Search results

  1. 7

    1973 25 Hp. Johnson Running Rough

    lately, I've noticed what looks like fuel leaking out around the carburetor. Considering the motor seemed to be running fine and then suddenly began missing, at full throttle, could this be a carburation issue, possibly separate from the condenser/spark issue? I rebuilt the carb using a kit and...
  2. 7

    1973 25 Hp. Johnson Running Rough

    My bad, "low speed."
  3. 7

    1973 25 Hp. Johnson Running Rough

    It was running fine. It started sputtering at full throttle after running for about an hour. I ran it in that condition for about an hour getting back to the dock. The condenser for the top cylinder was found to be arcing. The condensers checked out okay on the multimeter and the arcing stopped...
  4. 7

    1973 25 Hp. Johnson Running Rough

    Oh yeah, I disconnected the coils from the kill switch to make sure I wasn't dealing with similar symptoms from different sources but no change.
  5. 7

    1973 25 Hp. Johnson Running Rough

    I did try turning the high speed mix to lean till she coughed and back to normal. No help. Is that what you meant?
  6. 7

    1973 25 Hp. Johnson Running Rough

    It's definitely running rough. At last check I had spark to both cylinders. She cranks up fine and idols adequately but when its throttled up it sputters. it speeds up some but the rpms never get nearly as high as they should be. No power, tank run, in neutral, and circulating fresh water. I...
  7. 7

    1973 25 Hp. Johnson Running Rough

    I've been "probably" over thinking this. The motor ran fine after the tune up for about an hour, various throttle positions, before it started missing. I'm thinking a combination of distance, time, and insulation. I think it was insulated and far enough away, barely, from the condenser case that...
  8. 7

    1973 25 Hp. Johnson Running Rough

    I redirected the wires, buttoned it up, pulled the plugs, and she sparked fine! Duh!
  9. 7

    1973 25 Hp. Johnson Running Rough

  10. 7

    1973 25 Hp. Johnson Running Rough

    I checked both condensers and they're good. However, Look like an issue to anyone?
  11. 7

    1973 25 Hp. Johnson Running Rough

    Disconnected coils from kill switch, pulled plugs, turn over motor... no spark top, bottom spark fine. I've inspected all the wires and connections involved and they all look good to me. Next stop, multimeter on the condensers I suppose. I tuned my first car, a 68 Camaro, "under the shade...
  12. 7

    1973 25 Hp. Johnson Running Rough

    Lastly, can't I confirm a problem with the kill circuit by just disconnecting the switch where in connects to each coil and running the motor?
  13. 7

    1973 25 Hp. Johnson Running Rough

    In turn, I disconnected each coil/points from the kill switch where the two wires connect to one and checked continuity from the connection /one wire through the kill switch to battery/frame ground, no continuity regardless of kill switch position for either connector. The only continuity...
  14. 7

    1973 25 Hp. Johnson Running Rough

    Thanks. I'll do that. When I was running the wires from the ignition coils down I wondered about that as my kill switch is old and looks pretty worn.
  15. 7

    1973 25 Hp. Johnson Running Rough

    Update; No spark top cylinder. I just replaced the driver coil and no change. Pulled both plugs, left one in the boot and turned over the motor. Took turns with each plug. No spark top cylinder. Swapped out top ignition coil with one from a similar motor, no spark. Swapped out the two new...
  16. 7

    How much water?

    Seems to know his stuff. I meant no offense with my attempt at humor. Regardless, would certainly like to hear his opinions. I have some skill but very little experience! I have an old Mercury 35 on a party boat and a 1980 Evinrude 225 on my first love. Both are on the restoration list.
  17. 7

    1973 25 Hp. Johnson Running Rough

    "Lap the tapers"? I used an impact wrench. I'll check the key when I pull the flywheel to replace the driver coil.
  18. 7

    1973 25 Hp. Johnson Running Rough

    Me again. Same motor, new issue. After the water circulation issue was solved, I took the motor to the lake. It ran fine for approximately an hour, mostly full throttle, sat off for a couple of hours, and then started fine for the return trip. About 10 minutes in, full throttle, it started...
  19. 7

    How much water?

    Let me begin this post by apologizing in advance to all board members. Racerone... you are my Obi-Wan Kenobi. Padawan is proud to report he reassembled the foot as instructed by the master of outboards. Padawan noticed the assembly felt different and the copper tube appeared to be in a different...
  20. 7

    How much water?

    I can put it back that way when I put it back together. No big deal. It was definitely in the proper spot as I double checked through the shift connection access door when putting it back together the last several times! Compression was 142 top, 141 bottom, rock solid. There are no leaks, noise...
Top