Connor,
As Alan pointed out every SU carbed car has this problem from time to time.
It is the same for mine. But tapping does not always remove the symptom.
Meanwhile I am kind of expert in taking apart the carbs and putting them
together. I exchanged the needle to a grose-jet, which improved the problem.
The latest things I did was to check the float and the lever in the float
chamber and found out that the lever did not have the right curve and the
float had a dent where the lever might get stuck. I tried to get new floats
but the things I got were more rough on the top than the old ones. So I am
still waiting for better ones.
Maybe you should check all the gaskets too. Once I had the problem with a
bad gasket below the grose jet.
And even the top lid of the float might have a small crack which might cause
the same problem.
Reinhart Rosner
55 100 BN1
Vienna - Austria
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