I have put in new tank, fuse, relay and fuel pump in my 1991 4.3 4x4 tahoe blazer. Ran great for 2,3 months then ran a little rough. went to store one day and had to have it towed home. Will not start. no gas to carb. anything elese I can check?

What is your question?

There was no odd noise. ran rough and I thought to change plugs. Quit running before I could. noticed no gas to carb. starts when I put gas in carb directly and runs until used up.

What makes this problem better or worse?

Nothing

How long has your 1991 Chevrolet S10 Blazer had this problem?

about a month