OK, I give up. The front float bowl, about fifteen minutes after you shut
the car off, will hiss or "sizzle" and petrol will run out of the overflow
tube. I have replaced the top, put in a new Gross Jet (both carbs), set
the float level within specs, and checked everything else I can think of.
I detached the emissions hoses thinking that maybe back pressure was
causing the petrol to pressurize and escape. These are Australian spec
carbs fitted to a '73 TR 6 so no jokes about the float bowls being upside
down on this side of the hemisphere. I tried driving upside down and that
didn't change anything!
Any more ideas? I am tired of getting en miles to the gallon because all
the petrol goes on the ground. Fortunately no fires yet!!
Michael
St. Louis, U. S. of A. or thereabouts
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