Evinrude BE50TSLECC 1998
will only Run at low rpm, throttling up makes the engine splutter and running very rough, checked fuel filter pumped fuel through seems clean, opened up the top Carburettor looked clean no sediment etc, removed the Primer system and checked the hoses, there was some rub marks so I taped the hoses up.
Re assembled everything and the engine was running fine for two days, the is went back to running rough at higher rev.
Normally work on Diesel engines not outboards so I'm at a loss, where to look Carburettor, fuelpump or Primer, I will be getting a new fuel filter.
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