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damian brady Posted on May 26, 2015
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Hyundai elantra has no fuel injector pulse - 2006 Hyundai Elantra

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  • damian brady
    damian brady May 30, 2015

    I only have 12 volts on injector one. Nothing on others. It runs on spray. New can sensor.

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Jeffrey Turcotte

Jeffrey Turcotte

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  • Hyundai Master 8,991 Answers
  • Posted on May 27, 2015
Jeffrey Turcotte
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Are you getting power to the injectors? How do you know there is no pulse? Note, the pulse is on the ground wire from the PCM. If no power, check fuses INJ and SNSR. If you have power, the PCM may be bad. Are you getting sparks? Need more info.
hyundai elantra has no fuel injector pulse - 25714671-4lps5wy2ri4kin0jo5qbpxmg-2-0.gif

  • damian brady
    damian brady May 30, 2015

    I have voltage at first injector. car runs on spray. all fuses are good changed can shaft sensor

  • Jeffrey Turcotte
    Jeffrey Turcotte May 31, 2015

    As you can see from the diagram, all of the injectors are powered by the same fuse and white wire. There must be a break in the wire--probably between the #1 and #2 injectors. Recommend you trace the wire carefully. Disconnect the injectors, and pull the connectors to stress the wire and see where it gives. Probably need to splice in a new wire.

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Hi there:
Two ways it could be a lack of fuel. Low fuel pressure or lack of injector pulse. Low fuel pressure is usually just a bad or weak fuel pump.. but you would want to check power to the pump when this happens before replacing it.

Injector pulse would be too low based on an input to the computer. These would include the coolant temp sensor, tps and mass air flow sensor.

Just a hit, sometimes the purge valve leaks fuel vapors into the intake and causes a hard start condition. However, this usually causes the engine to be flooded.. or have too much fuel or fuel vapors.

Other posibilitie could be the CKP (Crankshaft Position) sensor, but rare.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.
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