Friday, 22 August 2014

Yamaha YZF R125 fuel injection system

Yamaha YZF R125  fuel injection system   
buy a haynes workshop manual from here 





The fuel injection system on the YZF R125 is straight forward and easy to work on

it have inbuilt diagnostics and you can also use the Yamaha FI diagnostic tool for greater
problem solving power .

See link here for more info on FI tool 

the fuel pump

Yamaha YZF R125  fuel injection system

you can test this by adding power to the terminals and listening to sound , or turn key and here pump prime , i like to test the fuel pressure too .

i use a home made tool to do this  

Yamaha YZF R125  fuel injection system



CDI obviously times the fuel injectors timing and opening duration 
these can go faulty but test all obvious first buy here if needed 

Yamaha YZF R125  fuel injection system

Yamaha YZF R125  fuel injection system

Throttle body with other input sensors you test all these components 



Yamaha YZF R125  fuel injection system

Yamaha YZF R125  fuel injection system

Yamaha YZF R125  fuel injection system

Yamaha YZF R125  fuel injection system

Yamaha YZF R125  fuel injection system

Yamaha YZF R125  fuel injection system



Other posts of interest .

Yamaha YZF R125 testing injector


Yamaha YZF R125 , Yamaha FI diagnostics Tool Scanner Machine








see more Yamaha YZF R125 blog posts 



thanks for reading the Yamaha YZF R125 Owners blog , if you would like to support us you can by  buying your new Yamaha YZF R125 off ebay uk here

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