AScoff

Make & Model: Skoda Octavia Mk2 - VRS Colour: VRS Blue Mileage: <120k> Price: £1500 Description: Selling as Spares or Repairs due to reoccurriung missfire in C2, Buring plugs when 'coasting' - Runs fine above 3000rpm, but after a period of time (could be a few hours, or a week) will misfire In general the car is in otherwise good condition, usual age related marks - MOT runs out March If no interest, I'll be looking at the possibility of breaking the car, but would rather see it live on Condition: Used Service History/Receipts/Recent Service work: Had FSH - One is now due Extras: Full Tints, Graphite alloys Mods: Upgraded front disks and pads Shipping: N/A Collection: Collection only - Can be driven away - Bring spare spark plugs! - Located Sheffield Pictures:

I've compresion tested Cylinder 2 vs 1 2 is 9.5bar 1 is 8 bar this seems to me to be quite a difference! But, not what I was expecting? If I've got worn/failed cylinder rings, I'd expect a lower compression in the faulting cylinder?

Thanks - its the 2.0 Tsi CCZA Engine But, I agree, it does look like the last plug - Mechanical damage! 😞

I'm hoping this is the issue, and not rings... 😏

Not 100% sure no! - I'll give it a wipe So, if its oil but the balance of pressure is the same across all cylinders - what is my starting point? If its oil, why has the plug been seemingly burnt away? I'm trying to make sense of something my garage has failed to do in months.. without just changing stuff for the sake of it, like they have done before!

I’ve had this issue for a while now the car has been back and forth to the garage, who I’m now sacking off started with a valve/intake clean to resolve a carbon build issue the car ran for a week, really well, then threw an injector! 4 new injectors, a set of plugs later this then started the back and forth! seems the inlet manifold gasket wasnt changed and it looks like there was an air leak causing overfilling (I’m guessing) which caused the plug to foul, then burn the plug when removed, smelt of petrol! pressures across all 4 cylinders were spot on and in balance if i put a new plug in, it will run fine but when I’m coasting, or at a slow, steady speed, it will happen again! I’m on injector set 2 swirl flap mech was changed this last time, new injectors, manifold gasket, and plugs! im going to try and sort this myself this time as I’m not letting the original garage anywhere near, and I’ve not got the cash to start again with a new garage! was going to strip the inlet manifold and work from there any pointers / suggestions most welcome!! pics / bad plug and normal for comparison!

I looked at it, but got my garage involved They did a full strip and walnut blast clean... was just shy of £500! then same again for Injectors!!!

Hi mate Oh no!! lol Turns out I needed a full intake clean, that sorted it.. then an injector went.. so intake off again... then a swirl flap issue.. which is ongoing!!!! Main problem was intake carboned up... been running on E5 too... so if youre on E10.. worth a look - and dont bother with those companies who will come out and do a carbon clean.. utter rubbish... Good luck

The manifold was replaced before I got the car 2 1/2 years ago It was a VW genuine one from the receipt I have I have had it off and cleaned recently, then off again following a injector failing 2 weeks later! I would have noticed this wasnt connected to anything before this work was done! so not sure whats gone on! Thanks Guys My garage were looking into this for me as the assumprion was they had 'lost' a pipe!! Appreciate the help

Interestingly, I've found this on ebay - listed as a for a Skoda Superb - this is exactly what I have.. so perhaps... its the wroing part for my car!!

Thanks, I'll have a look and post some numbers later 🙌

Thanks the vac pipe coming off the engine, is fixed to the back of the solenoid there are 3 ports it seems the one missing is the one that’s fixed on the rear not the front bit then there is a ‘spare’ with nothing obvious missing! 🤷🏻‍♂️

Sorry, no the small bit from the swirl flap solenoid…

Sorry 2.0 Tsi CCZA

I’m missing a pipe after some work! It’s getting sorted… can someone drop a pic over showing what connects where please? I’ve got an ‘in’ pipe at the back, then and ‘out’ pipe coming off the back also… leaving this one at the front!