1987 Dodge Raider Shuts off after 5-6 minutes

I have a 1987 Dodge raider, basicly an imported Pajero. On startup it runs fine but as soon as the choke opens up, it shuts off. It's a 4cyldr 2.6L with a Mikuni dual barel Carb. Any help would be appreciated as we've been trying to figure it out for the last two months.

sounds like dirty carb or possibly intake leak try pluging all vacuum lines including brake booster good luck