ok mate i have a major update it was the 4th injector that was causing the problem ford wanted £300 for a new injector so i took the car back and fitted a second hand tested injector with same part number as the original and the car started straight away but the car keeps showing a fault on the diagnostic scanner p0100 & p0103 which says maf vaf mass flow circuit a malfunction & Mass or Volume Air Flow Circuit High Input i tried resetting it and it comes back on now heres the worst part i drove the car 2 miles and all was great then when it warmed up you get clouds of white smoke coming out of the exhaust and backfire with the engine light on then if you leave the car to cool down say 30 mins then start it it starts straight away and no smoke untill you drive for about 2 miles then there comes the white smoke put scanner on and again Mass or Volume Air Flow Circuit High Input shows up now i dont know if the air mass sensor has gone faulty or the new injector does need recoding back to the ecu ive checked all wiring to the sensor and arrround and all ok