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Yamaha Tech Originally the Yamaha XT600 Tech Forum, due to demand it now includes all Yamaha's technical / mechanical / repair / preparation questions.
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  #1  
Old 23 Sep 2020
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Injector not working

Hi I have a yamaha ybr125 2008 I pulled bike apart to clean it up now it won't start ie theres no fuel coming through the injector I have tested the injector and replaced with new I have spark full charged battery . I even swapped the ecu from a running bike done all the test for voltage seems to be OK but still no fuel coming through fuel pump is OK its just the injector not active please help. I know ecu is ok so what else on these bikes makes injector work is there a sensor like throttle positioning sensor or what else scratching my head
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  #2  
Old 23 Sep 2020
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its an XT forum here, mostly 600s, not YBR...


never mind, check that your fuel pump is working,
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Old 23 Sep 2020
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Pull the fuel hose off the injector and crank the engine. If fuel doesn't blast out at pressure, you have a fuel pump issue or something related to that.

Careful with the fuel. Put the hose into a bottle.
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  #4  
Old 24 Sep 2020
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Quote:
Originally Posted by turboguzzi View Post
its an XT forum here, mostly 600s, not YBR...


never mind, check that your fuel pump is working,
Now the Yamaha tech section
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