I am currently chase a sluggish engine problem that started with a fuel pump failure. 2004 VP 8.1Gxi and I've got got 41 psi at the rail at 2000 rpm and I've completed 90% of the fuel system diagnostic in the manual.
To finish up I need an injector tester which I don't have. But I do have a Techmate Pro that has the ability to do a power balance test that, if I understand it correctly, would point me towards a faulty injector or coil pack.
My problem is when I select the test, rev the motor between 1000-2000rpm it only allows me to select A or H. It says that it's disabling for 5 seconds. I notice no change and the screen doesn't stay on testing screen but for a second and goes back to the screen to select A or H.
I really need some suplimental literature for this because the book is vague. I would think I'd be able to select A,B,C... One letter per cylinder, not A or H only. And it still doesn't seems to do anything. Can someone point me in the right direction?
To finish up I need an injector tester which I don't have. But I do have a Techmate Pro that has the ability to do a power balance test that, if I understand it correctly, would point me towards a faulty injector or coil pack.
My problem is when I select the test, rev the motor between 1000-2000rpm it only allows me to select A or H. It says that it's disabling for 5 seconds. I notice no change and the screen doesn't stay on testing screen but for a second and goes back to the screen to select A or H.
I really need some suplimental literature for this because the book is vague. I would think I'd be able to select A,B,C... One letter per cylinder, not A or H only. And it still doesn't seems to do anything. Can someone point me in the right direction?