8 HP YAMAHA 1997 - I NEED HELP

by JAIME ROJAS
(PUERTO RICO)

I HAVE AN 8 HP YAMAHA 1997.I PUT A NEW CARBURATOR KIT. A NEW COIL.I CHECK THE FLAPPERS. I DID A COMPRESION TEST.AND IS 120 PSI.I MEAN I WENT TO EVERY THING LIKE 20 TIMES.AND THE MOTOR RUNS SLOW AND SOME TIMES RUNS FAST AND SMOOTH.I WANT TO KNOW WHAT THE PROBLEM MIGTH BE.AND ALSO LIKE VIBRATES.BUT WHEN RUNS FAST EVERY THING STOPS AND STAYS QUIET AND DOESNT VIBRATES.THA PROPELLER IS NEW ALSO. IMEAN THAT HAPPENS MOST OF THE TIMES.CAN SOME ONE TELL ME WHAT THE PROBLEM MIGHT BE? THANKS

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