Originally Posted by fmfpunk
What happens if the pump diode is bad? How do you know? Is it bad to run it like that?
IF the diode is 'shorted': the pump doesn't work at all, just draws a lot of current.
IF the diode is gone/open this will normally give extra strong sparking/arcing on the contact breakers. For my kit this doesn't matter: The kit has its own diode.
DO NOT reverse circuit the pump and/or kit! you can also not do this with the original pump! you might even blow-up your ECU!