Shimming injectors to help cold starts.

I try shimming my injectors to help with cold starts after checking all the usual suspects.  Truck was moody in 60 degree weather.  Plugging it in was the only way to help and that seemed like oil thickness issue.

• #autos_vehicles
• #f_250
• #f_350
• #f_450
• #73_powerstroke
• #73_cold_start
• #cold_start
• #injectors
• #shimming_injectors