Checking, replacing and maintaining your spark plugs is actually one of the easier and most affordable car-maintenance jobs you can do in the comfort of your own driveway — that is, if you don’t screw ...

An internal combustion engine needs three things to get going: Air, fuel, and spark. The throttle body and intake plenum feed air, while injectors spray the right fuel mix into the combustion chamber.

Unless you own a diesel motorcycle, then the spark plug in your petrol engine is probably one of the most key components if you want to operate your bike. Of course, there are others – tyres, brakes ...