Sputter at Full Throttle

Ramblin'man

Seaman Apprentice
Joined
Aug 12, 2011
Messages
35
1995 Bayliner Capri 2050LS with Mercruiser 5.0L V8

Got a sputtering issue when at full throttle. It seems that it only happens after we have been out for a while. We take off and I gently increase the throttle till we are full speed and then the sporatically the engine will bog down or sputter then take off, then sputter. It is so crazy cause she will hit 50mph according to the speedometer and fires up instantly so the little sputter has me partly worried. Afraid it may be a precursor to a larger ordeal.
I do know that the boat ran only 2 or 3 times the previous season before i bought it. We bought it July 15th of this year and it was winterized last year. The engine had been started a few times to "prove that it ran" and I had the boat inspected by a boat dealership repair shop and they found no problems pre-purchase. I have had the boat out at least one day every weekend since we bought it and have ran 3 or 4 tanks of gas through it.


Anyone ever had this before?
 
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