90 Mazda b2200 se-5, Boggs down and dies in neutral
 

hey I just a bought 90 mazda b2200 se-5 manual carb. It likes to bog down and die when I put in neutral or in first gear even if i continue to hold clutch. almost always happening but sometimes it will stay running. I have to heel-toe most times that I stop to keep the revs up and keep it from dieing. sometimes it gets really jumpy when in first or second gear as well. was thinking mabye it is the sending unit fuel screen is gunked up or rusty mabye. but wanted some input thanks