Hydraulic valve lifters??

Hello,

I have bought last Saturday a second lebaron (coupe 1989).
Exceptional good condition outside and inside, almost like new.

When the engine is cold i hear a bit of ticking. I suspect the valves.
It's a 2.5 non turbo, has this engine Hydraulic valve lifters and there is no way to adjust?
Or don't worry just drive?
According the dash it has only 55.000 miles done, the engine looks also this way.

Thanks.

greetings from the Netherlands
Paul