Re: Carb plugs

[LLOYD LAUTNER]

If it’s not broke, why fix it? I have very very rarely found anything wrong with the low speed mixture passages on the 50’s OMC’s. Sometimes the float bowl gasket is swollen and blocking the hole, or mixture needle damaged, but fuel drains downhill, so it doesn’t collect in the top of the carb. Granted I only work on fresh water motors, but why not just check the circuit before ripping out the welsh plug?
Remove the low speed mixture needle and the float bowl. Open the throttle valve so you can see the small orifices in the top of the carb throat/venture (2 or 3 depending on model). Plug the hole from the float bowl with your thumb while blasting carb cleaner down the needle hole. Then plug the needle hole with your thumb while blasting carb cleaner into the hole in the float bowl flange that leads to the low speed orifices. If you can see carb cleaner spraying out the orifices into the carb throat, the circuit is AOK and not plugged up. No need to remove the welsh plug.