What happens when you have a spark plug problem?
What happens when you have a spark plug problem? Fuel Economy – If you’re tracking fuel economy, as everyone should, spark plug problems might cause your engine to consume more fuel than usual. As the ECM has no control over spark strength or oxygen content, it adds fuel to compensate for poor combustion. Misfire – A cylinder misfire occurs when the spark plug can’t ignite the air-fuel mixture. How are spark plugs used in port injection engines? Port-injection engines inject fuel during the intake stroke, while direct-injection engines, gasoline or diesel, might wait until the compression stroke. Finally, heat is...