Over the past three decades, as fuel injectors moved from the intake manifold to the combustion chamber, they have become more precise in dispensing fuel. To maintain this precision, vehicle owners should be on their guard for signs that their vehicles’ fuel injectors require service or replacement.
Residual debris in the fuel system or dirty fuel can caused blocked injectors. A common problem. when individual fuel injectors are blocked, it can reduce their ability to deliver the fuel-air mixture to the engine properly and cause rough performance.
TIP: Dirty fuel injectors in turbocharged engines can make the fuel/air mixture dangerously lean, resulting in engine-damaging “detonation” (also known as “knocking,” premature spontaneous burning of a fuel–air mixture).
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