Benjamin Posted June 22, 2014 Author Report Share Posted June 22, 2014 (edited) You're saying I should sell my gti? Do you know something that I don't about the car?Sorry for the third degree, but slightly worrying when someone you don't know recommends you get rid of your pride and joy a month after getting it. Edited June 22, 2014 by Benjamin 1 Quote Link to comment Share on other sites More sharing options...
HDH Posted June 22, 2014 Report Share Posted June 22, 2014 I think he means its gonna be expensive if the rings are gone . Quote Link to comment Share on other sites More sharing options...
Benjamin Posted June 22, 2014 Author Report Share Posted June 22, 2014 Thanks for the explanation mate, so I could compression test it right? Quote Link to comment Share on other sites More sharing options...
Rich Posted June 22, 2014 Report Share Posted June 22, 2014 I think he means its gonna be expensive if the rings are gone .Hi. Quote Link to comment Share on other sites More sharing options...
HDH Posted June 22, 2014 Report Share Posted June 22, 2014 Thanks for the explanation mate, so I could compression test it right?Would a surefire way of telling if the rings are shot. Quote Link to comment Share on other sites More sharing options...
danoid Posted June 23, 2014 Report Share Posted June 23, 2014 Well, since doing all the service, whats it like now, is it still doing it? Quote Link to comment Share on other sites More sharing options...
lupogtiboy Posted June 23, 2014 Report Share Posted June 23, 2014 Someone on here is breaking a gti, second hand engine maybe?Mine set me back around £1500 including parts and labour, tho that's parts at staff rate (I work as a vw/audi parts advisor) and mates rates at a vw specialist. I was going to drop a second hand gti lump in, but the seller just stopped replying to my texts on the day I'd arranged to collect it! Quote Link to comment Share on other sites More sharing options...
Benjamin Posted June 23, 2014 Author Report Share Posted June 23, 2014 I'm going to take it out for a drive tonight, I bought it as a second car, so have only done maybe 10 miles in it since the service. Will report back afterwards.Going to look at getting the problem sorted, rather than just flog it and let someone else have the problem. Wanted a Lupo gti for years, determined to look after this one properly! Quote Link to comment Share on other sites More sharing options...
lupogtiboy Posted June 23, 2014 Report Share Posted June 23, 2014 Since I've had mine done, she's been perfect, doesn't use any oil at all! Mine was my daily until recently, had the rings done at around 118k two years ago, now sitting on 158k. At its worst, I used 4 litres of oil in a week, but I was on holiday on the Isle or Wight at the time, tho my fuel economy was great, averaged around 45mpg!Its well worth getting done in my opinion. I tried everything before realising that it had to be the piston rings, something a tech here said all along! I even thought it was the valve stem oil seals, which did need doing anyway, helped for a week or so then the black spots reared their ugly head again.... 1 Quote Link to comment Share on other sites More sharing options...
Benjamin Posted June 23, 2014 Author Report Share Posted June 23, 2014 So this was after a 40 mile enthusiastic drive this evening, it's a marked improvement on how it would have been before I serviced it. Ran like a dream aswel! Going to get it compression tested and pop some injector cleaner in it aswel. Quote Link to comment Share on other sites More sharing options...
Rich Posted June 23, 2014 Report Share Posted June 23, 2014 Injector cleaner isn't going to help when it is burning oil, totally wrong department.An improvement isn't good enough.Start it up when cold and rev it quite high, see if it chucks any smoke out. Quote Link to comment Share on other sites More sharing options...
Benjamin Posted June 23, 2014 Author Report Share Posted June 23, 2014 (edited) Ok, will do. What am I looking out for?I thought the improvement might mean some crap working it's way out, I didn't think it would be perfect straight after the service? Edited June 23, 2014 by Benjamin Quote Link to comment Share on other sites More sharing options...
lupogtiboy Posted June 24, 2014 Report Share Posted June 24, 2014 Mine was chucking out blue smoke on hard revving, but not clouds of it. Its going to be the piston rings. It only looks better at the moment because, like me(!), I was hoping that a cheap fix would cure it. However, my cheap fix didn't help at all, but by the end of it all, I'd changed:Oil separator (£90!)Valve stem seals (£500!)Oil service (Almost free at work)Numerous engine flushes, not worth the bottle they are kept in in my opinion!Then, I was going to buy a second-hand engine, but the seller let me down. Time for a bank loan and some investigative work at a mates VW garage, which found that the oil ring on cylinder 3 was scraping the bore, letting oil into the combustion chamber. I had the bores re-honed (thankfully it didn't need re-boring!), all new piston rings on all cylinders, clutch, cambelt and water pump, oil service, and a new thermostat housing (mine was cracked), put back together again and she's better than new! I've not had to top her up between services since. I've got some pictures somewhere if it helps? Quote Link to comment Share on other sites More sharing options...
