No spark 67 valiant
Mulimeter & test light should stay in ther tool box at this stage
I have to disagree.
the car ran, then it didn't.
all of the ignition components were replaced (assumed for the moment to be good)
the car still does not fire.
Likely cause of the no fire is something that happened to something that was NOT replaced. checking for voltage at key points and under key conditions is a proper way to diagnose.
WE DO NOT KNOW enough abut the no fire condition to really know anything.
I AGREE that checking for spark is a quick way to test for power to the coil but it might not tell the entire story, like bad IGN 1 circuit or wire and it tries to start but let off the key and it dies.
EXAMPLE... a few months ago I was heading to a car show. stopped at a McDs started the car moved 20 feet and it died. cranked no fire, sometimes it would try then give up or sometimes with the throttle full to the floor it would start and lump lump till you let off the gas then die.
I had a timing light with me and it would show the timing mark at the right moment while cranking, so I had spark and at the right timing. the problem was a broken ground wire inside the dist. when the breaker plate was not moving due to vac advance the ground wire was making a poor connection. get a little vac advance and it would open the ground. ran a temporary ground wire and it ran fine and got me home.
point is just having spark doesn't tell the whole story