got an 1100 mpi in that will not start without petrol down intake. once given petrol will run as long as revs held on. release revs...cuts out then will no start unless given more petrol. faults come up for phonic wheel and iac. cannot do phonic relearn as wont tick over. has had a new cam sensor and timing checked spot on. if disconnect crank sensor wont start at all. if disconnect cam sensor it makes no difference...ie starts with petrol. ecu pins are in good clean condition and all earths have been cleaned. any ideas appreciated (i have fiat ecu scan soft and that also doesnt do phonic relearn. thanks steve