car turns over great but wount fire up

[will 2]

hi all, just restarted work on my williams after quite a few years, problem i have is the engine will turn over fine but wount fire up, could this be an imobiliser problem as i could not see any of the lights flashing in fact dont think i seen any on, central locking was clicking when pressing the fob buttons , thanks

[16v_paddy]

Also a classic symptom of the crank sensor being knackered so I'd suggest getting a new one of those 1st