Chonpy_snake

If the lifters are really bad it will eventually chew up the cam and journals (bad as I believe the AUD is the same and incorporates the rocker cover as cam box). Lifters are about £50 a set new, I think I have 7 spare AUC ones you would be welcome to that are known good but require cleaning. That's if the lifters are the same on both engines. Pretty much would require some dirko sealer, lifters, timing belt, tensioners and water pump to sort it and well worth the job.

11 hours after starting the repair work and no workshop manual ..... It's done!!!! Unfortunately not really much in the lines of pictures but I did find out some interesting points and how awkward things can be if not done correctly. The 11 hours was spent outside on the driveway, cold, occasionally wet and now totally seized up because of arthritis 😆 First thing of note..... Check the brake servo hose from the manifold. Mine had a hole rubbed right through it and was causing a huge air leak (unknown to me) and registering a cylinder 3 misfire on my reworked cylinder head. Secondly .... VW engines have a huge appetite for burning valves, seats and guides. It's just a thing I guess. The fault on the original head seems to be a cylinder 1 exhaust valve that has an oval head and a groove burned into the valve seat. That explains the 78% leakdown we had into cylinder 2 through the exhaust then. I did find that my water pump was past its best a very long time ago. Had to buy a replacement halfway through the job because my spare engine was also on its original plastic impeller VW unit. There was no way in hell I was trusting that. The end result of today's work is a very quiet engine at idle, stable rpm of 870 and a bit of a fruity note over standard if driven harder than you maybe should. Was it worth the almost £470 to fix the AUC? In my opinion hell yes. My little Lupo should be good for another 70k before the engine explodes again now. Was it sensible ..... Probably not at around half the price of a PD conversion. Except for my total mass panic because of death rattle while the lifters bedded back in. I'm properly pleased with my day 👍🏻 Apologies for lack of photos I will see what my dad managed to take and wether they are worth uploading later.

This is my 1.0E Lupo....  I got this little car in October with the intention of using it as a stopgap car to see me through the winter. It certainly has got under my skin! Plagued with a constant idle speed misfire and wrongly diagnosed multiple times, I decided to do things properly and investigate fully as to the cause ..... This turned out to be an expensive journey that we are about at the end of. Firstly I decided to grab a spares car, simply for its engine and a couple of other bits as it also had an AUC 1.0mpi in it that seemingly ran flawlessly. I had no issues pulling it to pieces as it ended up being extremely bent, to the point that the entire front end moved when we removed the front crash bar. It didn't in the slightest bit drive in a straight line. And I thought, the engine was fine (the main thing I wanted it for). Progress was fast in removing important parts I wanted. But anyway back to the engine situation, I had issues with some of my engine removal tools being delivered and in the mean time I did much research into issues with burned valves and worn valve guides on these AUC engines. It was decided to take the head off as a precaution before fitting the engine ..... I'm glad we did! This engine ran fine, no notable misfire, no smoke, however there was an obviously dead lifter. As the head was removed it became immediately obvious that exhaust valves on cylinders 1, 2 and 3 were badly burned. The cam was also binding and scored on the journals. So, off to the engine shop it went! Report was 3 valves burned, all 4 exhaust valve guides worn way beyond tolerance, the cam had to have the bearing faces polished and the top was twisted..... Great! The good news is that £320 and almost 3 weeks later, it was ready to collect... There is a lovely job. All inlet valves cleaned, new exhaust valve guides x4, new exhaust valves x4, reworked camshaft and best of all 3 angle valve seat cuts across the board with new valve stem seals and a complete head set. I do however wish people would service engines properly. The next job on the list was to clean and re-oil the lifters as we knew one was dead, just not which one. If you don't change your oil often enough let these next pictures be a lesson as to why you should .... that was simply what was stuck inside the lifters. Carbon, grit and other dirt. This engine hadn't had frequent oil changes and this is the net result. After everything was cleaned off it was re-oiled and stored in oil for the next couple of days work ahead so nothing goes rusty and I don't need to worry about dry lifters.... and just for prosperity here is the dead lifter ....It will stay compressed....Or extended, but will not spring as it should. There is also no sign of a spring internally when pulled apart so that's possibly in the sump. There you have it, my VW Lupo that was purchased cheaply and intended to be thrown away. Getting a second shot at life because I have somehow become extremely attached to it. I will update on progress as I go.

Finally got a leakdown test done. We suspect that cylinder 1 exhaust valve is burned out as losing 78% of pressure ..... Only a VW would still run 😆 Repair is on the cards as soon as I can sort out required tools and costs involved 👍🏻

I certainly have yes. Dry test was 124psi, wet test was 177psi. Also to note that left on the tester, it lost no pressure. Misfire seems to be there at idle and up to 1100rpm and then it's brill

Recently got myself a 2004 Lupo 1.0mpi E. It has an engine issue that is driving me a bit nuts so as part of the process I have decided to join Club Lupo. I appear to have an intermittent misfire on cylinder 1. Believe this to be caused by the compression being 124psi on that cylinder instead of the 177psi on the other 3. Have a really good coil pack fitted and new leads to rule that out as cylinder 4 kept misfiring (now fixed that issue) but the low compression and misfire on cylinder 1 remains. The car doesn't smoke, doesn't consume any oil or coolant and otherwise drives well. How do I rule out the cylinder head gasket and am I missing something glaringly obvious? Apologies for the long winded introduction post 👍🏻