[Bill Wells]

sometimes msd stands for Might Sorry Device...they are heat sensitive as well as vibration prone on occasion to failure. be sure to use some rubber washers for help with vibration . you didnt say where your msd box was located, but if your msd box is in the engine compartment , move it to the passenger footwell area in the cockpit.

don't rule out fuel pump intermittent problems, some have overheated and letting them cool or tapping them lightly will restart them. i dont want to mention the brand in question but something blue comes to mind. ie, might not have been msd but fuel pump related...or both.

msd failures, like other electronic devices, can of course go bad at any time. many last forever, and others have a short life. kinda like light bulbs, 1000 hours for some and 10 hours for same brand on another. bill.