIL PAN CLEANED IT AND SAID THE PRESURE WAS BACK IN RANGE. I SWITCHED TO SYNTHETIC OIL AND THE OIL LIGHT HAS NOT EVEN FLICKERED. THAT WAS 7-8K AGO

 

TOWED TO SHOP TODAY. OIL PRESSURE GOOD, BUT IS NOT TAPPING. WILL KEEP TOMORROW TO RUN IT AND SEE IF THE TAPPING RETURNS.

 

The flickering oil light at idle and the tapping noise that you are now getting is the typical warning signes that your oil pump is going out.
Sorry about your luck. You can thank Ford for this.
The dealer should have told you when it was in for the flickering oil light.

 

HE CAN NOT REPRODUCE THE TAPPING NOISE.
WHAT DO YOU DO?
IGNORE TILL IT HAPPENS AGAIN?
TAKE ENGINE APART?

 

MECHANIC DID NOT GET IT TO TAP. DID DRAIN ABOUT A QUART OF OIL BECAUSE IT WAS OVERFILLED.
20 MILE DRIVE HOME, GOT LIGHT TAPPING AT MILE 19?

 

Consider flushing the engine with 6 quarts of ATF, sometime there is some sludge that will cause lifter and or rocker noise.

 

AGAIN THIS AM , QUITE AT START THE TAPPING RETURNSWHEN UP TO OPERATING TEMP.