Hi all
Awhile since i posted on the forum but i find i need a reality check this is of a screen print of a merc petrol engine injector voltage and current for injector 2
trace A is injector 3 voltage
trace B is injector 2 voltage
trace D is current for injector 2
voltage measurements took at ecu plug back probed current taken with pico 30 amp inductive amp clamp http://i1015.photobucket.com/albums/af2 ... inj2_1.png
all looks as expected
change amp clamp to injector 3 and then I get this trace A is still injector3 voltage B is still Injector 2 there is not any possibility im not on the same wire
All the other injectors current /voltage are as expected all amp measurements taken in the same place but the current and voltage are out off phase on injector 3 or could my pico be at fault(really don't think so)
I had to walk away this afternoon as I could not get my head round it
Any light
Thanks Andrew
Last edited by andrewbishop66 on Sun Mar 18, 2018 8:24 pm, edited 1 time in total.
andrewbishop66 wrote:Hi all
Awhile since i posted on the forum but i find i need a reality check this is of a screen print of a merc petrol engine injector voltage and current for injector 2
trace A is injector 3 voltage
trace B is injector 2 voltage
trace D is current for injector 2
voltage measurements took at ecu plug back probed current taken with pico 30 amp inductive amp clamp http://i1015.photobucket.com/albums/af2 ... inj2_1.png
all looks as expected
change amp clamp to injector 3 and then I get this trace A is still injector3 voltage B is still Injector 2 there is not any possibility im not on the same wire
All the other injectors current /voltage are as expected all amp measurements taken in the same place but the current and voltage are out off phase on injector 3 or could my pico be at fault(really don't think so)
I had to walk away this afternoon as I could not get my head round it