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  1. O

    Johnson 25hp problems

    Hello gents, just a update I took the boat down to the slip way today and launched it. I bought some new super unleaded and the engine ran like a dream. Thank you for all the help and support
  2. O

    Johnson 25hp problems

    Good evening gents, following all your advise I managed to get the engine running. The problem was a perished o-ring on the fuel primer. It’s still running abit rough as you can see from this video I will attach. Should water be coming from the exhaust🤔🤔🤔. My mind is blown with this engine it’s...
  3. O

    Johnson 25hp problems

    When I push the key in the electric primer clicks and release a shot of fuel. Is this correct? Or should it be a continuous flow? until I release the key. Thanks for the help I really appreciate it
  4. O

    Johnson 25hp problems

    hi racerone, I lift the choke lever fully up and push the key in when trying to start.
  5. O

    Johnson 25hp problems

    Hello gents, sorry for such a late reply I finally managed to have another look at the engine. I followed oldboat1 advice. The engine fires straight up and would continue to run with fuel being sprayed into the carb. I have cleaned the carb and also put a carb refurb kit on the engine it is...
  6. O

    Johnson 25hp problems

    Both cylinders was even on compression if I remember correctly I think they was about 120psi, I will do another compression test. And post the readings on here. the spark does jump a gap Of 1cm Easily and I have replaced the impeller. I’ve not checked the pump Diaphragm yet.
  7. O

    Johnson 25hp problems

    Hello mate I have removed the hose while cranking it has a good fuel supply it’s also had a fuel carb rebuild all jets cleaned out.
  8. O

    Johnson 25hp problems

    Hi guys sorry it’s taken me a while to reply. Had some major surgery to my hands what has put me behind a tad. I am still having a problem with the engine adding to the list above I have replace the following Cdi units Fuel solenoid rebuild Plug caps and leads I have noticed it seems to be...
  9. O

    Johnson 25hp problems

    I’ll im sure it’s the later model I have attached some pictures below. I will check the spark gap again. And get back to you
  10. O

    Johnson 25hp problems

    Hello Everyone I am in need help, I have a Johnson’s 25hp 2stroke. it’s starts up for a split second and then cuts out, It has good equal compression on Both cylinder. A good spark, I have changed the following Fuel tank Fuel line and one way valve New fuel pump Carb rebuild kit Spark plugs I...
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