can my 2007 110 puma really have a failed injection pump after 55k miles? I'm gutted and soon to be bankrupt!Anyone else had the prob? computer says a prob with fuel reg valve,which I changed (138£) but still have dramatic power loss when going at 45 to 50,then it recovers and is ok for another 20 mile .Wish I still had my series IIa with a Perkins 3.3