lumpy acceleration

[afcbadam]

can anybody help. car has lumpy accelerartion. i have a mg zt 1.8 turbo. when accelerating from low revs in second and third gear i get 2 lumps/hesitations of acceleration normally about 4 and 5 k. they feel almoust likes bumps or like you are dabbing the throttle quickly. when accelerating from higher revs ie 3k+ i dont get any lumps and the car goes just fine

[shroonie29]

Sticky wastegate perhaps?

Shroon

[afcbadam]

is there any way off telling if its sticking. are there any other turbo owners out there that have had a similar problem. could it be the turbo its self

[afcbadam]

just been looking on the mg forum. seens like sticky wastegates are a common problem on the 1.8 turbo. good job its under warrenty