rembull

1993 gt40 rebuild. Wont start have spark and fuel. At least the gauge at the schrader valve says 38psi. Does this mean though that each injector is pumping fuel. Unfortunately reversed the battery leads and smoked the selenoid. What would be the next step assuming something else is smoked?

mjr46

Your missing something somewhere?? is it a weak spark??? are the injectors pulsing???you can check for injector pulse with a noid light or a test light.

rembull

I don't know a weak spark from a strong one visually. I replaced the coil and ignition module. I will have to buy a noid light to check injectors. If it is weak what else could cause it.

mjr46

you'll need to verify that you have 12volts supplied to coil with a volt meter if you've got a voltage drop somewhere due to frying a component it can cause lots of problems but first things first check for injector pulse via noid light