Reply To: JW 14 compression numbers?

[20mercman]

Well, a bit of an update. Again, thanks so much for the high quality posts! I greatly appreciate it. I did go back to the basics again today. I went back through the magneto, the points are spotless, ohm well, I reset and synced them 180 degrees. It has good spark. I also went and resent the carburetor through the ultrasonic cleaner….it is spotless. I have the low speed further out than the 1.5 turns, the high speed is about where you say. The high speed is very fussy, it likes it at a very small range. It will now idle, but not as it should. When it is down low, it still will not run much below the “START” range. The throttle pick-up is open at this point. As you said, I thought that these should idle with the throttle closed. The throttle cam looks like it is opening the throttle properly. One thing is that when I have it running at or near idle, It looses power on the top cylinder more than the bottom. It will smack you but good, so I know it is not loosing spark. I am going to pull the head, and also the reed block to make sure I don’t have poor seating reeds. By the way fleetwin, these are both Johnson’s, 58 & 61 I do have a Lightwin, but I shouldn’t have mentioned it and added confusion to the topic.

Steve