any outboard motor guys??

biglefty20

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Joined
Jul 9, 2008
Messages
6,628
Location
Spring Hill/Giles County
I have a Johnson seahorse that is from 60's... it is 18 horse... i have been running it in a barrel getting it ready to take out but its acting up a little.... it always starts and runs... it runs great when first started and has good power... if you keep it full throttle or close it acts like its getting bogged down..my father in law called it loading up... it does this randomly... sometimes runs with great power and sometimes not much at all... it had a new carb kit on it before i got it...i put new plugs on it and it seemed to help but went back to doing what it wanted... the plugs are getting very wet.. it seems like its getting too much gas

What yall think
 

jos3ywales

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Oct 2, 2009
Messages
7,684
Location
Norris Dam
sounds like some little piece of trash in the carb thats getting sucked up at higher RPM bout guarantee seen it to many times
 

Slaughter-06

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Joined
May 3, 2001
Messages
8,391
Location
Dyersburg,Tn.
does it idle ok?
If so before you spend a lot of time and money try a new tank and hose.
Mine was running fine on idle and slow speed but when I opened it up it would bog down almost like it was flooding out or something. I saked a friend and he said get a new tank, I did and it fixed my problem.
 

brmaster

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Joined
Jun 27, 2010
Messages
863
Location
TN, Shelbyville
above items, and maybe run some cleaner through with the gas, cold be some clogging and releasing as said above, also could be some OLD GAS not run out of carb and lines from last year maybe jelled up and is stopping up stuff as well.
I have heard some people really believe in this Sea Foam stuff, maybe that could help
 

Buccaneer

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Joined
Aug 29, 2006
Messages
882
Location
Hendersonville
Seafoam or Mercury Quick Kleen in the aerosol can. Use Marine Stabil or Startron in every tank and Seafoam with every other tank fill. Also, if you are goosing up the throttle while in the tank without the prop in gear you're asking for trouble. You can easily exceed the maximum RPM's without the resistance of the prop turning under water.
 

stik

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Joined
Mar 12, 1999
Messages
22,151
Location
lenoir city,tn
biglefty20 said:
its sitting in big drum of water ... hope that's all it needs

as long as you have a good stream from the motor, you'll be ok.

it could also be something as simple as the gas cap.
 

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