Thanks for the comments. Spent some more time with it. Disconnected the Oxygen sensor to see if there was a difference, their wasn't. Replaced the fuel distributor with the original (a spare was swapped) checked all air connections, everything looked fine.

Interior of air duct housing was wet with gas...

Will try unplugging the cold start valve and see what happens.

Now thinking that I have a spark problem. Coil? I'll try swapping that out.

Regards, Lawrence.