can anyone please me, i am at my wits with this car of mine, its a 54`plate ford galaxy its over fueling, on about 30 quid of diesel , i am getting about 100 miles and that its, its costing me a bloody fortune. there is no diesel leak.no thick black smoke. no warning light nothing.i have been told. with no warning light, the diagnostics will not pick it up, so i am at a total loss, anyone advise please cheers charlie