Engine trouble

[smoker]

Hi all, hope someone here knows what this is, my engine keeps flooding usually when I disconnect the battery or sometimes when the fuel rail is disconnected. When I connect back up again it wont fire atall and just stinks of petrol . Only way to get it to start again is to take out the plugs and heat them with a blow torch then it starts no trouble. After I have done that it will start ok for the next few days.

Its had the block rebored, new turbo, plugs, leads, cap . and the injectors have been serviced by a fuel injection specialist. I'm thinking it could be the fuel pressure regulator but I don't know how to check this ??. Any suggestions much appreciated