On my 1997 Chevrolet Blazer S10 4.3L the left bank no 2 sensor not heating

Question

On my 1997 Chevrolet Blazer S10 4.3L the left bank no 2 sensor is not heating, rough idle, hard start

Answer 1

Rough idle no start, you need to do the basic such as compression test , for the rough idle ,  fuel pressure  has to be known , The mechanical inspection has to be done,