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-   -   Leading Spark issue (https://www.rx7club.com/2nd-generation-specific-1986-1992-17/leading-spark-issue-662546/)

The Wankler 06-15-07 09:42 AM

Leading Spark issue
 
I seem to be haing a spark issue. Yesterday, I was installing a E-Fan. I had also just installed my Crane Hi-6 Ignition. The car ran great on the new ignition. Soon after installing the EFan, my problems began. Its a Taurus E Fan FYI. After properly installing the fan, my ignition seems to stop working. I seem to be getting lazy spark? I swapped out my Crane ignition for the OEM one. Same thing. Seems to be little no spark. It sparks like once twice a second. I am getting power to the ignitors. It does give some spark, just not much. Any ideas?

The Wankler 06-15-07 10:03 AM

I just cranked over the car for 5 seconds. Pulled the leading plug. Shouldn't there be some wet gas on the plug? Dry as a bone.
1. little to no spark. Pulled the plug to look for spark. All I see is one single spark coming from the plug, then nada.

2. Plugs not getting wet.

SureShot 06-15-07 10:24 AM

Is you fan load current source to the relay comming off the battery or from IG1?

The Wankler 06-15-07 12:16 PM

The main red wire is coming off the battery.

I have the fan disonnected right now.

The Wankler 06-15-07 12:53 PM

Just swapped in another ECU, no change. I bet this is something real supid...

SureShot 06-15-07 02:42 PM

I'd start by checking the switch-on voltage in IG1 & IG2.

The Wankler 06-15-07 03:00 PM

I get 12v up to the main relay. But from there to the coils, nada. I do not get any voltage at the cpu as well. Could the Mian Relay cause this? I also just realized, I had a couple wires backwards when I wired the Crane Ignition in. The ones that go to the Main Relay.

SureShot 06-15-07 03:13 PM

Bingo - you're on it.
Either the main relay has a problem or it's stator coil not getting energized.


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