Question

Which stage occurs just before ignition in an internal combustion engine?

Answer 1

usually, the fuel pump turns on, along with all of the vehicle's electric systems, but on a large diesel engine, like in a semi, or agricultural equipment, the intake, and carburetor are activated first to allow diesel (fuel) into the engine to combustion can be produced once the engine turns over

Answer 2

I think it is this because compression stroke it needs to be compressed then open up when started.