Corsa D 1.2 16v too rich no error codes

[wodorof]

hi,
i have problem witch petrol corsa D z12xep,
it works on way to rich mixture, and has no stored errors,
MAP sensor reading looks wrong, at idle sometimes it is around 75 kpa, sometimes 101kpa,
sensor was replaced but nothing`s changed,
temp sensors, lambda looks fine,
intake manifold is checked, and there are no leaks.

Any ideas would be great!

Thanks in advance!

SOLVED
It was a timing problem
it seems that wrong type of timing chain lock was used,
after changing timing car works fine

[Meat-Head]

Fuel pressure too high, what color are the spark plugs? Really black?

[autoden]

Check mass air flow sensor and trunking for unmetered air.

[wodorof]

Check mass air flow sensor and trunking for unmetered air.

car is not equipped with one, we checked for leaks and found nothing,

]
Fuel pressure too high, what color are the spark plugs? Really black?

I will check pressure, the plugs are black but not like pitch black