spdestounis
New member
Hi to everyone,i am from Greece and i would like your help on a low rpm bad shaking of my motor,i have a Yamaha 130 v4 1996 the problem that i have is on a very bad shaking of the motor between 900rpms to 1600 rpms after that motor js running great in all speeds.
What i have done so far i changed fuel pump cleaned the carburetors 3 times with ultrasonic i put a rebuild kit and i changed fuel lines i made the link and sync procedure by manual also i checked the atdc timing buy light and it's spot on 5 degrees.
I don't have any clue why this is happening the only thing i can remember is that when i bought the motor from another guy i discovered that he had bump up the btdc timing from 22 degrees to 25 and i put back to 22 also after that i made all the procedure of timing.
The motor runs great after that low rpm spot but i can't find a solution to this please help!!!
What i have done so far i changed fuel pump cleaned the carburetors 3 times with ultrasonic i put a rebuild kit and i changed fuel lines i made the link and sync procedure by manual also i checked the atdc timing buy light and it's spot on 5 degrees.
I don't have any clue why this is happening the only thing i can remember is that when i bought the motor from another guy i discovered that he had bump up the btdc timing from 22 degrees to 25 and i put back to 22 also after that i made all the procedure of timing.
The motor runs great after that low rpm spot but i can't find a solution to this please help!!!
