1990 Buick Skylark Q&A

1990 Buick Skylark Question: replaced fuel pump, but now it backfires an won't idle

it ran fine for about 5 to 10 minutes then started this problem, also replaced the fuel pressure regulator, but same thing, it did help. why is it doing this, any ideas? -
Answer 1
Did this ever get resolved, and if so, what was the problem? Thanks! -