No Spark after rebuild

[shuedaman]

Rebuilt 7 bolt in 2g. Installed Megasquirt to handle the fuel and spark. Tried starting the motor after fixing boost leaks, setting fuel pressure, checking leaks, filling fluids, etc. and got nothing. Checked for spark on all cylinders, nothing. New plugs, new wires, new transistor pack, swapped to 1g CAS.

Here's what I've tried:

Checked coils, transistor pack, wires, and plugs per the chiltons manual - everything checked out fine. Used every combination of old wires/old plugs/old transistor packs, still no spark. Checked Megasquirt during cranking and it wasn't reading any RPM. Bought another 1g CAS, still no RPM reading. Reinstalled/rewired back to 2g CAS, still no rpm reading/spark.

No spark when firing the plugs from either the stock ECU or the MS. Running out of ideas for what could be wrong, posted on MS forums and now here looking for some help.

The MS is certainly adding fuel, there's no shortage of it except that it's 4 months old in the tank.

 

[Carmenpzito]

yeah i just installed some 750cc inj, turbo, and some other stupid shit and now im having this same problem. checked two different coils packs, ecu's, wires, CAS...nothing. for you though if the MS isn't reading rpm try uninstalling it and run the car to see if its that.

 

[shuedaman]

As far as spark is concerned, I did uninstall the MS. Tried to get spark using completely stock system and got nothing. I'm wondering if it has something to do with the ASD relay, it's about the only thing I haven't checked.

 

[shuedaman]

Resolved- CAS was the culprit. Needed to fix the ground wire and suddenly things just started working, imagine that.

 

[GalantGreg]

Resolved- CAS was the culprit. Needed to fix the ground wire and suddenly things just started working, imagine that.

Things that make you go

You must be logged in to view this image or video.