How are the seals on the injectors? If those teflon seals are bad, would get a vacuum leak and possible misfires.
Also you said you have the manifold off and cleaned, but did you clean the actual cylinder head intake tract as well? May be a dumb question. ???
I’m waiting to get the injectors cleaned on an ANSU machine I found in Greece. But for the moment, I’m stymied by a hood latch that stopped working - the cable popped out of the latch. Hopefully i will get it open tomorrow.
Then the (new) mechanic wants to do a compression check and inspect the Camshaft solenoids before moving onto removing the injectors.
But yes, when we did the carbon clean I also cleaned the intake valves.
Stay tuned…
Doing the compression test is always a good idea. The carbon clean is helpful and the injector cleaning is probably going to get the best results. As for the load differences I wouldnt worry about that. The load will range all over the place depending on a long list of things. unless its really low vac range.
The injector seals would be a good thing to look at if the car wasnt FSI. FSI cars have the injectors in the cylinder heads and if there was a leak the exhaust would come out the injector leak. You would know right away if that was the case.
I’m all set to remove the injectors and send them out to be cleaned—but my hood latch is broken. The cable detached from the latch and I haven’t been able to push it back in from below. Arrrrrgggggh!
Everyone I know that had the same issue had good luck getting it from under the car with a long thin pole with a 90deg part oon the end
I tried that but was u successful myself. However, I brought it to another guy who em had done t before and he was able to put it back in place after 2 hours of effort. Now onto the injector removal…
Speaking of injectors, I recall more than a few threads that mentioned injectors disintegrating upon removal.
Is there a special tool or trick to removing 9yr old injectors successfully for cleaning? Am I right to prefer ANSU cleaning to a wholesale replacement?
Just make sure to lube the surounding area of the injector and take your time on the removal slowly work the penitration lube into and around the injectors
Getting the injectors flowed and tested is a great idea. Most shops use low pressure you want them to test the injectors at as high a pressure as possible. Over all yes getting your injectors tested and cleaned is the cheaper and thought by most a better idea.
Its just though to know how each shop tests and cleans the injectors. That would be the only thing that would possibly be an issue
It was all I could do to locate a shop with an ANSU system for testing and cleaning injectors. See: https://youtu.be/_yqcY0Gorho
ANSU said they test the injectors at a lower pressure, but implied that flow rate and patterns scale linearly as the pressure increases.
Fingers crossed that this will fix my cyl 4,9 misfires.
I’m finally getting my injectors off – going to have them sent out to be cleaned.
But as a side note, this is how much carbon I found just 10K km after a cleaning…
Sadly no thats not how it works for FSI injectors and most shops are not set up to properly test FSI injectors thats why they say flow rate patterns scale. There is a ton of ways your suposed to test injectors not just WOT. still if they have an ANSU cleaner and they test them at least to 5bar that is close to what your car has at idle.
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…”
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?
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
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
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
Let’s just say it was from last fall when we reseated the valve cover. It’s been clean since then.
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…
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.