Cold starting,misfiring

[Davydave]

Hi all.my 2011 model has developed a cold starting issue.it starts immediately, but then starts misfiring,running on 2/3 cylinders.it wont rev up,and does this for a few minutes. I have spent a fortune trying to remedy it.its been into Vauxhall, and has no fault coming up.so far its had ;all new pressure sensor glow plugs,new boost pipe,boost control valve,new maf,fuel filter,dpf and egr delete (to try and solve it,not for performance lol),and a leakdown test on the injectors (all good).so i now dont know where to turn to next.all help greatly accepted!its only done 55k as well.

[Vauxhall Owners Club]

Hi....welcome to the Club

I would start by carrying out a compression test on all the cylinders as it could be a sticking piston ring or similar which is not releasing until it has warmed up and expanded