Role Of Fuel Injector

Delivers the exact amount of gasoline to

engine

Receives signal from ECU

Gas pump delivers pressurized gasoline to

fuel injectors

Fuel injector opens the valve as

directed by ECU

Fuel Injector sprays the fine gasoline to

intake manifold

What Are The common Fuel Injector Problems ..????

Common Fuel

Injector Problems

Fuel injector does not open

Fuel Injector Leaks

Dirty Fuel

injector

Dirty Fuel Injector

Dirty Fuel Injector The Fuel additive leaves a Residue

The Fuel injector gets clogged by the debris and dirt come from fuel rail or supply line

What Happens To

vehicle ..???

Causes Faulty

windings

Rusted fuel injector

What Happens To vehicle ..???

Fuel injector does not close

Causes

Fuel additives

Fuel Injector Leaks

Causes

Over heating of fuel injector

Sudden cooling down of injector

As a result , The fuel Injector does not function properly

What are the Symptoms for replacing Fuel Injector..???

Symptoms

Turbo Troubles

Heat Soak

Fuel Trims Lack Of Resistance

Restriction

Continued

Symptoms

Balance Test

Failed

Vehicle won’t start

Longer in Crank

Times

Restriction

A 8-10% restriction causes Misfire in fuel injector

Results in draining the fuel more than actual requirement

Turbo Troubles

In turbo-charged engines, engine damaging detonation happens due to fuel injector

The detonation process

Engine needs fuel when it is under boost

Heat Soak In Engine

Heat Soak In Engine

As engine is of no cooling airflow or fuel flow for cleaning the nozzle

The Process Fuel residue leaves olefin after engine shuts down

Long and short term Fuel Trims

Causes

Weak fuel pump Plugged fuel filter

What Happens To vehicle ..???

The built up causes less fuel pass to

cylinder

The drops of fuel causes drops in power resistance

Lack Of Resistance

Longer Crank Times

Why It happens….

Balance Test Failed

Way of selecting the faulty injector

Ways of balance test

Vehicle Won’t Start With Full Tank

Generally happens due to fuel contamination

Symptoms of fuel

contamination

Hard starting

Stalling

Loss of power

Poor Fuel Economy

Cranking no-start

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