Yeah if the timing chain is loose you will want to replace the guides, the chain, the tensioner, and the timing chain cover, if it looks worn at all. My '93 was making those noises, and I let it go a little too long. I ended up with a lot of chocolate milk in my oil pan, and was using my highly modified (big pain to drive on the road) '73 CJ-5 as my daily driver for a while, not worth the procrastination.