right we have put a 2.0 zvh in a 3i and its running on 3 now 4 will not fire at all there is a spark but its verry week we have changed the plugs dizzy leads and coil and it still aint having it we have allso changed the rotor arm and the cap and its still the same iv changed the cold start allso and nothing has changed any ideas please

 

btt as it needs fixing or ill smash the thing to bits its done our heads in all day

 

Sure its a spark problem and not a sticky valve/follower or something?

 

Inlet Manifold/ Gasket

Dave

 

the spark looks shit on 4 but i cant get my head round why it would be like that on4 and not the others cos we have changed everything

 

btt