Hi,
I’m fixing up a Johnson QD-11, it has an earlier carb design than most 50s models. It is running way too rich, and even runs at high speed with the high speed needle completely closed off. I placed my finger on top of the high speed jet to make sure it was closed off and the motor still ran at high RPMs just fine. I have double checked all the seals in the carb, and ruled out the high speed jet as the problem. I think the low speed jet must be dumping enough fuel for low and high speed operation. It is very different than most low speed jets I’ve seen other OMC carbs. I can adjust the low speed to idle great, but the low speed jet seems to be dumping too much fuel in at high speed. In the photo I’m pointing to where I think the issue is. Does anyone have any advice about how to get this under control?
FYI, the photo of the jet and carb not on the motor is from a second powerhead i purchased for parts, the carb on the motor has been fully cleaned up.
Thank you
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