Modern Petrol!

[Bill Sheehan]

As Russell suggests I would say that it is some form of sealant that has started to disintegrate  When we repaired Russell's tank I removed a dustpan full of the stuff. Try looking inside the tank with a long dentist mirror and bright torch. 

  Glad the petrol tank repair is holding up Russell

Robin - I wonder if it was in fact a sealant gone wrong with the latest petrol.  I had the same problem with my 1952 Lanchester Leda - sometimes would only go 100 yards before cutting out.  Although the carb has an internal filter and the car has an in-line filter as standard, still gunk got through. I then fitted an extra (modern) in-line one.  Still problems.  Removed the tank, sent it off to be acid-bathed & steam-cleaned.  Went back, paid for the job, then they couldn't find the tank!   Took them a couple of months to locate it.  Not the sort of problem one would have with a Seven tank and if it did, would be easy to find another tank.  An Oil Company expert gave our Club a talk a while back & pointed out the modern petrol is only good for one month on the shelf before it starts to deteriorate.  Perhaps if the  car is unused for a period it gives time for the fuel to eat away the sealant?  Good Luck with the Chummy.   Cheers,  Bill