A problem which has manifested itself the last 2 times I have used the Midas, usually occuring on a light throttle. Driving along and the engine will suddenly die, without an warning. No spluttering or missing. The engine would turn over fine, but no sign of life. The first time, I was about a mile from home, so walked home, rang the breakdown service from there, was told 11/4 hours, so had a cuppa before walking back. Still dead, so I took out all of the fuses and the 4 main fuses. Tried again and away it went, so quickly drove home and cancelled the breakdown callout. Went back out to the car and would not start, though it was fine the next morning.
That was about 3 weeks ago during which time I have acquired a Mk 1 so this evening was the first time I have used the Excelsior since, though I did check all connections to the ignition side and found nothing amiss. About 9 miles from home , it again suddenly died and no sign of life when turning over. When the breakdown truck arrived, after about an hour, it fired up immediately and continued to tick over. He was all for signing off the job and leaving, but I insisted he follow me home. It died again within a mile, so he loaded me onto the truck. At home, it still would not start, so we pushed it onto the drive. I went out a short time ago and it fired up immediately.
On both occasions, the first thing I did was to remove the filler cap, in case the vent was blocked. There was no hissing when I did that.
The car has the 1.4 8 valve engine with carb and no cat. The donor was a 1990 Metro Si