There was some electrical issues before then, but it was very limited. I worked for a Datsun (Nissian) dealer in the late 70s and the Z cars and the high end sedans were EFI and electronic ignition, back to the 74 models. All the lower end stuff, including trucks were all carburated. Toyota were similar. I had a 86 Toyota put that was the last model they made without EFI. Wish I stl had it.
All that to say, it varied greatly by manufacture and model