Diamond cut wheels look much better than just black.

Go back to stock on the wheels..... They look dreadful all black

Put the wheels back to stock, I'd definitely agree. That cylinder doesn't look right compared to the others, so I'd have to go rings, especially if the head tests OK. Either way, it's a great buy, and im sure you'll have it sorted in the next video or two...

I saw it on the video. Cylinder 2 had siezed piston on TDC. There were scuff marks on the opposite side of where the burn marks were. Additionaly it had vertical scuffmarks to the left. Replace the piston rings. The piston may leak on the scuff marks. Check the cylinder wall for deformation.

My guess is a broken ring land. Pretty common ea888 issue. Looks like that piston may have been rocking a bit in the bore and glazed it slightly as well.

Put the camshafts back in the cilinder head, and turn them to see if the valve are closing properly. Pay attention on camshafts, if lobes are press fitted,the lobes might be in the wrong position(usually happens after a timing issue ;valves,pistons and camshafts interfere) Camshaft lobes must be 90 degrees delayed,clockwise, in firing order 1-3-4-2,cilinder 1 is the one next to timing chain. Example:cilinder 1 first lobe of intake camshaft must be 90 degrees delayed compared to cilinder 3 first lobes of intake camshaft . Another thing that you can do is to turn the engine until all pistons are in the centre, and put same amount of petrol in each of them,and watch how fast goes in cilinder 2 compared to the other ones.

I watch most if not all your work and appreciate just how much work that goes into repairs and maintenance. Keep up the good work.

I had a very similar issue with the CESA AE888 last year. Turned out the oil control ring had blocked up causing the piston the lower end of the piston to blow out, couldnt see any damage from the top. Nice easy job to do once the engines out. I replaced all 4 pistons for ones our of gen 3 AE888 as they have wider openings on the oil control rings to prevent it in the future

For many car nuts you are living the dream life, hardship yes but man you are busy with fine cars! I respect your ongoing endeavor and perseverance to keep on going with so many hurdles! My guess, given the black rims, somebody drove this car fast for too long - probably oil starvation at the piston breaking the compression ring...

Keep going. This was never going to be as easy as a coil pack or spark plug. The binnacle showed service due, and yet it was obvious that hands had been on the plastics recently. This will be a good car for someone after your work!

It's definitely worth popping the piston out and have a look. Plus a Quick hone. Great video 👍🏻

Great vlog and great car as always Dean, it still amazes me how you remember to put it all back together like new…hats off to you Sir….if you service it will you be renewing the transmission oil/fluid as I think this would be interesting to watch and learn……kind regards to you Mark from Billericay 👍😀🇬🇧🇬🇧

Having got into the engine that far i think i would check number two piston! Definitely a bit of silver on the wheels. Looking forward to the next video

A draw down test may have been the way to go to see where the leak is, i.e. inlet valves or exhaust valves , or passing the pistons in to the sump

I agree Dean, wheels will look much better stock. Nice spec car. Looks great.

' I hope this is a one video car' ... This is what is known in engineering terms as scope creep 😅👌 love the car and that interior. Well worth saving. Wheels back to stock ftw.

Leave some oil in the cylinder and see if it leaks out.

I've seen the exact thing on an Audi 1.6 57 reg had a slight misfire, using a borescope with side camera saw those exact "burn" marks near the top only on the misfire cylinder when it was stripped down, the compression rings were broken in 2 places

Fantastic looking car in great condition. Looking forward to your finding the root cause through your usual tenacious methods. Great video.

Nice one Dean, hope you get it resolved buddy! Really enjoy your honesty when you balls it up 👍🏼

I believe bent rods are common on these engines, causes the scuffing you are seeing, plus a loss of compression, definitely worth a closer look!

I suppose you could leak down test but you have the head if memory serves drop the sump remove pistons and do a light hone with new rings, you’re going to have head checked I presume,don’t just love cars!, good work 👍

You are such a good mechanic, and brave taking some cars on. Great video as always, look forward to the next one and hope luck goes with you. 👍👍👍👍

I had the same problem on my TTs project (see my TTs playlist). It turned out to be the rings. One of the compression rings had four breaks in them which were enough to cause zero compression. I saw in your video that you had a slight score mark in cylinder two, the same as what I had. When I removed the piston, the ring had broken into pieces but stayed intact.

