Wednesday, July 20, 2011

How to Replace a Fuel Injector?

Open the hood and locate the fuel injector rails.

Hook up the fuel injector tester to the Schrader valve on the fuel line.

Turn the key to the ON position and allow the fuel pump to build pressure in the system. Do NOT start the vehicle.

Press the test button on the fuel injector tester and allow it to pulsate the fuel injector for the needed amount of time.

Repeat this for each fuel injector and write down the pressure indicated on the tester for each fuel injector.

After all the fuel injectors have been tested and you have the pressure readings, find the average reading for all the fuel injectors. Add all the readings together, then divide by the number of fuel injectors in the engine.

Compare each original fuel injector PSI reading to the average PSI reading. If you have fuel injectors that are above OR below 1.5 PSI of the average, they are faulty and will need replacement.

After you have determined which fuel injectors need to be replaced, follow instructions on removal and replacement.

Locate and disconnect the fuel pump relay. Start the vehicle to discharge any fuel already in the lines. This will release the pressure in the lines and allow you to remove the fuel injectors safely.

Locate the fuel rail connector. There are a few screws that hold the rail to the engine block. Loosen these screws so that you can pull the fuel injectors out while attached to the rail.

With the fuel injectors and rail disconnected from the engine block, unclip the electrical connector to the faulty fuel injector and replace the fuel injector with a new part.

After all faulty fuel injectors have been replaced; reconnect the fuel rail to the block and road test the vehicle to confirm that the rough running engine has been fixed.


For more car related problem troubleshooting:---

This are the sections, you can go through and click the link to read its troubleshooting.


The car will not start?



Car will not crank?



Car has no spark?



How to troubleshoot car battery?



How to test starter solenoid?



How to test cars starter?


How to replace starter in car?



car will turn over but will not start?



The Brake Indicator Light Stays On dash of car?


The ABS and Traction Control Lights stays ON dash of car?


Check Engine Light On car?



How to replace Interior Lights on car?


Car lights not working, even after replacing the bulb/lamp?

Click this link below:--



How to replace head lights on car?



How to replace Parking, turn, and Brake Lights on car?

How to remove the door panel on car?


How to replace power window motor in car?


How to test relays on car?



How to troubleshoot Engine Misfires?



The spark plug firing order for car?



Where is the Thermostat located in car?


How to recharge AC on Auto/Truck/car?



How to trouble shoot speedometer?


To Order car parts online:--To get heavy discount on car parts .Click this link below:----


How to Replace Coil Springs?


How to Replace an Oil Pan Gasket?



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