My 95 chevy loses spark when i press the gas hard. I put a spark checker on it and it looks fine when ideling and truck runs fine when ideling. As soon as i press the gas hard spark dies and engine backfires and wants to stall sometimes does stall. Have replaced alot getting stumped. Any ideas

 

Did you check the ICM?

 

Replaced it yesterday it was my problem it was one of the last things i checked because it was replaced about 2 years ago but that was the problem