1.8T missfiring??

Hey peeps!!

What it is my brothers A3 1.8T (my old one) has developed a misfire now and again, it doesnt happen all the time but it is very noticable when it does happen. Also the engine management light has come on, possibly connected with the missfire??

I know these engines suffer from coilpack issue's but was just wondering what else could it be??

If anyone has a Vag-com we could use to check it out? just incase its doing damage to the engine, and so on...

Cheers!!

Mines the same.

Started missfiring last night.

I've ordered a new Ignition Amp for mine, they are known to go on the AGU engines.

What engine is yours?

DYL4N wrote:

Mines the same.

Started missfiring last night.

I've ordered a new Ignition Amp for mine, they are known to go on the AGU engines.

What engine is yours?

they tend to go if you have changed the airbox for a cone filter (cause theres sum sort of am on the airbox that needs to be cooled by air flow, these are only on the agu codes for some reason lol

Yep.

Mine has been changed. Just hope this solves the problem!!!

if you find the amp, nd ure running an induction kit, then id strap it to the cone, or somewhere near a cold air feed, as they kill easilly with overheating lukily im still runing standard box nd piper x panel filter

It's an AUM engine code car so im not sure about the amp thing going wrong with aum's, just the coilpacks... but its hard to say unless i get a vagcom on her. mynadd de!!

ive had the same prob a couple of times !!! 1 was a spark plug breakin down, i put cheap crap in it and the secound time was a pencil coil !!! basicly the ht that goes on the spark plug, but like u say vag.com is the way !!

Heard from a reliable source that the coil pack seals trap air in the spark plug tube, as engine temp rises the air in the plug tube expands and pushes the coil pack away from plug causing missfire. The solution to this is to cut very small 'v' notches in the rubber coil pack seals allowing the trapped air to escape. This worked on a mates Octavia vrs. Maybe worth a try.

thats what has been done on mine on the loop best way to prevent it i have heard that the coil packs are famus for going in the 20v engines not sure how my bfv code engine will fair

Found out today from my brother that it was the coil packs on cilynders 1 & 2, pentraeth stock them dont they??

dumb question, if you just replace the old ones with the new, will i need anything to wipe the coeds or will the ecu do it itself after fitting the new ones???