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Johnson Outboard model J50PLSIG will not start

Johnson J50PLSIG will not start when cold without quickstart in carb. Starts and runs fine when warm.

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

jaballou
  • 63 Answers

SOURCE: engine not running

Let it dry out a day or so, perhaps in the sun or a warm place. Try again. If it still won't start, try to find a fuel line or fuel jet and inject some compressed air in to blow it out a bit. Good Luck!

Posted on Dec 16, 2008

captainjeffq
  • 52 Answers

SOURCE: 1974 60hp johnson outboard won't run on full throttle.

Carbs probably need to be cleaned and re-built. Common problem in outboards that havent been run in a while

Posted on Apr 13, 2009

  • 40 Answers

SOURCE: 9.9 johnson 4 stroke wo'nt idle

Your cabs need rebuild, something is stuck in the carb or air line cracked

If you have rebuilt the carb check for carb gaskett leak that caused and let the air flow in
When to choke is on the air is block and prevent air flow but allowed small amount of air to keep the engine running
After your engine warmed up the heat in the compression burn much faster so you have to let air in by turn off the choke
Good luck

Posted on Aug 20, 2009

  • 27 Answers

SOURCE: 15 hp johnson outboard misfiring

possibly c/shaft seal
ie induction collapse

Posted on Sep 07, 2009

  • 10865 Answers

SOURCE: 6hp Johnson outboard stalls & quits

go to an auto parts store and get a can of gasoline additive called seafoam. Read the label so you know how much to add to your 6 gallon tank. This stuff works wonders on outboard motors.

Posted on Sep 16, 2009

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1 Answer

I have a 1969 Johnson 1 1/2 hp outboard that I I thought I should clean the carb before starting. so I soaked it and blew it out w air. Starts fine but can't keep it running w/o choking slightly.


Hey David, these tiny carbs have TINY passages for air and gas that are hard to get perfectly clean...is the primer bulb staying tight?.. Did you remove any screws that had springs on them? .. these MUST be set at a certain number of turns out from lightly seated..(the passages these screws regulate must be absolutely clean).. If you are not sure.. take the carb to a qualified professional. ( a profession motorcycle mechanic can do the job too) did you clean the needle valve and seat very well.. clean and check the seat with a swab?..this will tell if you have got it clean and if there are any defects in the seat...

Jul 11, 2017 | Johnson Boating

1 Answer

Johnson outboard stalls when it warms up


Little Johnson outboards are famous for being very easy to start, So- first pump up the gas, then set the throttle open to the neutral stop -pull thru once -then set the choke to fully closed (look down the carb and see if it is) and pull thru 2 more times- open the choke. try again --If it is not running by now you have a bad ignition, or the engine has no compression. - very likely if you are running the wrong spark plugs. You may have some shattered reed valves.

See if the spark plugs are getting wet with fuel.

Sep 08, 2012 | Boating

1 Answer

My 1988 ( i think) 6hp Johnson outboard motor is always hard to start if it is cold. It can take 10 - 15 minutes of pulling on the cord to start it when cold but will start first go every time once it has...


I would suggest you replace the 2 coils. Also, is choke closing properly? The carb if never rebuilt, could cause this problem. A carb kit and 2 coils should not cost much, maybe 20 each for coils and 17 for carb kit. Make sure carb is adjusted properly with outboard in water and warmed up. Mixture screw should be turned in slowly clockwise until engine just pops(lean). Then slowly open it apprx. 1/8 turn. This will aid engine in starting next time. Also, make sure primer bulb firms up when squeezed.

Feb 09, 2011 | Boating

1 Answer

6hp Johnson outboard stalls & quits


go to an auto parts store and get a can of gasoline additive called seafoam. Read the label so you know how much to add to your 6 gallon tank. This stuff works wonders on outboard motors.

Sep 16, 2009 | Boating

1 Answer

1985 40 hp Johnson outboard wouldnt open up and


sounds like your mix is off and it's fowling the plugs. probably too rich. make sure the level in your carb bowls isn't too high. Really sounds like you should clean and bench set your carbs. Especially if a plug change helps but doesn't last, then it's got to be your fuel mix, or maybe timing.

Jul 16, 2009 | Sport & Outdoor - Others

1 Answer

Need to know how to set up carb on 1985 johnson outboard. front adj on the carb got moved looking for starting point to get me close to running.


try disconnecting the throttle cable, loosen carb linkages, assure that both carbs are FULL closed....tighten linkage - and cable ...check for FULL open and close with the throttle....this will be your starting point, advise to get a service manual for your outboard model to correctly adjust the carbs for max performance....GL hope this helps..

Jul 04, 2009 | Sport & Outdoor - Others

1 Answer

Boat engine 1995 Johnson Outboard 70 HP


Ihave a 1991 70 hp Johnson outboard thats hard to start the first time but starts good after that. Seems to be flooded. Starting rpm seems to be low.

Jun 25, 2009 | Boating

1 Answer

Engine not running


Let it dry out a day or so, perhaps in the sun or a warm place. Try again. If it still won't start, try to find a fuel line or fuel jet and inject some compressed air in to blow it out a bit. Good Luck!

Dec 16, 2008 | Boating

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