primary injector harness mix-up '90 fc na
 

i should have taken note when disconnecting them but i now im not sure which harness goes to which injector.

now im only talking about the two primaries. is there any way to tell which one goes to the front and which one goes to the rear?

put them to wherever,they batch fire...at the same time.

The front primary injector has the Light Green wire (no stripe) thus the rear primary would be Light Green/Black.

the primary injector Do not like to be mixed i know my 87 did not like it at idle it ran but you could tell it defiantly did not like it something was not right. :scratch:

They fire off at the same time so you had something else wrong.

Might be wrong, but fuel cut sometimes affects the front rotor while at other times it affects the rear rotor. If you had the primary injector wiring switched then you would be reversing the fuel cut at low rpm's.

I can see that happening...
try mixing trailing with leading..lol..
That gave me 3 months of WTF did I do!!!