New member looking for help

[Toyota 57]

Hi 

i have a 2007 Corolla verso 2.2 diesel recently it's became difficult to start from cold - new glow plugs and relay changed but made no difference- Battery is good and been fully serviced .

the engine almost starts then turns over for between 5-10 seconds before running - it then runs fine with no smoke or problems 

any suggestions would be welcomed 

thanks in advance 

[Khan saab]

Hi 

It can be two things .primer pump or the injector rail .most of time its injector rail .