Semi-trucks are crucial for getting goods across the U.S., and in 2022, semis achieved $940.8 billion in freight revenue, per TruckInfo.net. But have you ever noticed how the majority of 18-wheelers ...

Any certified gearhead knows that diesel engines do not use spark plugs. But why not? If power in an engine is created by combustion or explosion of flammable liquids, won't a spark plug in a diesel ...