really strange problem with 420a

[PuNcH DrUnK]

so, my wifes 95 eclipse gs had a bad headgasket, replaced the gasket and now the car wont start, i have confirmed....

cam timing is right on
fuel pressure is good and fuel is making its way into the combustion chamber,
compression is 140-155 on all cylinders,
i have spark on all cylinders,

so since this began i have replaced,
timing belt,
spark plugs,
coil,
cam sensor and magneto,
crank angle sensor,
map sensor.

any help would be very much appreciated as i am totally lost, i am mechanically inclined so im not totally retarded. PLEASE HELP!!!!!