Renin is released from kidney in response to
sympathetic stimulation(via β1-receptors)
renal artery hypotension
decreased sodium delivery to the distal tubules of the kidney.
Renin is a proteolytic enzyme which converts circulating angiotensinogen to Angiotensin 1, which is converted by ACE to Angiotensin 2.
So, by blocking ACE..... the level of Renin, Angiotensin 1 & Bradykinin should increase and the level of Angiotensin 2 & Aldosterone should fall.
and also loss of negative feedback of angiotensin 2 on AT receptor located on kidney. so increase in renin and angiotensin 1.