Be a ring land for sure, Mahle pistons of that year apparently had a manufacture problem and were particularly susceptible to pre detonation or knocking due to insufficient octane fuel being used

Carrying out a cylinder leakage test would have been my next diagnostic process. A clear way to identify whether head or piston rings are at fault.

Agree resetting the wheels back to OEM diamond cut finish

As always Dean, you're already there! Slap a set of rings in it mate. No room for error. Doing head gasket and chain kit. Don't want to do that turbo too many times in you're life!! 💯

With all that compression passing the piston rings, when running.. i'd think it would have blown the dipstick out and tried to blow the sump oil everywhere .. looks more like a blown cylinder head gasket... Keep up the good work Budd.. Stay Safe Oot There ..

I can't say enough how much I enjoy ya videos , you are very knowledgeable and good at what you do so thank you for the entertainment. Wheels need to go back to factory spec definitely.

Mk2 rear headlights have a notorius factory issue with the ground wire. Where the ground wire meets the jack, it would melt the jack. Make sure to pull bouth rear headlights out (2min job) and check the jack. If there is any indication of overheating on the pin for the ground then just drill into the plastic of the back of the headlight to find the "metal rods" that carry the ground, put a screw with washers and create a bypass from that bolt directly to the ground wire (bypassing the jack completely). It takes 15 minutes, I did it myself and it worked for years, still probably does but I sold the car 6months ago. But defientely check if this process has started in your car and let me know if you need more specific instructions on the solution.

Great video dean, i would remove the sump and take number 2 piston out and check the rings and the condition of the piston for piece of mind

Thank you for sharing your mechanical knowledge with us !

Did a full set of valves in a 1.8t a4. Very similar engine by the looks of it but much nicer to work on because it's transverse mounted

Love these videos, just down to earth with no rubbish , thanks matey keep em up

Put the plugs back in and pour some petrol/wd40 in the top chamber area wee if it loses any fluid. Also on another note is cylinder 2 a possible weak spot as cars for Paul done a tt and I am sure it was no2 that had failed but his had scoring. Guess you could set the engine to mid way and pour fluid in the cylinders and see how quick it leaks back to the sump as you will be changing the oil anyway.

Defo factory on the wheels whoops sorry rotors 😂 Sadly I’m going for rings ! Keep them coming Dean , you’ll sort it……

Hi Dean best KZfaq channel on cars keep it up. I am too an OEM person so go stock 👍👍👍👍👍and well done for all of your videos.!!!!!

Looks like a nice car Dean and don't say you are going to have a pretty easy fix are you 😂, diamond cut alloy wheels definitely, don't like complete black wheels on anything, myself, love it when you and other mechanics say simply remove this or that, I honestly struggle with anything on car's 😂😂

Dean, I think it's time to invest in a 2nd 2-post lift, may take a bit of juggling to get it in the workshop. Could always put Trev (TVR) in a container to give you room. Great content as usual, wheel defo need to go back to stock, diamond cut will just make it pop even more, plus people who would be attracted to buying such a car would prefer the stock look I think.

Hi dean think it’s the piston rings I did an Audi 100 in 1980 it was a 1975/76 car and it had marking like that on only one cylinder it turned out to be the rings only good thing about the car I did was I did not have half the crap to take off and I had a lot more room in the engine bay keep up the great work you have my luck as I always say if it was not for bad luck I would not have any.

Definetly put the wheels back to stock. They look best that way.. Also you already should change compression ring. You already in there. Don't want to put it all together and find out you need to re do all the work for the compression ring.

The cylinderhead may be warped. It would still be nice to do a leaktest on the cylinderhead. Just put back the spark plugs and fill the chambers with petrol. Check after one hour if the petrol level dropped.

Great video nice motor as for the wheels put bk to stock look much better keep the good work up 👍👍

Love that interior really has a sports look to it. Regards the wheels def back to factory

I'm not really a car person but I love your vids, I'm the type of person who buys a Rolex online and when it comes it's either a Timex or Durex, I think you're carrying the same luck as me. Love the frustration in your voice.

