Notice #1 injector leak so I replace all with Generic O-ring then #2 began to leak so this time I replace with OEm 12 bucks for 1 so it stop but after 4 days #4-5-6 leach on and off , could it be the fuel rail? The leak comes from the Upper O-ring replacement and the other genetic O-ring don***8217;t leak also began to give me high idle it happens after O-ring replacement

You can just replace them one at a time but you're asking for trouble if you do. They all age and harden at the same rate so once one starts to leak then you are going to get leakage from the others by virtue of the fact that you have to disturb them all to replace one. Best plan is to replace all 12 in one go.

 

Ok I see I only replace uppers o-rings thanks


Sent from my iPad using Tapatalk

 

NO. Replace them ALL. There are 12 of them in a 6 cylinder engine with 6 injectors. 6 o-rings between the injector and the fuel rail that stop the fuel leaking out and 6 o-rings between the injectors and the inleft manifold to stop unmetered air from entering the air intake and messing up your fuel trims. The upper 6 o-rings are different to the lower 6 as well so make sure you get the right ones.

 

The upper o-ring connects to the fuel rail. Don’t buy generic o-rings as they are not the proper quality. Go to FCPEuro to order them. Use a silicone spray on the o-rings when installing them and when installing the fuel rail.

 

Now I'm worried about the o-rings I got for my injectors from fcp euro. I didn't want to spend $2 each (or whatever) on OE from dealer.

Anyone with fcpeuro injector o-ring experience? (/threadjack)

 

Dealer $12 bucks each


Sent from my iPad using Tapatalk

 

I'm out of state for a few days, but 90% sure I replaced mine with FCPs. When I get back home I'll try and pull the receipt. They worked fine. I thought they were leaking, but turns out it was a hose.

Sent from my SAMSUNG-SM-N910A using Tapatalk

 

i purchased these and replaced all o rings.

UREMCO 16-6 Fuel Injector Seal Kit, 1 Pack https://www.amazon.com/dp/B01GWWJ5YQ/ref=cm_sw_r_cp_tai_2B6pCbRVZ2Z8C

car is still apart so i cant give a full review yet.


Sent from my iPad using E46Fanatics mobile app

 

Filters too? Cool.

 

Dealer $12 bucks each

FCP show genuine at $6 ea upper and lower so $12/injector. https://www.fcpeuro.com/BMW-parts/325xi/Fuel-Injection/?year=2003&m=20&e=177

 

Dealers charge a minimum of $6 per O-ring regardless of the application.

These are pretty common O-rings that you can also get from most local auto parts stores as well.

Or consider something like this if the application is correct - https://www.amazon.com/UREMCO-4-6-F...8226&vehicle=2005-31-180-20--7-6-7-7345-171-1-1---5-0&sr=1-1&ymm=2005:bmw:330ci

 

My 2000 323i 160K miles still running fine no leak with original 18 yrs old injector o-rings, after 2 heads replacement. dirty sealing surfaces is the main reason for leak, not just aged o-rings.

 

lol dealer

 

Bumping this for feedback - what have you guys experienced? FCPeuro has Elring o-rings that are far less expensive than genuine BMW.

 

Almost anything Elring is a good product.

 

I bought the repalcements from FCPEURO last month. It was $17.00 total, when I priced at the dealer they wanted an astronomical price for just one O-Ring. $17.00 for piece of mind it’s correct isn’t a bad deal.

 

Just did this job on my E46 today. Looks like for the upper I used victor reinz and for the lower I used elring. No issues with either.

While I was in there I replaced the 'quick connect' fuel line.

 

I used the Elring uppers last winter when I replaced a couple leaky injectors only to have them all leak again, even after I replaced all of them twice. I've got stacks of injectors I thought failed until I looked up the specs and found the Elring ones are ever so slightly smaller than OEM - 7.52x3.51 vs. 7.52x3.52 for OEM or Victor Reinz. Could the 0.01mm difference be the reason why they leaked in -20*? I dunno, but before winter hits this year I'll be replacing them all again with OEM ones and we'll find out.

 

How did you determine they were leaking?

 

Visually you could see them leak from between the injector and fuel rail on start up in cold weather. It wasn't enough to spray everywhere but you could watch the entire injector get wet from top to bottom along all 6 - even after replacing them with a set I knew didn't leak. That is why I ended up checking the specs earlier this year and why I want top try OEM ones this year.

 

Any suggestions on how to clean the hole where the injector sits in the intake?

I was afraid to dislodge the grime that was built up.


Sent from my iPhone using E46Fanatics