Putting this out there, compression is good in both all cyl 150 psi +
swapped out Engine ECU's with another good S. No change still misfires cyl#2,#3. Tried installing a good crank sensor,no change,tried installing
a good Cam sensor no change,swapped coilpack,no change. any help would be appreciated also you can pull the plug wires from those cyl no change
definetly dead holes.


Guido

 

Any codes? It should be working if you chaged out the entire ignition system and compression is good. Did you change the plugs? or at least try swapping them from the other cylinders?

 

Need 3 things, spark, air and fuel.

We assume air is there.

Is there spark? Did you crank it over with the plugs pulled but connected to see if there is a spark?

What about clogged injectors?

Fuel Filter clean?

 

Yes Spark @ 1&4. Stuck or clogger injector would not cause me to have no spark @ 2 cyls. I think the problem is a break in the wiring harness
I get the ground pulse signal from the DME for cyl 1&4 but no signal for
2&3. The DME has a grounding circuit internally when it see the complete
circuit of the coil windings, the voltage signal is pulse to dme complete the ground to fire that cyl.

Were not getting that signal. I didnt get to my buddys shop to help him

I give you guys results tommorow with what we come up with.
But All the basics have been address. From plug wires to plugs and so on.

 

faulty engine wiring harness