To answer your question...you MAY be able to pull it out, take the lifter apart and clean it and maybe it won't make noise.
That's the best answer there is. You can try a new lifter.
The biggest issue I've found with these lifters is the thinner oils. I know all the hydraulic roller lifter lovers are now claiming if you use the "correct" SUS oil, or CsT oil, whichever measure they use, everything will be unicorns and rainbows.
I'm saying I don't buy it. I know from dyno testing we could never make any hydraulic lifter engine happy with thin oils. If I was doing another hydraulic lifter engine, it would be set up to use 20w50 oil, and even though I know that sucks, it is what it is.
To watch the engine on the dyno, and look at the numbers from the dyno when the lifter is struggling to stay pumped up is amazing. I didn't figure it out on my own. It took some phone time and brain power to learn what happens.
They (they being the gurus who love to sell the idea that a hydraulic lifters internals are happy with cam lobes that are much faster than they were 15-20 years ago if you use a thin oil...I say they are NOT and I say they'd rather have a heavier grad oil) say the "new" lifters have might tighter internal clearances than ever before and this means that thin oil is the answer. I say bull.
I also say one other issue I've found using hydraulic lifters (especially hydraulic roller lifters where the lobes are pretty fast) is low oil pressure.
Low oil pressure is a power and RPM killer with hydraulic lifters. So is volume, but I'm not going there.
You didn't say what cam you have, so we have no idea what lobes you are using. You didn't say what oil you use, it's grade and how much idle oil pressure you have.
That's the best I have.