Just curious, guessing your distributor has internal lights, one for the cam sensor and one for the crank sensor. Did you happen to remove the cap and turn the motor by hand without fuel and the key on, to see if the lights light up with each cylinder. Might tell you if it's the distributor or the Ecm causing the problem. Where's Haxby ?

So you have both crank and cam trigger sensors correct? Almost seems like their not in sync. Yet on the other hand seems like it would miss spark like every other or every rotation and not just every 10 sec plus or minus. You have any luck yet?

You check the harness good or may wiggle/move around while running. Doubtful but hey. See if this is of any help.


http://forums.holley.com/showthread....m-Sensor-Setup

May have found the problem. One of the ignition setting was off 10*. After adjusting that setting I now have spark on #5. I will run it on the hose tomorrow to make sure.