Hi I have a zaferia 1.7 cdti I lost power last week and had the AA out they said injector 4 had gone took car to diesel injector specialist who replaced the injector which made no difference they then carried out a engine compression test which says I have zero pressure getting to cyclnder 4 but cylinder 3has 36bar I've since been told it could be head gasket so to rule out this I put in a product called steel seal which fixes gasket problems which also has not worked my car is shuddering...
Zafira no pressure
Zafira no pressure