Where do I start to diagnose this (starting problem)

[Carrot]

Hoping to get some pointers before I start taking bits apart

Corsa B - X14XE engine (DOHC 1.4l 16v injected)

Has trouble starting. Turns over OK, but to get it to start, you have to give it a bit of throttle or it will turn over indefinitely. Once started, runs absolutely fine and idles all OK.

No signs of oil leaks or head gasket failure. Doesn't matter if it has just been run or has been sitting for a while.

I am possibly thinking air leak from somewhere?

[pk500]

get it plugged in must be a sensor

[Carrot]

pk500 said:

get it plugged in must be a sensor

No codes and no eml sadly

[hombrepaulo]

Gunked up throttle body? No air getting through until you tap the throttle?

[Carrot]

hombrepaulo said:

Gunked up throttle body? No air getting through until you tap the throttle?

Thats what I'm thinking. Was apparently cleaned as part of some other work a year back, but there again they probably just did the "lets not and say we did" approach.

[thinfourth2]

You could try giving it a bit of throttle everytime you start it?

[Carrot]

thinfourth2 said:

You could try giving it a bit of throttle everytime you start it?

Looking for a fix, not a workaround you tool...