@16:45 there appears to be aluminium deposits on the bore which is indicative of a piston seizure. I've raced two stroke karts for several decades and we get these all the time. The ring will be stuck into the piston land and you'll have no compression. You'll need to strip the bottom end of the motor, take the crank out and confirm with that piston. I'd then bore all the cylinders and replace all the pistons and rings.

Sickner absolute shocker for ya. But as always you’ll smash it and it’s gonna be a belter for someone after all the hard work.

Brilliant video , and definitely get shot of the black on the wheels

I’ve had problems with injectors sticking open and bore washing. Doesn’t look like you can see much cross hatching looks a bit shiny on the video. Also silly as it sounds Check the cam shaft I’ve also had a lobe turn keeping the valve open . Keep up the good work 👍🏻

Yep definitely go the diamond cut wheels, but really nice car looking forward to seeing the engine fix on this one

Serious graft there. I'd have a look at ring gap/bore more closely due to that smear creeping down the bore and not being 'wiped'. A total ball ache but you'll get to the root of it! 🚲

I would back to Oem/factory alloy wheels. Helps with resale value too👌🏻.

Definitely back to factory spec on the wheels, great looking car. 👍

Stock diamond cut wheels defo. I think it the piston rings Den on cylinder 2 as it doesn’t look like the head gasket has gone. Look forward to finding out what it is. See you in your next video

Bore looks very shiny, pour some thin oil in the bore to see if it leaks through. Check the cam lobes and valves, is it possible that something has moved and inlet and exhaust are open at the same time?

Dean , +1 for ringland , just had one the same (golf gti) . Like you , swapped coil packs , compression tested and scoped the bore . Replaced engine with a “good one” from ENGINES OD which turned out to be worse than the one I was replacing . They wouldn’t refund . If you or anyone needs an engine , please don’t use ENGINES OD

A possibility ? I did one of these recently with the exact same problem , when thrashed to the point of valve bounce the rockers can jump out. this can easily be missed as its quite easy to think the rocker fell as the cam was lifted

I think issue with top rings. Wheels go back to stock. They would really stand out and make the car look more modern and with all the other special specs on it.👍👍👍

diamond cut definitely 👌 and piston rings sounds right with the marking if not no clues

If you got it for half resale price could be a good car to push out with the honest diagnosis for someone wanting a 'engine upgrade' project. As for wheels definitely diamond cut looks better

Nice car, I agree about changing the wheel colour back to Silver.

That must be rings, from what I can see the H.gasket has a good seal all around, and you have some scoring in the bore, best check is to put and equal amount of fluid in each cylinder [diesel petrol mix] leave it for 3 to 4 hours and see which one drops first. Anyway best to have the piston out just check ✔️

That No2 bore looks very glazed to me, hone marks visible on all except No2. Been useful if you had carried out a cylinder leakage test before removing head. I’m guessing ring problem.

I'd also go back to factory colours on the wheels. Shame that the quick TT job has turned out anything but, however great for content for us👌

I was watching Elvis (wheeler) He had same sort issue with focus rs one cylinder down on pressure, He put that cylinder TDC power stroke and pumped compressed air in s/plug hole and listened where air was escaping in this case it was leaking to crancase and was piston ring/bore problem.., Engine out rebore! Maybe you can fill combustion chamber and cylinder with fuel to see if either drain away? Cool car thou.

Great video Dean - no.2 looks like broken ring / s a quick fix would of been great but it makes a good video for us- wheels back to stock pls

I love the fact you have multiple projects,makes it interesting in my opinion 👍

Great video mate keep up the good work

Love a tt got a MK3 ,do miss my mk 2 tho especially dsg gearbox, great choice of project again 👍👍

Your level of knowledge is crazy man, to think I was excited when I changed my wing mirror by myself lol

It’s tragic when you expect the issue, then lift the head and it all seems fine. I’d take visual damage over hidden damage any day of the week! Great vid 👍👌

Or oil vapours from crankcase are escaping from crankcase past the rings. If the PCV has fatigued (which is highly likely) then that may cause higher then normal crankcase pressures which combined with possible faulty rings can produce those residual tracing on the cylinder wall. Remember the Audi 2.0T from 2007 to 2015 was notorious for this. It's the Audi engine that carbons up the fastest out of all their engines next to the S8 V10.

