#2409337 - 06/04/11 08:41 AM
Boat motor question?
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JAY B
6 Point
Registered: 07/09/07
Posts: 922
Loc: Meigs Co.
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I have a mid 80s model 50hp mercury outboard thats acting up. Starts up great and idles fine, blast off fine and after about 100 yards after planing out it starts surging and comes to a stop but never dies. Tried pumping the primer bulb while after planing out when the surging started and it fixed the problem as long as I pumped it about every 10 or 20 seconds! Anybody have any advice on a fix for this problem? Thanks in advance!
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#2409339 - 06/04/11 08:48 AM
Re: Boat motor question?
[Re: JAY B]
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tndrbstr
16 Point
Registered: 10/06/05
Posts: 12157
Loc: knox co tn
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I'd try a new priming bulb first and go from there....
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#2409340 - 06/04/11 08:48 AM
Re: Boat motor question?
[Re: JAY B]
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BuckWild
TnDeer Old Timer
12 Point
Registered: 09/27/99
Posts: 5416
Loc: Memphis or Birdsong Creek
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Is the vent open on the cap of the gas tank? That's what it sounds like.
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#2409347 - 06/04/11 09:09 AM
Re: Boat motor question?
[Re: BuckWild]
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jos3ywales
12 Point
Registered: 10/02/09
Posts: 6025
Loc: Norris Dam
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check the easy stuff first but it also could be a small piece of trash in the carb sucking up.
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#2409349 - 06/04/11 09:10 AM
Re: Boat motor question?
[Re: tndrbstr]
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JAY B
6 Point
Registered: 07/09/07
Posts: 922
Loc: Meigs Co.
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Bulb and line are brand new and I yes the vents are open!
Edited by JAY B (06/04/11 09:11 AM)
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#2409352 - 06/04/11 09:11 AM
Re: Boat motor question?
[Re: JAY B]
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arctic_cat
8 Point
Registered: 11/18/08
Posts: 1957
Loc: Lenoir City,Tn
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sounds like the carburetor
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#2409364 - 06/04/11 09:55 AM
Re: Boat motor question?
[Re: arctic_cat]
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Camp David
12 Point
Registered: 05/31/03
Posts: 5016
Loc: TN
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It sounds like it's either sucking air or possibly sucking the fuel lines closed. Did you use fuel line instead of just vacuum hose when you replaced the bulb?
Just a thought.
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#2409365 - 06/04/11 09:56 AM
Re: Boat motor question?
[Re: JAY B]
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Hawk
TnDeer Old Timer
12 Point
Registered: 09/03/99
Posts: 6162
Loc: west tenn.
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Bulb and line are brand new and I yes the vents are open!
Check the pick up line and strainer in the tank.
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#2409380 - 06/04/11 10:49 AM
Re: Boat motor question?
[Re: Hawk]
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utfan1
10 Point
Registered: 12/31/06
Posts: 3617
Loc: cleveland,tn
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ethanol crap has eaten the line.replace and only run straight gas/oil mix.
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#2409410 - 06/04/11 12:19 PM
Re: Boat motor question?
[Re: utfan1]
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mike243
14 Point
Registered: 09/06/06
Posts: 9937
Loc: east tn
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fuel pump
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