Why don’t diesel engines rely on spark plugs for ignition? They weren’t phased out of passenger cars; instead, they found a more suitable niche. by Yulia | Jul 30, 2026Why don’t diesel engines rely on spark plugs for ignition? They weren’t phased out of passenger cars; instead, they found a more suitable arena. While both gasoline and diesel engines convert fuel into power, gasoline engines need spark plugs to...
