Low engine speed during high pressure test

[Rounded_nut]

(02-09-2018 )Unilevers Wrote:  basically all the tool is is a cap off for the rail to eliminate the fuel connector and injector for 1 cylinder. You just cap one off and run it and see if the return flow gets less/stops bypassing. then put on 2 of the block offs then 3 and so forth until you find the bad injector/tube etc.

So I've decided I'll get the block offs because this probably won't be the last time I have injector issues, but I wanted to know, when starting and running the pressure up, should I also use the cylinder shut off in insite to prevent the injectors that are isolated from moving? Without the fuel to lubricate the needle and crud I worry about any damage from running it dry.