I've bought a peugeot 205 1.9 gti as a non runner.Before i bought it i knew that the cam belt had snapped a new head fitted.The problem that i have is that there is no oil getting to the head.I've changed the spring and piston in the oil pump but to tell the truth i haven't checked if there is any drive to the pump..if there is drive to the pump what else could be the most likely problem.I've removed the oil pressure sensor from the block and there doesn't seem to be any oil getting up there.Could damage have been done to the bottom end of the block when the cam belt snapped?.Could the head gasket have been fitted wrong?.Any help would be appreciated.