DIY - Fuel injector service.

[mjmallia]

Well took the day off to tackle the fuel injectors. They have been in the back of my mind for a while, as been seeing lots on how the filter baskets start failing and cause running issues.

Bought elring seals, stainless mesh baskets from AKS and I have the injector seal fitting tools already and went for it. I had carbon cleaned the inlet valves about 5 years 20k miles ago and was also curious to see how bad they had become, if at all.....they were really bad the first time I did them.





After striping it all down and removing the inlet manifold, I was surprised as to how much carbon had built up again....but not as much as when I first did it.








Injectors were dirty so soaked and cleaned with a tooth brush the heads





Removed the baskets which were also dirty and falling apart. Caught them just in time.











Cleaned the inlet valves to about a 90% clean state....after and before.






Flushed the injectors out using a can of carb cleaner connected to its pipe and then into a tyre valve. Used a 9v battery to cycle the injector on and off until a fine mist was produced.




New seals fitted to injectors and manifold





Put it all back together, primed a couple of times and she fired straight up..... thank the lord LOL

All good and no leaks, but will monitor how she drives and cold starts.

[GVK]

Great DIY   

[ZoliWorks]

Eyyy, we both went for elring it seems     Do update us on how it turned out in a few days and if anything changed cause now I'm curious too

[mjmallia]

Forgot to mention that I had to buy a new oil breather pipe 06F103235, as it disintegrated.  Happened to me 5 years ago also.......I guess the heat cycles make the plastic brittle.

Just a heads up

[mjmallia]

This thing:
https://www.akstuning.co.uk/shop/home/576-genuine-vag-tfsi-lower-pcv-vent-hose-20tfsi-ea113-06f103235.html

Luckily my local TPS had it in stock, £30 all in and the wife was home..........as my car was in bits LOL

[Yodi]

Nice to see such a new post, I have a few questions if that's cool as I may have to do mine, I got a remap today but it was running lean and the tuners has pin pointed an injector fault causing it to retard the timing a lot.

How hard is the job to do, how long did it take?  Also, I read you need special tools to install the seals and an injector puller?

Thanks

Well took the day off to tackle the fuel injectors. They have been in the back of my mind for a while, as been seeing lots on how the filter baskets start failing and cause running issues.

Bought elring seals, stainless mesh baskets from AKS and I have the injector seal fitting tools already and went for it. I had carbon cleaned the inlet valves about 5 years 20k miles ago and was also curious to see how bad they had become, if at all.....they were really bad the first time I did them.





After striping it all down and removing the inlet manifold, I was surprised as to how much carbon had built up again....but not as much as when I first did it.








Injectors were dirty so soaked and cleaned with a tooth brush the heads





Removed the baskets which were also dirty and falling apart. Caught them just in time.











Cleaned the inlet valves to about a 90% clean state....after and before.






Flushed the injectors out using a can of carb cleaner connected to its pipe and then into a tyre valve. Used a 9v battery to cycle the injector on and off until a fine mist was produced.




New seals fitted to injectors and manifold





Put it all back together, primed a couple of times and she fired straight up..... thank the lord LOL

All good and no leaks, but will monitor how she drives and cold starts.

[mjmallia]

The special tool kit (made by Laser in my case) for the injector seals and removing the injectors make it very easy, but people have improvised tools out of pen lids etc..........your choice, but I invested in the tools 5 years ago when I decided to do it the first time, as I did not want to mess the seals on the injector tips.  They need to be stretched, fitted and then compressed in stages for a perfect fit.

It took about 5 to 6 hours to take it all apart, clean injector heads, remove and fit upgraded baskets, flush injectors, fit new seals, and then refit everything so the car is back to normal........not rushing and taking pics etc.

This is the kit I have for the injectors:
https://www.lasertools.co.uk/Product/5069/Injector-Removal-Kit-for-VAG

and also bought a basket removal tool like this one
https://www.efihardware.com/products/2698/Fuel-Injector-Filter-Basket-Removal-Tool

and four of these upgraded injector baskets
https://www.akstuning.co.uk/shop/home/2669-aks-ea113-tfsi-fuel-injector-steel-filter-basket-k034basket.html

[mjmallia]

Small update..........not a hugh difference for me as the car was running really well before, but it is slightly smoother and more punchy in power delivery now. 

Cold starts are a little bit better than what I had before (they improved loads with a new LPFP), but I have done a lot to this engine prior and think it is the healthiest it has ever been since 2017 when coming into my ownership

[ZoliWorks]

Good stuff. I'm getting mine done monday and remapped on the same day. hopefully my cold start issues will go away as well.

[Mekaniko]

Thank you for sharing, I have it also on my mind but as the car runs fine I don't know if it makes scene.

Regarding the cold starts, what's the problem? Long cold stars on cold? I read a lot about it and never find a solution...

[mjmallia]

Mine was running fine but as you can see, it was only time due to them starting to fall apart but not effecting anything just yet.

They become very brittle..........plus it was worth doing the carbon clean