carb adjusted, now engine stalling

[RedAhtamn]

Hello all,

heres the deal, the engine was not starting all that easily so I decided to adjust the carb. I have a 390 with the motorcraft carb. I made sure the truck was warmed up and ready to go. I adjusted both front screws and the idle screw until the engine was running well. When I turned the truck off to button everything up it started sputtering and stalling. it smells as though it is running extremely rich now and I have re adjusted multiple times with no luck. Any ideas?

[BRUTUS_T_HOG]

have you checked your dwell, and timing before adjusting the carb?

[RedAhtamn]

yes, it all appeared ok. the truck fires right up now, it never was able to start that well; however, now when I shut the key off the engine still clunks and sounds horrible. so maybe its out of timing now. I am almost suspecting an air leak somewhere so I am going to try and check that.

[mkpj1]

Did you set the mixture screws with a vacuum gauge or by best idle. Is the engine "diesling" when you shut is down,..running on. That's usually a sign of your idle is too high or too rich. Give us a little more back ground on what lead up to the stalling. Change fuel filter? Fuel pressure?