Motor ?

50 Hp 4 stroke runs perfectly at idle ten missed a bit at higher rpm. Ideas?

Seen that with bad / clogged injectors

I had the same problem with my 115 Yamaha. Marine Service in Rock Hill took injectors off & send them to be tested, cleaned & re-calibrated. Problem resolved.

Give it a good dose of SeaFoam and run the poo out of it and see if it clears up.

I always use sea foam. It saved a total carb rebuild one already

Quote:

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Originally Posted by brettw

I always use sea foam. It saved a total carb rebuild one already

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how do you use it ???? every fill up or every other fill up and how much do you use ??? I always use 1 whole can of seafoam to every fill up of 12 gallons of gas !!!

I use the amount in the instructions

and

i have a separate 3 gal tank that I use once in a while to give it a strong dose