C6 S6 - a love(hate) story. (long...)

A6 All/ S6 All
#33

Technically, this is what hey said:

“You don’t need high pressure to test GDI injectors, if you have high pressure you miss the problems you can gave with GDI. Its more important that you have a machine to drive them correctly which they have. Be careful as many injectors are damaged removing them. Look at our video You don’t need high pressure to test GDI injectors, if you have high pressure you miss the problems you can gave with GDI. Its more important that you have a machine to drive them correctly which they have…”

#34

The injectors are out for cleaning. All ten came out fine so I’ve got my fingers crossed.

But we noticed that the injector wells on bank 2 had signs of oil. The injectors will get new deals as part of the cleaning, but does anyone have an idea why?

http://imgur.com/RFbfu3t.jpg

#35

Basically its a crock of BS because they cant flow test them at a high enough pressure rate. Ask any diesel injector cleaning or service shop and they will tell you that you test the injectors at the pressure they run at and you test them at all kinds of different duty cycles not just wot.

Still if they do any kind of testing and cleaning it will be better than nothing. You can find out a good amount of information at 5bar still and that should be where they test them

#36

If you have any oil leaking from the valve cover gasket it will make its way down there. That isnt anything to worry too much about. Just take time to look and see where the oil would have come from. When the oil gets hot it thins out and if its standing anywhere it usually will find its way in spots. That is one of them

#37

https://www.youtube.com/watch?v=l9jX1KAKp78

your soundtrack. Yours will be a better story hopefully. It ended badly for him and his love…they both die young

#38

Let’s just say it was from last fall when we reseated the valve cover. It’s been clean since then.

#39

http://uploads.tapatalk-cdn.com/20160928/cef979c4a30588424ce9ed76c0a07eb7.jpg

It’s gonna finally happen! I got my fuel injectors cleaned on an ASNU machine in Greece. 3 came back iffy: 1 was just bad, 2nd with slightly lower flow rate, and 3rd had “burned pins” on the electrical connector.

I was going to order 3 new ones from JHM but they didn’t have them immediately on hand so I did the Google search and found 4x Hitachis for $55 each(!) I was a little wary but I called the store and they said they started buying directly from the mfg.

I just got them in the mail today and they look like the right ones (blue o rings in photo). I’m going to drop them off at the garage and hope for the best.

If it works out, I will definitely share the shop with you guys. My support for JHM is great, but not so great to cover an extra $70 per injector.

BTW. Since I’m putting 4 new/not OEM injectors in and do not have time to flow test them, is there a cyl preference I should keep? Just in case they flow at a slightly different rate…

#40

Not to be a nag or anything but you might want to check and get the injector checked before you put the new injectors back in.

The same story has happened several times in the past with these FSI injectors. Guys find a GREAT DEAL on injectors and it turns out it was a great deal because they were china knock offs that were in the same configuration as the OEM ones. So far each time that has ended in disaster. Each time it was the same story they have a direct line to some dealer of sorts.

Im sure there are going to be deals here and there but so far everytime someone got a GREAT DEAL. It was more of a great deal of trouble than a great deal. So just be careful usually if its too good to be true its not true.

#41

Not a nag, I share those same concerns. But having lived in China for many years, I think I can spot a cheap Chinese knock from a mile away. I’m hopeful, mostly because the packaging looks legit and the Chinese knockoffs are horrible with packaging. They just don’t care.

But I do have my fingers crossed and will report back when I can…

#42

Good attitude. I sometimes hate saying things to people as most people want to always believe that they found gold when its not. You have a good outlook and as you mentioned probably have a good idea on what to keep an eye out for.

Just to let you know its not just me. This is what komseh said about the cheaper injectors. As like I mentioned some people got the same cheaper injectors and had some serious issues. When you get the car back you should be able to log the car and see if there are any issues.

#43

Now that I think about it. If you had 3 bad injectors even 3 not top flowing injectors are going to be better. so it will be interesting to hear how it runs now that it has 10 fully woroking injectors.

#44

Finally. Out of action for a few months because of summer, but I got the car back after cleaning injectors and replacing 4 new ones. Also had to replace 1 coil pack that was installed about 5 months ago.

I only did a short drive last night, but the car starts and drives smoothly with no detected misfires. It also sounds a bit louder now–but I think that’s because I’ve been driving tiny rental cars lately.

It’s still too early to say about the Hitachi injectors, but they seem to be working fine for now. At <$60 each, this could be the place to go: https://www.wpdusa.com/products/26574/225702-Fuel-Injector-Hitachi-840151080397-FIJ0033.aspx.

Someone buy one and get them flow-tested against a ASNU-cleaned OEM injector. I have a spare one to contribute to the cause…

#45

its good to hear the car is back up and running.

The car is going to have a different sound as the one injector was bad as you said. That will rob the motor of a lot of power. Did you get any real reasults from the testing and can you post them

#46

No fancy write up with results. Apparently that is a separate software package and these guys do mainly turbo diesels. I just got some photos. Here is a sample with the bad injectors after cleaning.

http://uploads.tapatalk-cdn.com/20161005/72152d6f459b588aa97946cbed3e0a0d.jpg

#47

WOW thats a big difference and you said thats after cleaning. I would wonder what it looked like after cleaning.

Those are all over the place. None of them look really consistent. This is the number one reason why I keep telling people to get the injectors cleaned and tested. Getting new injectors is a nice idea but over all you still want to have them tested. Moxofia your situation is a little different you were running out of time and didnt know you had a few bad injectors.

That picture says a 1000 words and its important that people see this. That one cylinder looks to be 50% down on the other injectors. What that means is that cylinder is going to be running super lean and the end result usually is a bad cylinder after a while.

#48

Yes. I ended up replacing 4 injectors - 2 were flowing too low and 1 had a burned pin. Now I’ve got no more misfires, and the car generally runs well.

But I’ve got this crankcase vacuum problem and also this code:

P0024 - Camshaft Position Actuator B Bank 2, Timing Over-Advanced

That solenoid has its wiring harness resoldered. There may be a bad connection or the solenoid itself is bad. Don’t know yet.

#49

Try clearing the code if it comes right back then you might have an issue with the wire

#50

With a new cam solenoid and the repair of a bad pin connection into ECU2, it seems like all my big problems are over. New plugs/packs/fuel filter, fuel injectors cleaned/replaced, fresh oil change and now everything is running smooth again.

I’m going to wait until I drive at least a full tank without a CEL before I call it done, but right now the dash is dark and it’s a think of beauty. I haven’t replaced the belly pan yet - and I think that makes the car sound even better.

#51

WOW great update. These cars are very solid once you get the maintenance all worked out. In your case you had just some odd bugs that probably popped up when you had the motor out. Those can be hard to track down but you kept with it. Great job now you should be clear sailing for many many miles now that you have done all the work

#52

If everything is still clear after 500 Km, I’m willing to call the misfire issue done. But I still have the following on deck:

  • install new AC compressor & related parts
  • new or JHM upgraded intake manifold (currently running without internal changeover flaps)
  • install driver-side valve gasket
  • check possible front diff oil leak

Other than that, I just need to do an annual service interval.

But the bigger problem is 2-fold: 1) my wife has lost faith in the car, and 2) we’re moving to Malaysia (RHD) in 7-8 months for a 3-year posting. So I have to decide if I am going to sell the car (here in BG or back the US) or send it back to CA for my brother to drive while I’m gone. I still have some time to see if the car can win back her doubters, but we’ll see…