engine not firing on all cylinders

[chimejczuk]

i have a 2001 clio 1.6 16v dynamique
the engine is firing on 3 cylinders it did this as i was driving along at around 25
its been in the garage had all things checked mechanicly spark plugs injectors compression timing crank position sensor everything
any ideas why it still not firing on all 4 ??

 

[MicKPM]

Scope the injector and coil triggers then, if they're okay check the coil pack primary/secondary resistance and go from there.

Mick

 

[chimejczuk]

wont lie mate i dont know how to do any of that thanks anyway ill pass that info to my mechanic hes stumped unless its an ecu problem

 

[sophiesdad]

does he know which cylinder is not working ?

 

[chimejczuk]

it started off not firing on second then after we played with the injectors it moved to 3 after stripping it down to check timing it had moved to 4 where realy stumped on whats wrong with it the only thing we can think of is the ecu is playing up