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Mechanical Question - 50hp Evinrude
#2790878
04/22/19 12:48 PM
04/22/19 12:48 PM
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Joined: Aug 2014
Posts: 19,982 Northport, AL
GomerPyle
OP
Impatient Stinky Britches Wearin’ Off-Roadin’ Guru
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OP
Impatient Stinky Britches Wearin’ Off-Roadin’ Guru
Joined: Aug 2014
Posts: 19,982
Northport, AL
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May have a chance to get a 1754 aluminum boat super cheap, due to a mechanical issue that the current owner doesn't want to fool with. It's got an older 50 horse Evinrude (similar to the one pictured below). Motor set up for several years before he decided to start using it again. It runs great on a hose in the driveway, revs fine, pumps water well, etc. But, on the lake when it's under a load, it just bogs down and doesn't have any "oomph". What are the most likely culprits? or is there just not enough info? Also, what kind of reputation do these motors have, in general?
Last edited by GomerPyle; 04/22/19 12:52 PM.
There are 3 certainties in an uncertain world:
1. All Politicians Are Liars 2. All Gun Laws Are an Infringement 3. Taxation Is Theft
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Re: Mechanical Question - 50hp Evinrude
[Re: GomerPyle]
#2790904
04/22/19 01:34 PM
04/22/19 01:34 PM
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Joined: Nov 2015
Posts: 264 Decatur, Al
znrichie
4 point
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4 point
Joined: Nov 2015
Posts: 264
Decatur, Al
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My 40 Johnson would run great on a hose, but under a load it bogged every time. Ended up changing the powerpack and it ran great.
May not have killed anything, but always a good time
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Re: Mechanical Question - 50hp Evinrude
[Re: GomerPyle]
#2790977
04/22/19 03:33 PM
04/22/19 03:33 PM
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Joined: Jan 2002
Posts: 10,484 Bham
Dallas County
Booner
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Booner
Joined: Jan 2002
Posts: 10,484
Bham
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Jets are clogged up or the fuel hose is clogged/restricted.
not sure what the best way to handle them is but they shouldnt be on tv and gettn married and raisin kids
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Re: Mechanical Question - 50hp Evinrude
[Re: Dallas County]
#2791053
04/22/19 05:15 PM
04/22/19 05:15 PM
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Joined: Oct 2008
Posts: 6,717 Selma
odocoileus
14 point
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14 point
Joined: Oct 2008
Posts: 6,717
Selma
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Jets are clogged up or the fuel hose is clogged/restricted. Yep my first step would be to replace all fuel line/pump and rebuild the carb,
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Re: Mechanical Question - 50hp Evinrude
[Re: GomerPyle]
#2791241
04/22/19 08:47 PM
04/22/19 08:47 PM
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Joined: Jul 2011
Posts: 39,377 Marshall County
FurFlyin
Freak of Nature
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Freak of Nature
Joined: Jul 2011
Posts: 39,377
Marshall County
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As already said above, rule out the fuel system first. Replace all the fuel lines, completely. New primer bulb too and not a Walmarks kind. Get an OEM primer bulb. Mercury seems to be the most common. Rebuild or buy a new fuel pump. Take the carb apart and clean it. See if you can find a manual to tell you the correct height to set the floats at while you're at it. New gaskets on your carbs too.
Save yourself lots of time and frustration, bite the bullet and get it over with. It won't cost much anyway.
I screwed around with my 115 yamaha for a year and couldn't get it to run right without quickly fouling the plugs. I finally bought rebuild kits for the carbs and haven't changed plugs since. I didn't buy fuel hoses for my motor, I made all of them from 3/8 Gates hose. Next time the carbs come off, I'm putting the OEM fuel lines on it. Too much trouble getting the hoses on. You probably just have one carb on that motor so it will likely be easier.
Even if it turns out to be something else, you're still going to need to replace and rebuild the fuel system. It will not be wasted money.
If my people, who are called by my name, will humble themselves and pray and seek my face and turn from their wicked ways, then will I hear from heaven and will forgive their sin and will heal their land. 2 Chronicles 7:14
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Re: Mechanical Question - 50hp Evinrude
[Re: Jakethesnake]
#2791486
04/23/19 08:42 AM
04/23/19 08:42 AM
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Joined: Aug 2014
Posts: 19,982 Northport, AL
GomerPyle
OP
Impatient Stinky Britches Wearin’ Off-Roadin’ Guru
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OP
Impatient Stinky Britches Wearin’ Off-Roadin’ Guru
Joined: Aug 2014
Posts: 19,982
Northport, AL
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The best advice i can give is to send me the address to the boat before you buy it. So i can go buy it lol. If it has low compression then thats why he is selling it. Gonna cost more than its worth. But might be a simple fix. Take it to a shop if your not comfortable checking it. But compression check is easy. Make sure you know exactly what the compression is suppose to be though before you check it. If I do buy it, it will be because I was able to get it cheap enough that even if I have to buy a motor, it's still a decent "deal". Basically buying the hull and trailer and the motor is just gravy. We'll see if it works out...
There are 3 certainties in an uncertain world:
1. All Politicians Are Liars 2. All Gun Laws Are an Infringement 3. Taxation Is Theft
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