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Symptoms bad fuel injector - Accent Hyundai Cars & Trucks

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Posted on Jan 02, 2017

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SOURCE: symptoms bad fuel injector,

If your fuel injection system has a fuel rail to deliver fuel to the injectors, you will have to remove it before you can remove the injectors.
First disconnect the fuel line at the end of the fuel rail. If there is another lune at the other end remove it too. (always be careful, some of these lines are under pressure).
Remove the screws or bolts which ever is holding the rail in place, if the wiring travels over the rail disconnect it first.
With everything disconnected, pull the rail away from the injectors. Most of the rails are just pressed on to the top of the injector tops, once you've removed the screws the rail should come off easily.
If your vehicle doesn't have a fuel rail then you have to disconnect the clips to each injector. Each injector will have a clip either at the top or at the top on the side that connects to the wire harness. Most fuel injector wiring plugs are held in place by a springy wir. To remove this wire, put a flat head screwdriver between the wire spring and the clip and CAREFULLY pull it away (don't loose it).
With everything off, you are are ready to remove the injectors (it is recommended that you use an injector puller) it is important that you don't break anything or let dirt and debri fall inside of the port wholes of the engine.
With the injector puller you just slide it under the injector and pop it right out.
To put the new injectors in just do the same as removing the in reverse. Remember to be careful and don't force anything.

I hope this helps for you.
Sorry if all thre pictures don't show.

Posted on May 11, 2013


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DTC P0202 - Cylinder 2 Injector Circuit Malfunction
P0202 means that the PCM detected a fault in the injector or the wiring to the injector. It monitors the injector and when the injector is activated, the PCM expects to see the voltage pulled "low" or close to zero. When the injector is switched off, the PCM expects to see a voltage that is close to battery voltage or "high". If it doesn't see the expected voltage the PCM will set this code. The PCM also monitors resitance in the circuit. If the resistance is excessively low or high it will set this code.

The symptoms for this code will likely be a misfire and a rough running engine. Poor acceleration. The MIL will also be illuminated.

The causes of a P0202 engine light code could be any of the following:
Bad injector. This is usually the cause of this code but doesn't rule out the possibility of one of the other causes
Open in the wiring to the injector
Short in the wiring to the injector

DTC P0302 Code - Cylinder #2 Misfire
A P0302 code means that the the car's computer has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #2.

Symptoms may include:
the engine may be harder to start
the engine may stumble / stumble, and/or hesitate
other symptoms may also be present

A code P0302 may mean that one or more of the following has happened:
Faulty spark plug or wire
Faulty coil (pack)
Faulty oxygen sensor(s)
Faulty fuel injector
Burned exhaust valve
Faulty catalytic converter(s)
Running out of fuel
Poor compression
Defective computer

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  • the engine may be harder to start.
  • the engine may stumble / stumble, and/or hesitate.
  • other symptoms may also be present.
--------------- A code P0304 may mean that one or more of the following has happened:
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  • ---------------------
If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.
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This should help.Thanks.Helpmech.

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