Then he can pull the intake manifold and swap the number one injector with the number two or something and then see if the misfire moves.

Maybe also should run a compression test to verify the engines state.

Former owner of '99 CSVT - Silver #222/2760 356/334 wHP/TQ at 10psi on pump gas! See My Mods '05 Volvo S40 Turbo 5 AWD with 6spd, Passion Red '06 Mazda5 Touring, 5spd,MTX, Black