I’ve read a couple posts regarding what PIA it is to remove these injectors, I’ve got to get mine out, 125K on the clock, so I’m sure they will be stubborn.
Does the tool help/work?
I saw Count Vaugn’s advise, regarding penetrating lube, vibration and taking your time prying them out.
Any other suggestions, hints, tricks?
Thanks!
Counts advise is something to follow that’s for sure. I have been doing that for a while now and not had any issues. Just take your time. wiggle and rotate.
I bought the CTA Audi/VW injector puller and it definitely makes short work of it.
Just be mindful not to use the full swing of the slide hammer, quick short strokes worked best.
It’s a $100 tool (i got mine for $55 bucks with a coupon) and some places rent them. You can removed with out it, but I have a 07 A6 with the FSI 3.2 as well, and used it on there.
murphenur Can you drop that part number for the tool again. I think that would be helpful. Or a link to one.
toolkit T10133
Freedom racing has the aftermarket version. they have good prices on alot of specialty audi tools.
full video here. will have the injector removal video out shortly.
Very very useful to have the slide hammer. I had one injector that was crazy stuck, actually damaged it with the slide hammer had to swap in a spare on a different engine. Bent the upper steel lip back. Im sure if i spent more time lightly tapping it it would come.
The hammer comes in handy for pulling the cam carrier guide pins as well.
Yup.
It’s CTA Tools 8877 Fuel Injector Tool. Also comes with the teflon seal installer too.
Amazon for $108
https://www.amazon.com/CTA-Tools-8877-Injector-Puller/dp/B015NLBZ4U
On the 3.2FSI I was working on, one of the injectors was JB welded in. Took about 15mins of tapping but eventually came out. Broke 2 others being too aggressive. The point where this tool pulls on is just the composite part of the injector.
I have a feeling that the previous shop that replaced this injector were a bit to aggressive with the pushing and pulling of the old injector and messed up the bore. They sealed it using JB Weld around the shaft. Crazy stuff, but it seems to be holding for now, but I’ll replace the head when it’s not -36C.
With the injector removal toolkit it’s not too bad. Definitely worth buying the kit or renting one from Autozone or similar. I put a few pucs of the process in my thread: http://audirevolution.net/forum/index.php?topic=4628.75
JB welded in… WTF… but seriously thats a really great indication of how useful the tool is. Thats crazy.
Might as well share photos:
You can see it on the injector… down the narrow part of the tip.
https://i.imgur.com/f7QBGN6.jpg
Angle#2
https://i.imgur.com/VgNnbQh.jpg
Third angle
https://i.imgur.com/5oYH8YE.jpg
Not the best pic of the hole, but you can see some damages done by the prior shop removing the injector improperly.
https://i.imgur.com/cdSZP6A.jpg
Here’s the injector that I put in WITHOUT the JB Weld, as the combustion gasses would escape they melted the injector.
https://i.imgur.com/0ICWscu.jpg
Here’s what that sounded like:
Autozone here didn’t charge to use the CTA tool. I left a deposit and got it back when I returned it.
I think I would have had more injectors survive the removal process if I had used the other kind of tool that uses a screw to press them out instead of the slide hammer method…
Regardless, I know have 5 good used injectors to sale, incase you have the same 50% recovery ratio that I did…
Michael
Finally got around to pulling the intake manifold this weekend. Much to my surprise, look what I found in two of the intakes:
http://audirevolution.net/addons/albums/images/403191629.jpg
http://audirevolution.net/addons/albums/images/403191629.jpg
Ordered a new intake from JHM………………
Sprayed each injector with PB Blaster and let soak while I removed the fuel lines and electrical connectors. Dam, those electrical connectors are brittle after 125K, be very careful when releasing! When I removed the fuel rails one of the injectors came out with the rail! I picked up the Chinese $69 fuel injector removal tool on Amazon. Worked very well, the penetrating spray and the slide hammer allowed me to gently remove each remaining injector with no damage.
Talked to the owner of Injector Experts in OH. He flows the GDI injectors at 8 bar or approx. 120 psig, which he claims will provide adequate information regarding spray pattern. The real issue in my opiion is the ultrasonic cleaning and back flushing to remove build up and debris. The flow rates are just math and can be verified at any pressure. He charges $22 for GDI injector including new orings, seal and spacer.
Not sure what those clips and collars are called, should you replace them when re-installing??
It’s been about 10k since I did the carbon clean. The valve were spot less, and a new oil seperator was installed. Amazing how much build up after only 10K!
http://audirevolution.net/addons/albums/images/616348882.jpg
Hey you won the where is part of my intake manifold game…but its not really a good win huh…
Your 100% right on the cleaning and brushing. remember 5bar is idle on these cars almost 6 so 8 bar is like your cleaning your injectors at idle not a really big win. While the flow rates are math the issue is that there are load flow rates that you would never see at such low pressure. Injectors don’t usually fail or show issues at just idle the driving misfire from injectors is at 16bar high duty.
Keep us posted. If you can get before and after flow rates that’s always helpful to know.
The clips and the parts with it are part of the sealing of the injector.
You’ll get a new teflon seal for the end of the injector which is the most important seal (seals the combustion chamber)
the tool has some extra bits to help you replace them.
Rockauto carries the seal kit for $7
https://www.rockauto.com/en/moreinfo.php?pk=5414289&cc=3005841&jsn=350
I appreciate the feedback. They do a full report with the before and after detail, I’ll share when I get them back. In my conversations witha tech at JHM they believed I had one injector that was stuck open, causing the majority of my issues. Hopefully the clean and flow will provide a set of good working injectors.
We will see!
Will be fun to have the car running properly with the JHM Tune, pulley, and SAI delete. Now to address the exhaust…
1 injector running open is just as bad as one injector not opening. These injectors on these cars are for some reason a really big PITA
These injectors are used in the newer 4.0TT. Have a friend’s 2013 S6 that audi quoted $13,000k to do the 8 injectors, due mostly to having to remove the engine. With the intake on the outside of the cylinder heads, I’m sure this is the only way.
Interestingly they have a revised part number ending in AC. Curious if they revised the S6 injectors too.
13k…WOW that’s a major killer right there. That’s close to 1/2 the price of the car itself.
worst still was the injectors were replaced by the dealer 2 years ago for $10k.
And I thought the V10 was a bit of a challenge to work on, its a pretty tight engine bay, but with a little ingenuity and a lot of help from this forum, a determined owner mechanic can do quite a bit without dropping the engine!