when i start it up it usaly runs fine for bout 20 min or so then the idel starts jumpin around then starts boggin like its runnin out of gas then stalls out and then when i restart it it either wont start or starts n instantly dies out i just did my distributor then all this stated to happen tried move the distributor to try to make sure its in time still did the same thing thing i tried the fuel filter same thing kinda stuck on wat to do was thinkin that mayb i put the distributor on 180° out but really kinda nerves bout that