A fuel filter keeps out dirt or debris particles from a vehicle's fuel line and prevents their entry into a vehicle engine. A filter that goes bad or fails to function properly can cause an assortment of abnormal engine problems. Learn to recognise the most common symptoms of a bad fuel filter to keep your car running smoothly.
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A bad fuel filter can cause an engine to hesitate, or stumble, if the filter restricts the flow of fuel into a vehicle's engine.
The main cause of engine stalling is a sudden break in fuel flow to the engine, a condition that often occurs when a fuel filter becomes blocked with debris or sediments and stops fuel from entering a vehicle's engine.
Rough Engine Idle
A rough engine idle is a common condition that can occur from either incomplete engine combustion or restrictions in the amount of fuel reaching an engine. A bad fuel filter can often reduce the flow of fuel to an engine to the degree that normal engine combustion is negatively affected. This can cause, among other things, a rough, erratic engine idle.
Reduced Engine Power
If fuel flow to a vehicle's engine is reduced, it prevents normal engine combustion and causes a noticeable reduction in engine power output. A bad fuel filter, especially one that is plugged, can restrict fuel flow to a vehicle's engine enough to impede engine combustion, which leads to a decrease in engine power.
If a bad fuel filter completely stops fuel flow to a vehicle's engine, the vehicle will not start. An engine relies on the ignition of fuel and air to start and operate.
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