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Yamaha 70 2 stroke

S

Spotty

New member
Please help
my motor starts and runs
i let it warm up then give it some
motor will not go past 2500rpm
after awhile it kicks in and runs spot on without any problem
have had carbs cleaned. 130 psi per cyclinder
i am lost on what the problem is
any advice most welcome
 
What happens when engine reaches 2500 rpms?...Bog down? Sputter like its fuel starved? What happens when you squeeze the primer bulb when experiencing this issue?
 
ClassicAQ said:
What happens when engine reaches 2500 rpms?...Bog down? Sputter like its fuel starved? What happens when you squeeze the primer bulb when experiencing this issue?
Click to expand...
At 2500 rpm back end of boat digs in if I prime the fuel it does nothing
after say 10 minutes turn outboard off restart it and away it goes. Will then run fine all day long
next Trip do it all over again
 
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