still trying to get better than 20mpg on my 87 polo. i found that the mixture plug on the pierburg 2e3 had been removed and i suspect that the mixture was enrichened by previous owner to compensate for a torn rubber carb flange which i have now replaced.
what are the symptoms of a mixture which is too lean or too rich if i have a go at tinkering with the screw myself. i will keep a note of its current position to be able to revert if necessary.
thanks