Benjamin Posted June 24, 2014 Author Report Share Posted June 24, 2014 Thanks for all the replies. Gave it a rev from cold this morning. A little of white smoke on the first revs, nothing after that.Going to try and find a specialist vw place near me and get them to take a look I think. Servicing I can do, don't want to start messing about with the engine myself. Quote Link to comment Share on other sites More sharing options...
lupogtiboy Posted June 24, 2014 Report Share Posted June 24, 2014 (edited) Just read that a cylinder drop test is as follows:Do a compression test, if a cylinder has significantly lower psi reading than the rest poor a teaspoon of oil down the cylinder and retest, if the psi reading jumps up then you know the rings are bad. Or you can do a leak down test.Mine was chucking out mostly blue smoke on over run, ie when you're going down hills, then put your foot back on the accelerator. Edited June 24, 2014 by lupogtiboy Quote Link to comment Share on other sites More sharing options...
Benjamin Posted June 28, 2014 Author Report Share Posted June 28, 2014 Just read that a cylinder drop test is as follows:Do a compression test, if a cylinder has significantly lower psi reading than the rest poor a teaspoon of oil down the cylinder and retest, if the psi reading jumps up then you know the rings are bad. Or you can do a leak down test.Mine was chucking out mostly blue smoke on over run, ie when you're going down hills, then put your foot back on the accelerator.Thanks for the info mate, unfortunately, I'm not the most mechanically minded. So I'm trying to find a VW specialist near me to investigate, and get it sorted that way.Still running great though for now Quote Link to comment Share on other sites More sharing options...
Benjamin Posted July 1, 2014 Author Report Share Posted July 1, 2014 (edited) So the plot thickens. Compression test came back fine. I don't really understand it if I'm honest, but the garage said it could be a faulty lambda sensor? He thinks it might be unburnt fuel? Does that sound correct? Friends going to code read it for me, see what it says. Edited July 1, 2014 by Benjamin Quote Link to comment Share on other sites More sharing options...
Rich Posted July 2, 2014 Report Share Posted July 2, 2014 I did a compression test on an AVY in a Polo the other day, cylinders 2,3,4 near anough 175, cylinder one was 200.I know why, anyone else care to guess ? 1 Quote Link to comment Share on other sites More sharing options...
Benjamin Posted July 3, 2014 Author Report Share Posted July 3, 2014 Please stop with the cryptic questions and put me out of my misery please Breather pipes? I am clutching at my very spare engine knowledge now 1 Quote Link to comment Share on other sites More sharing options...
Rich Posted July 3, 2014 Report Share Posted July 3, 2014 You're burning oil, a compression test won't work because the oil seeping past the rings ups the compression.A drop test is the way forwards. Quote Link to comment Share on other sites More sharing options...
Benjamin Posted July 3, 2014 Author Report Share Posted July 3, 2014 Okay, what will that be to look at? Quote Link to comment Share on other sites More sharing options...
Rich Posted July 3, 2014 Report Share Posted July 3, 2014 Right, we're going to get more complex because you love the technical stuff.It's time to get someone to do a leak test.Basically you pressurise the cylinder and then you see how long it takes for the initial compression to drop.This tests the full sealing of the cylinder and is definitive.What was the compression across the cylinders ? Quote Link to comment Share on other sites More sharing options...
Benjamin Posted July 4, 2014 Author Report Share Posted July 4, 2014 Sorry Rich, I just like to know what I'm paying out for.I'll get the results of the compression up later, haven't got them to hand. Thanks for all the info though, appreciate it. Quote Link to comment Share on other sites More sharing options...
Dblock Posted July 4, 2014 Report Share Posted July 4, 2014 You're burning oil, a compression test won't work because the oil seeping past the rings ups the compression.A drop test is the way forwards.That is interesting. So if you have a cylinder that is reading higher than normal or lower than notmal it's a sign of a problem. Quote Link to comment Share on other sites More sharing options...
Benjamin Posted August 5, 2014 Author Report Share Posted August 5, 2014 So, I'm still not sorted after a fair few labour hours paid for. Garage now suggesting it might be the cat failing? On the plus side, coilovers ordered this week, and then having some paintwork sorted as well. Full 'fast road' setup. Quote Link to comment Share on other sites More sharing options...
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