Yes, that is the problem, we DIYers usually learn "on the job", and since the newer stuff breaks down less we are ignorant(means lack of specific knowledge, not stupid) of how all the systems work
But you WILL do fine because you already know HOW its suppose to work
For gasoline engines, compression, fuel and spark
Compression is mechanical so the same from 1879 to 2023
Its the fuel and spark delivery that has changed, but you already know whats suppose to happen and when
And its not changed all that much, 50/50 test tells you whats missing, fuel or spark(assuming good compression)
But you WILL do fine because you already know HOW its suppose to work
For gasoline engines, compression, fuel and spark
Compression is mechanical so the same from 1879 to 2023
Its the fuel and spark delivery that has changed, but you already know whats suppose to happen and when
And its not changed all that much, 50/50 test tells you whats missing, fuel or spark(assuming good compression)