hi im new to the site,

i have a vectra 2005 2.2 pertol (engine type z22yh)

My problem is i drove the car yesterday and it was fine no problems at all, parked up over night went to go to work the next morning and it wouldnt start straight away like normal, when you go to start it takes a while turning it over then it will fill like its starting and you stop the starter motor and then it takes about 10-15 seconds to get up to idle and then will idle all day long but as soon as you put you foot on the gas (like you would normally to rev) it will just cut out sounds abit like not enough fuel or something, but if you rev it very slowly you can rev it right up to max and hold it at 5000rpm with no problem. but starting is the same evertime but if you jump start it it will start first time. once the car is started and on idle you can drive it by using as little throttle as possible like driving just on idle power, if you use the throttle as you would in a normal car it will just cut out.

There are not lights on the dash but i did put the car of a fault reader and it came up with air flow meter so i had it changed and codes
cleared and re scanned and no fault codes but still have the same problem, I have also changed the spark plugs and taken the throttle body off and cleaned but nothing still the same.

I have run out of ideas and can only think it is a fuel problem.

Can anyone please help me

many thanks matt