Ok so I have a 1976 Datsun with a SBC in it. The ignition setup is a MSD Digital 6 Plus, MSD Blaster SS coil and MSD pro billet distributor. My issue is that I am getting spark to the cap but nothing is coming out, if i manually trigger the coil via jumping out the trigger wire while the rotor is pointing to cylinder one post the plug will fire but when I crank with everything connected I get nothing at any cylinders. I called msd and they told me the spark is grounding out inside the cap but i find that hard to believe. Have tried a new coil with no luck. When I put a plug directly to the coil wire it fires rapidly like it should so spark is going in but not coming out. Any ideas? or has this happen to anyone else? Thanks David