Hello everyone, First time poster so be gentle on me!! Ok so I purchased a 1991 Tiara 3100 Open with 7.4ltr gas engines. 1200 hrs, fresh water only, marina maintained and is in immaculate condition, probably a 9 out of 10. Fuel tanks where full when I bought it and apparently where kept at full at all times since new. My surveyor water tested the boat before my deal was inked, and told me it ran as new, started right up, idle perfect, powered up nicely, smooth no vibrations, he ran it up to WOT for a moment and told me it topped out at 4500rpms right where it should apparently. He also mentioned it ran beautifully at a cruising speed of around 23-2500 rpm. We agreed on a price and I hired a hauler to tow it approximately 5 hours to my home where I spent the last 3 weeks rigging it out. Yesterday it was hauled another 2 hours to the lake. I was quite surprised actually at how much it bounced around on the rough sections of the highway. Any how we arrived at he marina and I had the travel lift splash the boat down, after about a half hour of getting organized I fired it up, she started right away and idles perfect, we let em warm up and slowly make our way through the marina, the lake was rather rough with some heavy easterlies. We start to power up the boat and all seems GREAT!! however once we get close to 2800 - 3000 RPM (where the four barrels open) it sputters a bit and stalls......we slow down and it fires right back up and idles perfect, start to power down again and it cuts out again at the same RPM range. It is only the star board engine that is doing this. It also seems not be a tad inconsistent now at low RPM. Inconsistent may not be the right word for it but it seemed to have a real small rumble or surge... really minor & barely noticeable compared to the port side. Our thoughts are maybe fuel related, I am going to pick up new water separators and fuel filters and clean the flame arrestor. I am wondering if the 7 hours of bouncing down the highway has stirred up some sediment in the tank?? Any thoughts or help??? Thanks! BTW: Nice site!!