Please helppppp! Yamaha s130 txrx s stroke

Jayc4400

Recruit
Joined
Jun 11, 2019
Messages
1
Im new to the forums so I appoligize if im posting tk the wrong section. In desperate need for help on a 1999 yamaha s130 txrx v4 outboard. Originally it was bogging down anything over 8 mph then would clear out after about 30 minutes and run fine. I thought it was the carbs being dirty so i bout rebuild kits and rebuilt all 4 carbs including floats. After this was done it is very responsive and runs great untill you go to WOT. After about 15 seconds it surges/ boggs down then rpms shoot back and forth untill you bring the throttle back down to under 4600 rpm. Ive done everything you can think of. Replaced every fuel line, syphoned the tank and inlet filter, changed fuel pump, replaced plugs, adjusted the flotats multiple times, resealed every fuel line/ fitting to be air tight, replaced every know filter and housing that exists in the motor including new fuel water separator and housing. Please help im lost for what ot could be any help would be greatly appreciated.
 
Top