James Sweet wrote:

snip
I know all about how to keep my old vehicles with carburetors running
good.I am staying away from those new fangled vehicles with that
so-called ''modern technology'' stuff on them.

snip

Injection systems are mechanically simple and electrically consist of just a
few sensors, some wiring, relays, a pump, and a control box. If you're not
comfortable working with that stuff what are you doing on an electronics
repair group?

You assume a context of the developed world with a sustained tech. base;
try maintaining modern vehicles in remote locations under extreme
conditions without benefit of spares, test jigs and proprietary
instruments. There will always be a need for simple and elegant
tech. which can be maintained with basic tools, techniques and
knowledge, not to mention the issue of EMP survivability.

Michael