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#1
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Motor is a 2004 2-stroke 150 yamaha. Forgot to mention that.
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 1994 Wellcraft V21 
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#2
06-13-2008, 11:44 AM
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Fouled plug is a good first guess. Do you do any kind of carbon treatments? Sounds like she's running on 5 cylinders. Back to fouled pug and an easy fix we all hope...
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Airslot Airslot's V-20 Gallery
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#3
06-13-2008, 12:09 PM
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Slot I've used Sea Foam....but not religiously. Guess I need take this as a warning to do better on that front.
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1994 Wellcraft V21
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#4
06-13-2008, 12:10 PM
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Carbed 2 strokes that troll alot will experience more carbon problems than those who don;t troll...
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Airslot Airslot's V-20 Gallery
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#5
06-13-2008, 12:12 PM
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Very true. One thing that deters me from using additives is the angle of my fuel fill doesn't allow you to just pour it right in there. Gotta have a funnel or something due to the angle. I hate that.
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1994 Wellcraft V21
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#6
06-13-2008, 12:29 PM
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Welcome to E-10 fuels, it's a double whammy. Not only do you get reduced milage and power, you also get to deal with more deposits because of the cleaning effect of ethanol. It sounds strange, but ethanol likes to pick up any deposits and redeposit them where you don't want them. STAR-TRON is supposed to have an additve designed just for ethanol blended fuels.
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2011 SUNDANCE B20CCR SKIFF, 2011 YAMAHA 90HP 4 STROKE, 2011 KARAVAN SINGLE AXLE ALUMINUM TRAILER, LOWRANCE ELITE-7 HDI, MINN KOTA RIPTIDE TROLLING MOTOR 2000CC HYDRA-SPORT 225+HP EVINRUDE SOLD  AND THE PINK JEEP!!!! R.I.P. http://www.wellcraftv20.com/communit...ad.php?t=11664 
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#7
06-13-2008, 01:17 PM
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I just read up on the Star Tron product. Sounds pretty good.
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1994 Wellcraft V21
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#8
06-13-2008, 03:41 PM
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Blue Man did you happen to notice the fuel primer bulb when this was happening, some of what you are saying are problems I had with diffrent motors over the years and they traced back to one, fuel bulb, even a new one cause they are all crap now, two, fuel pump on the side of the engine.
If not those and the plug pull does not reveal any issues in one or more cylinders time to run an auxilliary tank. Also a good run like you had last week in some rough water can combine with the ethanol crap in your gas to dislodge a lot of sheeeet in your tank and lines, check your in line filter and the fuel/water seperator, you are likely to find unidentifiable sheeet in one or both of them.
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Willy 1986 V20 Old School 1992 V20 1992 150 Yamaha 1997 HydraSport 2250 Vector 2009 17' G3 Outfitter "G Spot" http://www.youtube.com/watch?v=TDebw...eature=related "I won't be wronged, I won't be insulted and I won't be laid on a hand on. I don't do these things to others and I require the same from them" JW
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#9
06-16-2008, 09:54 AM
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Well BLUE, your YAMAHA uses the old style OMC carbs(the ones they copied off of OMC back when they first started building them). They do have adjustable idle circuits in them, but the mid and high's are fixed. There are 6 bowl drains you can pull out, and I would reccomend you do this before you take it to somebody. You can look up diagrams and parts here.
http://www.yamaha-motor.com/outboard/parts/home.aspx
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2011 SUNDANCE B20CCR SKIFF, 2011 YAMAHA 90HP 4 STROKE, 2011 KARAVAN SINGLE AXLE ALUMINUM TRAILER, LOWRANCE ELITE-7 HDI, MINN KOTA RIPTIDE TROLLING MOTOR 2000CC HYDRA-SPORT 225+HP EVINRUDE SOLD AND THE PINK JEEP!!!! R.I.P. http://www.wellcraftv20.com/communit...ad.php?t=11664
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