Hi !
So i've checked :
the valves clearances : all is in the specs (tight side however, but it was cold ,10°C or 50 F ,when i measured the gaps)
the timing belt is in the position it should
the pump setting :
0.73 before TDC while i should have 0.80 for my naturally aspirated engine.
I'm a bit astonished that setting leads to a so bad running condition
Could it be the only problem ?
I will reset the pump to the specs and will try to start it again....