Reply To: JW 14 compression numbers?

[20mercman]

Thanks for all of the replies fellas! No I have not had the head off yet. I did try both carburetors on the motor. Both went through my ultrasonic cleaner. (I don’t know if you folks have used these, but they really clean out hard to reach passages.) In any event, it will idle for a bit, 20 or 30 seconds, but dies out and does not want to stay running when you advance the throttle. I can adjust the high speed, and get it to be able to throttle down, and then back up, but when you then adjust the low speed, it does not stay in tune. As for the compression gauge , it does have the check-valve on the gauge end. I had not thought of that….. Back to basics, I recheck things over again. I do find it hard to believe that both carburetors would have the same issues. Carb sync, I am a Mercury guy, so not as much experience on these little guys, but I will check these tips out. One more thing is that the idle is when the throttle handle is in “RUN”, not even down to “SLOW” Perhaps that may be a clue. Our JW-10 and Lightwin runs like a clock, so I know how nice these can run.

Thanks again!

Steve