2004 Johnson 3.5 running bit groggy

corsur

Cadet
Joined
Aug 25, 2012
Messages
6
Hello all from N Ireland Just picked up a 2004 Johnson 3.5 2 stroke outboard Model J3RSRE . on running it in my test tank its seams a bit groggy, also in gear at a set throttle it seams to rev up and down slightly ? don't know how long the fuel has being laying in it though.
 

nwcove

Admiral
Joined
May 16, 2011
Messages
6,293
Re: 2004 Johnson 3.5 running bit groggy

freshen up the fuel, have a look at the condition of the plugs. modern fuels do loose there punch rather quickly.
..and welcome to iboats.
 

Daviet

Fleet Admiral
Joined
Sep 24, 2008
Messages
8,958
Re: 2004 Johnson 3.5 running bit groggy

Might want to try some fresh fuel mixture in it. Make sure to flush all the old fuel out of the system.
 

corsur

Cadet
Joined
Aug 25, 2012
Messages
6
Re: 2004 Johnson 3.5 running bit groggy

Can you tell me what spark plug I should get for this engine thanks
 

corsur

Cadet
Joined
Aug 25, 2012
Messages
6
Re: 2004 Johnson 3.5 running bit groggy

Thanks guys fresh fuel and new plug seams to have done the trick.
 
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