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#1
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Check all fuel CONNECTIONS and make sure they are tight...I was out on a boat recently that had just been repowered w/ twin 250s...idled well, but shove up the RPMs and the port motor would die every time...turns out the installing dealer used NON-SS hose clamps and in salt condition, two of them had already broken lose... Also insure fuel VENT intake fitting and hose are clear all the way to the tank...bugs will nest in there...I posted pics here once when it happened to my 21...it'll allow enough air into the tank to idle, but powering up means more air draw and a partially blocked vent will shut 'er down...
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'74 V-20/ BF 150 '95 V-21/ BF 150 '84 V-20/ 200 2.4 Merc '87 V-20/'18 F150 Yamaha 
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#2
06-29-2011, 06:44 PM
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does the engine still have points or is it HEi ignition? everyone has forgotten about points, if they set, they will need to be cleaned or replaced. 5 months is plenty of time for a carb to need to be rebuilt if it was left with untreated fuel
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#3
06-29-2011, 08:49 PM
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no the engine does not have points, and how would i go about testing the fuel, thanks to all who have replied this far
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#4
06-29-2011, 10:58 PM
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Quote:
__________________
1987 V20 w/1987 150HP Yamaha on a Shoreland'r Trailer 1978 16.5 Airslot w/1996 120HP Force on a Four Winns trailer 1996 V21 w/1993 200HP Mercury on a Shoreline Trailer All towed by a 5.7L Hemi Durango. If God didn't have a purpose for us we wouldn't be here, so Live simply, Love generously, Care deeply, Speak kindly. (Leave the rest to God)  Silence, in the face of evil, is itself evil. Not to speak is to speak, not to act is to act. God will not hold us guiltless.
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#5
06-30-2011, 07:19 AM
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fuel
oki,that is what i.m going to do today check fuel lines , replace both filters i'll let you know how it went tonight, thanks again guys.
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#6
06-30-2011, 09:11 AM
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Sounds to me like a plugged high speed jet. The idle circuit normally has it's own feed or uses a very small amount. When you hit the throttle the engine will rev due to the accelerator pumps shot of fuel, but once it uses that it runs out and stalls. Like spare said, it doesn't take long for a carb to plug anymore with the wonderful fuel we now have. I reccomend to all of my customers no matter wat it is, install a fuel shut-off and run the engine out of fuel if you won't be using it under load in the next week. Even idling an engine on the hose often times won't move enough fuel to keep varnish from accumulating. Take away the fuel, and teh varnish cannot deposit and plug up the jets. I for one don't like having to rebuild carbs every month for people as it is an unnecesary hassle for them and me. And it doesn't take but just a little water to get into a carb and slime the jets over to the point that it will effectively plug them either.
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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
06-30-2011, 06:48 PM
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fuel
taking your advice i soaked ,cleaned both fuel filters they were a bit dirty. so i put them baack in started her up and she runs now even at high idle. i even was able to put her in and out of gear many times. i then reved her to about 1500 rpms and she held well. BUT as soon as i pulled back the slightest bit she stalls again. and i pulled the seperator gas smells fine with no evidence of water now what do you guys think
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