Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
my name is Marvin, and I have this vehicle here which has a long story but short one is engine was replaced with a reman and every see to be working fine except on idle engine seems to be running a bit rough and it throws P0301 on idle after 30 mins of idle, I have scope the injector and I would like some guidance on analyzing the wave form, I’m new into scoping and I don’t have nobody to teach me so I follow your videos and learn as much as I can. I do appreciate what you do to the community.