Question about 2008 Yamaha YZF-R125

1 Answer

My fuel injector is not working. I have pressure from the fuel pump I have spark from the plug. When I hit the starter button the engine turn over the spark plug ignites but the injector doesn't spray any fuel. I have no idea what the problem is.

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  • randombrande May 24, 2011

    Used the test and nothing. I have checked all the switches and the lean angle sensor all working fine. Arrrrgh this is frustrating.

  • randombrande May 24, 2011

    Sorry I used the test light.

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  • Master
  • 496 Answers

Is it getting power?? is the efm working the way it should

Posted on May 23, 2011

  • 2 more comments 
  • randombrande May 23, 2011

    Hi there,

    Many thanks for the response but for the risk of sounding stupid, what is the efm? I only now it as an auto clutch?

    Regards

  • mark woodring
    mark woodring May 23, 2011

    fuel management system, the "computer" If this is not working then your car is dead, do something for me take your air filter off and spray some carb cleaner or W-D 40 in the intake and see if it trys to start

  • randombrande May 23, 2011

    It does try start yes as there is spark, compression and air. The only thing missing is the fuel. I have taken the injector out and tested it and it works fine. It just doesn't work in the harness.

    Manythanks for your time so far

  • mark woodring
    mark woodring May 24, 2011

    do you have a test light? check to see if you getting power and the plug for the injector

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2 Inspect Battery Cable Corroded, Broken, Shorted or Poorly Connected Battery Cable.
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