Aren't the rings known for going bad? I'm saying rings. You can get upgraded ones i believe and I'd do all 4.

A great rapid work through, enjoyable to watch. Would love to know the back story, could be traded in as running, trader just needs to move it on. Hopefully a good profit in it for your effort.👍

I wouldn't take the risk of putting it all back and end up rings, just drop the sump remove # 2 big end and push the piston out, worth a look.

the ring land will be broken on the piston, common on these. you can just put one piston in but i'd advise checking them all

I like how fast you can troubleshoot these issues now.

The wheels are personal taste me thinks it looks better black. Haven't a scooby with what's up with the Th'engine I can just about change a wheel or swap a battery but that's about as far as I'd like to go as cars are to complicated these days I'd have a stable if it were a capri or a car from the 70's. Lol Keep up the good work mate can't wait to see the RS finished.

It seems some kind os piston slap, check the pistons wrists, it might have oil starvation issues, on engines like these it's good to do a good flush clear all the oil galleries etc.

Full cylinders with diesel, if cylinder 2 drops down rings or ring lands. I had an st3 that I couldn’t see an issue with, bored still looked mint. Filled the bores with kerosene and the one with an issue dropped down. Pulled piston out and half the ring lands were gone

Looking at that close-up of the wheel you had. It kinda looks like there's been some JB-weld patching done on one of the spokes... which would explain why they couldn't keep the milled finish. Looking at the bores, I see a couple of vertical score marks which makes me think you've cracked a ring or ringland.

I would add some petrol into each bore and see what happens to piston 2 compared to the others. Also, check the lobes on the cam shaft in case no 2 has spun. If I were to have a bet, I would say rings. Nice car though!

I would defo go diamond on the wheels, and eliminate piston 2 compression rings, great video👍

Great content again Dean I like the phrase “what should have been a 3 hour job took all day” I’m glad the experts have this too 🤙🤙

Hi Dean. Its Liam from Ireland again lol. I would go back too stock with the Wheels. Thats if you can get the old paint off them 😊. That White BMW is very Nice and this Audi is so Cool. I hope you dont have too take the engine out of it. Well done for getting the Head off lol 😊. Great video as usual Dean. Chat later bro.

Glad you chose to fix the Seat 😊

That same thing happened to me 2 months ago, longitudinal 2.0 tfsi, sudden loss of compression, same errors, no hissing sound or anything, but turned out piston heat belt (between 1 and 2 rings) gave up, so rings no longer stayed in place, losing all of the compression.

That is a stunning pretty car! Love love love the new TT...

The #2 bore looks to have less honing crosshatching and a lot more shiny than the other 3. Did you take the oil filler cap off with the engine running to see if the valve stems seals were good and not pressurising under the rocker cover?

Looking at cylinder 2 compared to the rest it appears as if the ring line is about double the distance from the top of the block. Could just be because the comp ring is toast and its stuck in the ring land or the rod is bent slightly and the piston isnt reaching all the way up. If the comp ring was completely toast it wouldnt have even made the 1 bar of pressure surely?

I feel your pain😢 just had to do the same job on my brothers scricco. We ended up just takeing the engine out.....my money is on piston ring.

Put fuel in head see if valves are leaking, same for piston, number 2 bore looks polished unless it’s the light, might indicate leaking injector? My guess is gonna need at least a set of rings, maybe piston too, worst case, rebore/rebuild

OEM wheels for sure, I'd say new rings seen this on them engines a few times now 👍🏻

I would say piston rings,while head is off may aswell whip the piston out to check it,also wheels defo back to stock!

Go fot oem look on the wheels. Love some TT content, such an underrated car❤

I’m wondering if you have a stuck valve / binding valve stem might be the cause.

Cylinder 2 piston looks like it could be rocking at the top of it's stroke. As it leans towards you, water is getting past the head gasket and into the cylinder (brown mark = rust?) and the mark on the cylinder wall nearest to you looks like a score mark made by the piston scraping it?

Start using a leak down gage instead of a compression tester. Leak down will point to the major source of your problem.

Head gasket (guessing before you plug it in). Can we get a breakdown of your costs in the next video, once its fixed? Thank you, great video, I've been wanting to buy a TT from Copart so very interested to follow this.