Matt.flintham

Hi I am new to the c8. I have got the 2l hdi engine. Only had the car a few days running perfect then on a 10 minute stop (engine off) the car wouldn't start for another hour. It would turnover and no other faults showing on dash. Car does struggle to start like the glow plugs are not working but was also told it could be a injector fault but car ticks over as normal and runs perfect. Any help plz. Thanks in advance