Intermittent misfire 1.4 TSI Octavia

electrofrog

Picked up a little run around used octavia with long nct 2008 running well but observered slightly rough idle when cold not bad enough to put a warning on the dash but noticeable. Connected obd cable identified intermittent misfire on cylinder 3.

Common problem with these apparently usually related to sparks/coils so swapped them out for new ones (bosch) and noticed an improvement straight away that was about 6 months ago now have noticed a slight judder again when engine is cold connected obd and seems to be back again but in cylinder 1 but not as often as before. I read R8 coils can help/mask the problem so picked up 4 then when they arrived I realised that to make them fit I need to rewire the harness and install an adaptor (they bigger). Like the one in the pic I am confident enough doing this but my questions are

do you think this is overkill should I live with the occasional misfire?

Will there by problems with NCT etc if I make this mod as I am aware the engine cover won't fit after I install this (if I proceed)

GavPJ

These engines are notorious for burning valves out.

Could be the start of one beginning to fail.

mk7r

https://www.boards.ie/discussion/comment/120216239#Comment_120216239

And timing chains

GavPJ

https://www.boards.ie/discussion/comment/120218154#Comment_120218154

I've seen so many of these engines absolutely goosed. No idea why anyone would buy a VAG.

electrofrog

I'm fully aware it could be the sign of a bigger issue but picked it up for walk around money car owes me nothing so yo speak if I get another year or 2 out of it I'll be happy enough before this I had a passat also picked up fairly cheap and it kept me on the road 5 years + and even when I scrapped it I drove it onto the recovery truck.

GavPJ

https://www.boards.ie/discussion/comment/120219886#Comment_120219886

Maybe worth firing a few bob at it so if it owes you little.