sounds like it could be some sort of loose wire/connection to the coil packs.

Is there a single wire somewhere that feeds all four coil packs?

Trouble with an intermittent fault is that a garage could take days to find it, if at all...

Welcome to Briskoda, hope you get your problem solved mate.

Davy

I was hopeing someone on here has had and rectified a simular fault. i will check the connections to the coil packs its a good starting point. My thoughts are electrical rather than mechanical but as you stated jonnycatbiscuit its intermittent(not erratic as i put it) so will be a git to track the fault down trial and error. is not really a route i wanner go down but its the cheapest.

Hello and Welcome to Briskoda