How do I make my own engine mod?

I want to make a diesel Ibishu Pessima but I don't know how. Can someone teach me how to make this mod? What are some tips for making engine mods?

 

idk man, I'm kinda on the same page as you

 

I hate seeing old unresolved posts, so I'll try to give an answer:

Making an engine from scratch can be quite hard, so I recommend you use one of the already existing engines.
You should try downloading an existing engine mod and look at the file structure of that mod, then you can try to make your own based on that file structure and the files from the Pessima.
If the only thing you want to do is make the Pessima use diesel, you can just change this line in the engine file:

Code:

"requiredEnergyType":"gasoline", //Type of fuel required

this can be changed to diesel.

 

If you are wanting to do custom torque curves then engine sim or automation is good for that

 

The engine doesn't show in the parts selector and I don't know why

update: i find out how and i made my mod