We've received an MGB with an overflowing carburetter. The gasoline filled the engine and I drained some two gallons of gasoline/oil mix from the sump. This isn't good for the bearings, but it sure cleans out the inside of the engine! Upon examining the car, I noted that the automatic choke, which relies on hot water from the cylinder head to operate, was not connected to the head at all, but to the heater return line! The only way this choke could come close to working was to have the heater on! Then, it would have had to have been a warm day, as the coolant loses much of its heat in the heater matrix.
Well, gosh, I see I still cannot upload pictures. These shots will have to wait until I've got a little more time to figure out what I'm doing wrong, here.
Give us a call, we're happy to receive your MG or other classic British sportscar for work!