Chevrolet 1500 Engine Hesitate

Recently My Truck Started Running Ragged, So I Changed Plus, Wires, Distributor, Fuel Filter, Air Filter, And Gave It A Gas Treatment...

At Idle In Park Or Drive, Cold Or Hot, The Engine Will Stumble And Intermittently Misfire. The Engine Is A Gm Dot R Crate Motor With About...

I Changed The Egr Valve And Map Sensor In My Truck. When I Hook Up The Vacuum Lines Properly, There Is A Huge Throttle Delay At Low...