golf 2.0 gti 16v running fault

[Sumner]

at about 3000 rpm there is a hesitation. yesterday it rained and the hesitation had gone, only to return later that day when the roads had dried out. now even worse and between about 2000 and 4000 rpm. any help would be very welcome.:1zhelp:

[ash_00_2004]

I dont have that exact problem with mine, but i do find on colder, especially very rainy days i get unbelievable performance from my car, but nice sunny n dry, just not the same. weird