How do I fix a p0300 misfire on my 97 s10 4.3l?

What is your question?

My 97 s10 4.3l is throwing a p0300 random misfire but it has all new spark plugs, wires, distributer, distributer capand fuel pump. The truck idles a little rough and when the rpm is to low and you give it gas it backfires. But when rpm is high and I'm giving some gas it runs smothley. What can my problem be?

What makes this problem better or worse?

Worse when rpm is low.

How long has your 1997 Chevrolet S10 had this problem?

1 week