Lifter tick

[Matt Suffern]

I'm getting a good amount of lifter tick when I start the car cold, and even randomly when it's warm.  I'm using a Mann filter with 4.5 quarts of dino 
10W-30, changed about a week ago after ~3K miles.  The car doesn't burn any oil.

I thought these cars had hydraulic lifters?  Could one be stuck or sticking?  If so, how do I unstick it?  Any BTDTs would be very helpful.  Thanks!

Matt
'86 4kq
Chapel Hill, NC