Hi

We have a 207 1.6hdi 16v with a misfire on idle, it improves as the revs go up but it is still there.

Quantity comparison shows cylinder 3 -4 on idle & cylinder 1 +2 cylinders 2 & 4 roughly 0.

We have had injectors checked all came back ok, checked compression all good, checked cam lobes for excessive wear all ok.

Check & cleaned EGR. Only fault codes were for glow plugs which we have fixed.

Any other ideas?

Many thanks