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Old 06-13-2010, 03:59 PM   #1
malaga_red75
Scooby Newbie
 
Member#: 143024
Join Date: Mar 2007
Default Coil pack wiring woes...

Hey guys-

I have a coil pack that has 3 wires pig-tailing off of it (red, blue, yellow). It is a Diamond off of a JDM EJ25 DOHC. I originally bought an USDM harness for the motor and all of the connections fit except the coil pack, so I made my own connection for the coil pack (3 individual blade connections). I then had Outfront Motorsports re-do my harness with a Stinger ECU system. So, here is the problem;

- I am not exactly sure what the right combination is for the coil to be working properly. There are only 6 combinations and I have tried them all.

-when I hook up everything to their corresponding wires (i.e. red-to-red, blue-to-blue, yellow-to-yellow) the motor fires up but there is no spark from the back set of spark-plugs.

-there are two combinations that work with all cylinders receiving spark.

I am thoroughly confused and want to get some more info before I call Outfront on Monday. I just would like to know how the coil pack works in relation to the wires (what wire receives what signal). thanks a lot in advance.


-Peter
1974 Porsche 914 Suby conversion

Also,

Even when all cylinders are receiving spark the back two cylinders are still not firing. I switched the fuel injector plugs (back wires to front) and the engine still works, albeit the back two cylinders so I know that the signal is getting to the fuel injectors. Could it be that the timing is so far off that the cylinder is receiving spark and fuel, just not at the right time? Thanks.
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