6VD1 advice needed for low compression (expert pls)

[pSquared]

Hopefully a 6VD1 3.2 DOHC guru out there can spare some advice.

'92 Trooper w/just at 100K on well maintained, babied motor. Yet, told wouldn't pass CA emissions due to burned valve(s) #2 cyl, causing low to no compression. Which I went home and confirmed.

I find that a bit unusual that a car w/only 100k miles these days would burn
valve(s), but I guess it's possible.

My question, how to approach a fix. I know it's a fairly complex engine, but got no choice or $$, so gotta do it myself. Confident I can, done worse. But
wondering which way to go.

Pull the head & find a replacement? Valve job? Better yet, what could cause this? Lifter fail?

Just looking for some clue or direction.

Thanks in advance.

p2