1.8 diesal turbo on a p coming off motorway went to change down van cut out lifted clutch started again but wont tick over and wouldnt start unless i pressed priming pump replaced priming pump and filter today still wont start priming pump goes soft when trying to start give it a push she runs for 30 sec the goes to die please help someone running out of cash to keep poor girl on road shes only done 70000 miles