I know very little about engines. When my car won't start, I haven't a clue what to do, where to look or what to try. It's depressing and you feel helpless
This is hopefully going to be a reference for things to try when your car is broken or won't start. It should provide a valuable starting place when you get that sinking feeling in your stomach and the search function is not helping.
It will no doubt become full of anecdotal advice, some of which may be contradictory or may not be relevant to your particular model. If you want to add to it, please keep to SOLUTIONS THAT HAVE WORKED rather than conjecture. That way it should cut down on arguments or deletions.
I'll start with a couple of my own soon but i'm not yet sure how to create subcategories. Feel free to edit, but consider it work in progress. If you know how to create subcategories under the main category of "Troubleshooting", please do it and save time. Thanks :-)