Inconsistent startup on street ported 12A

[dr.occa]

Originally Posted by mattallac

Well first off the dlidfis set up is ok ,lots of coils . Did it run on the dlidfis set up before the carb was installed ?I did a 3 coil set up and it turned out one of my new coils took a shit (pertronics) so I switched to msd and it was all good from there.Did you check your fuel psi and is it going through a regulator at 4 to 4.5 psi ?Also is the fuel pump sucking through a straw or is it free flow (outlet on bottom of tank)? Is it a fuel return system or a dead head system? What fuel pump are you using?Last of all is the carb new or used?

I doubt the previous owner ran an DLIDFIS setup but I couldn't tell you with 100% certainty. All 3 coils are MSD Blaster coils in like new condition. It won't hurt to re-test them just to confirm.

Fuel is via a carter 4070 in the rear to an aeromotive bypass fpr. Line routing is 5/16 incoming to the fpr and a 3/8 bypass return. Pressure readings with just the pump on is 6+psi and that's without the motor running. When I did get it idling on I was able to adjust the pressure down to 4-4.5. I should probably go ahead and just re-run a new 3/8 line from the tank to the fpr just to make sure.

The carb is rebuilt.