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MPFI Fuel Injector Order On Manifold?


blade34609
12-21-2003, 02:28 PM
Hi,

I just wired the injectors to the ECU and I wanna make sure I did this right.
The fuel injector order goes 1, 2, 3, 4 from left to right on the fuel rail right?
DX injectors go to 1 and 3 and ECU injectos go to 2 and 4 correct?

Also, how do I test my injector resistor box to find out if its good?
Thanks

EF You
12-21-2003, 07:13 PM
no man, injector 1 is by the crank pulley side of the engine, and 4 is by the transmission side of the engine.

blade34609
12-21-2003, 11:23 PM
Alright I am soo confused.
on this pic http://files.automotiveforums.com/uploads/987289dpfi2.jpg

it says the injector order is 3,1,2,4 from left to right

on this one http://www.angelfire.com/d20/hcivic88/images/dxsi_diagram1.jpg
It is 3,1,4,2 from left to right

which one is correct or will they both work?

So I take the yellow DX wire and connect it to the #1 injector
Red DX wire to #3 injector
A7 ECU wire to #4 injector
and A3 ECU wire to #2 injector

blade34609
12-21-2003, 11:41 PM
Quick question.
What is the order of the fuel injector wires.
From left to right on fuel rail- Is it blue, brown, yellow, red?
Thanks

blade34609
12-22-2003, 11:31 AM
Come one guys someones gotta help me with this.
Thanks

blade34609
12-22-2003, 11:43 AM
Alright guys I found the correct fuel injector order.
It goes 4,3,2,1 just like incucivic posted.
I looked it up on http://www.binghamtonlife.com/manual/2gsm/images/91-23-13.jpg

bambam89lx
12-22-2003, 02:39 PM
This is how stock mpfi cars are setup such as the 88-91 crx/civic si:

looking into the engine bay on the intake manifold from left to right:
yellow, blue, red, brown,
4 3 2 1

at the ecu:
a1: brown: injector #4
a3: red: injector #3
a5: blue: injector #2
a7: yellow: injector #1

hope this can help.
also, when I did my mpfi swap, I ran the same color wire directly from the ecu to the injectors. I didn't do any cutting or splicing. I just deppined the yellow and red injector wires at the ecu and repinned the them in their correct locations. I suggest this so that there isn't any breaks in the injector wires.

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