Ticking Noise
 

2013 Ford F-150 XLT CREW CAB 4X4 3.5L ECO BOOST

I just removed and cleaned the Throttle Body
Preformed a Idle Reset
and I'm hearing a ticking sound
not very loud, but I don't recall hearing it before this work.

I've used a piece of hose to locate the sound and it's coming from the little aluminum box in line with the High Pressure Fuel Pump.
Nothing from the valve covers...
Any insights? Thank you!
https://cimg4.ibsrv.net/gimg/www.f15...f0aaeb225a.jpg