RepairPal Certified shops can diagnose and repair your 1992 Dodge D150. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
Smell the oil stick and see if it smell like gas if it does you could be getting gas in the oil from the carb overflow or it could be blow back from the plugs solenoid or distributer then change the effective part hope it helps