No spark
 

Alright guys, a little background. I have basically learned the FSM over the last 6 months. I bought a stripped roller at the beginning of this year and have sourced out every interior and engine piece you can think of from aftermarket suppliers, the mazda dealer, and forum members alike, which gave me a chance to put my car together the way I wanted to for a street-able weekend car. Fast-forward to now and the car is good to go. The new motor has been cranked over and built up 30 psi of oil pressure and the walbro pump is flowing to all of the injectors just fine; the motor basically is the healthiest build I can imagine. The downside is I have NO SPARK from the leading or trailing spark plugs. I bought the coils used but I cant imagine they would all go bad at once right? I have checked all of the connections (CAS, coils, ECU, ignitor etc), the EGI fuses, and I have tried both my stock ECU and my Power FC with the same results.

My question is am I overlooking something? What else should I try?
Are any other fuses related to ignition spark? Could the ignitor be bad?

I am trying to have this ready by Import Alliance which is 2 weeks away so any help would be greatly appreciated!

Check the green wires going to the coils for 12v. 2 on the leading and 1 on the trailing I believe.

Cancel that. Didn't know this was 3rd gen section.

Same concept tho. Check for hot at coils.

Alright the coils all have 1 ohm of resistance as per the fsm. My other ignitor did not fix it and switching ecus did not fix it. The coils arent getting 12v since they are losing power along the lines. Again I checked all of the connections and Im not sure why they arent getting power at crank. Any ideas on how I can check if the crank sensors are getting the correct signal?

on my second gen, the coils have a constant 12v source. If you don't have 12v to the coils, you need to chase those wires back till you find out why.

Study the wire diagram. All you can do is process of elimination. Start on one end and work your way to the other, eliminating all variables until you find ur problem.

Like I said, I have a second gen, don't know if it's the same.

Here's some wiring diagrams.

http://foxed.ca/index.php?page=rx7manual#thirdgen

Good luck.

Alright. I got the trusty multimeter out this weekend and traced the current until it gets to the EGI relay. A simple switch test shows that it isnt flipping when it receives a 12v signal. I ordered a new one so hopefully this should fix it. The reason I didnt take this into consideration before is that in stock form (based on the FSM wiring diagrams) the fuel pump and the plugs run off of this relay....However my fuel pump is running off of a direct relay to the battery and the ignition for a constant 12v when the key is turned which would explain why one works and the other doesnt. Silly electrical gremlins. Will update shortly