Weak or Clogged Injector Symptoms You Should Never Ignore (Starting at $129.95)

When a fuel injector has a weak coil or its nozzle is clogged, the engine can no longer deliver the correct amount of fuel. This leads to several noticeable performance issues:

Loss of Power

The engine struggles to accelerate because the affected cylinder isn’t receiving enough fuel for proper combustion.

Rough or Unstable Idle

The engine may vibrate, shake, or feel uneven due to irregular fuel delivery.

Jerking or Hesitation

Acceleration becomes inconsistent, causing sudden jerks—especially under load.

Increased Fuel Consumption

Because the combustion becomes inefficient, the ECU tries to compensate by increasing the injector pulse width on the other cylinders, which dramatically raises fuel usage.

Black Smoke From the Exhaust

An imbalanced air-fuel mixture can create incomplete combustion, producing black smoke—clear evidence of excessive fuel.

Why This Happens

A clogged or weak injector disrupts the air-fuel ratio inside the cylinder. This leads to poor combustion, loss of efficiency, and forces the engine computer to overcompensate, making the engine consume even more fuel than normal.

Keeping your injectors clean and functioning properly is essential for engine performance, fuel savings, and preventing long-term damage.

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