Hi all!

I work in a garage, and at the moment we have a 59 plate 1.2 3cyl Polo with BBM engine code. It has a fault code for Misfire Cylinder 2, we did compression check and 1/3 have perfect compression, but 2 has barely anything! I've never encountered this before so are there any known faults and fixes that I should look into before tearing the block apart?

Thanks!