CAR CAME IN WITH MISFIRE AFTER SOME CHECKS WE FOUND THAT CAM LOBE AND BUCKET WORN ON NUMBER 2 CYLINDER, REMOVED HEAD AND TOOK TO ENGINEERS WHO OVERHAULED THE HEAD AND REPLACED CAM. WE REFITTED IT AND REPLACED CAMBELT AND WATER PUMP. DONT WANT TO START. NO CODES STORED. SEEMS TO BE A LOT OF VAC / PRESSURE AT FUEL FILTER, WHEN A BIT OF EASY START SPRAYED INTO MANIFOLD IT DOES FIRE. TOOK INJECTOR OUT AND THERE SEEMS TO BE FUEL COMING THROUGH HEAD.A NEW HARNESS FOR INJECTORS WAS FITTED A MONTH EARLIER. WIRNG OR INJECTORS FAULTY ?ANY ADVISE WOULD BE GREAT. THANKS