93 B2600i Missing at Startup...

My B2600i has an interesting problem...It is missing for only about 5-10 seconds at startup only when cold (Air Temp & Engine Temp). I notice a Gas smell (running rich due to missing), but no smoke. This just started the other day. After 10 seconds the truck runs great and has no problems for the rest of the day.

After purchasing the truck last month I went in and replaced the plugs, wires, dist cap, dist button, hoses, belts, oil, coolant, air filter, and PCV valve.

Could this be an issue with the Coil...It is still original?

Coils usually break down when hot not cold. There is a temp sensor integrated into the MAF.Thta may be ur problem.BJ

try replacing the o2 sensor also.