As per title, I've been getting a rough idle on start up & also it struggles to start from cold. It is always ok when warm & as soon as it warms up the idle is ok.

Also last week when I was camped up for 3 days, It struggled to start & I got a flashing CEL. The same happened again after another 3 days parked up at a camp. I checked the fault on my IID tool & it said misfire bank 2, I cleared the fault & its fine again.

Then on my 80 mile drive home through country roads I got a red flashing light on my Prins LPG system. I looked it up & it says "Non Critical issue with LPG system". It drove ok but its hard to tell with these RRs as they drive so nice, it did feel a little jerky in traffic though but it was so minor I wasn't sure if it was my imagination.

Clearly something is not quite right, I'm thinking maybe plugs? Coil pack? or maybe even the battery?

Its the M62 engine on LPG. 2004 RR 4.4 V8 Autobiography