Direct injection engines inject fuel directly into the combustion chamber, which can lead to carbon buildup on intake valves over time, as they aren’t cleaned by fuel. Port injection engines spray fuel into the intake manifold, allowing fuel to clean the intake valves, resulting in less carbon accumulation.
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Common Faults
Direct injection engines inject fuel directly into the combustion chamber, which can lead to carbon buildup on intake valves over time, as they aren’t cleaned by fuel. Port injection engines spray fuel into the intake manifold, allowing fuel to clean the intake valves, resulting in less carbon accumulation.