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Yamaha stalls
115 2003 4 stroke I was out today with my son and his 115 4 stroke yams stalled at idle, when we ran the engine it seems fine when your going but when you idle down it stalls out what can I check with a 4 stroke engine? Thanks for any replys
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love to fish 
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#2
08-20-2017, 08:42 PM
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first thing do a completer tune up, new plugs, fuel filters, compression test and spark check. If the plugs are dark and fouled, check the engine oil, if its over filled, dark and very thin, you probably have a stuck thermostat. Replace the spark plugs, thermostat and change the oil. If the plugs look fine, check the shift switch to make sure its not sticking, it will shut two cylinders down at low rpm Next, get some one with a scan tool on it and check for codes, and check the Idle Air controller, beyond that, id have the injectors cleaned.
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#3
08-20-2017, 10:09 PM
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2003 should be a carb engine, shouldn't it?
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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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#4
08-21-2017, 04:50 AM
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Ferm It's a fuel injected
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love to fish
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#5
08-21-2017, 04:52 AM
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I think it's a 03 it's my sons motor
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love to fish
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#6
08-21-2017, 06:35 AM
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all the 115 4 strokes were EFI, carb version of that motor was 90/100 hp
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