We’re going to remove the mystery and fear surrounding N54 fuel injector replacement.
Buy the product here: https://www.fcpeuro.com/products/bmw-fuel-injector-kit-13538616079kt
The N54 engine is a very popular platform with enthusiasts because of the potential power that can be unlocked. The stock fuel system was designed by BMW to be overkill, and unlike other direct injection cars, you can still drive at highway speed with a high pressure fuel pump failure. While this is impressive, the N54 fuel system as a whole can be a trouble spot on aging cars. One of the most common failures with the N54 is fuel injectors.
N54 fuel injectors are a piezo-electric injector and have more in common with diesel injection than regular gas injectors. The reason for this is the piezo style injector uses a quartz crystal stack to control fuel flow vs a solenoids like most conventional injectors. This allows for a massive volume of fuel to be moved. The main failure on earlier injectors is clogs and foreign debris restricting flow. These injectors have a built-in filter which on earlier injectors is known to melt at high temperatures. Once the filter fails the injector can no longer function properly.
BMW redesigned these injectors numerous times to address these failures. While some vehicles are still warrantied to this date, many of these cars have received replacement injectors numerous times over the course of their service life. What is important to know, is the updated injectors cannot be mixed with original style injectors. Anything injector marked 10 or lower in the same cylinder bank will require all the injectors in the bank to be replaced.
FCP Euro currently sells an injector that BMW uses for warranty repair. The reason this injector exists is to reduce the cost of warranty repairs to the dealers before they are reimbursed for parts and labor by BMW and to reduce the number of failures reported. There are two numbers at this time that you can order which are 13538648937 or 13538616079. 13538648937 is associated with SIB 13 08 15 which is for the S63 engine. This injector originally received a material update which was an improved internal filter which should not melt like in early injectors. At the present both 13538648937 and 13538616079 are the same injector with the same material update. The only difference is a significant cost savings. We prefer to sell the lower cost and equal injector to save customers which cannot qualify for warranty a significant sum of our of pocket expense. We also have a detailed blog article about this if you would like more information via the link below:
Read more here: https://blog.fcpeuro.com/how-to-replace-the-fuel-injectors-on-a-bmw-n54
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Hoping to get a reply, I recently purchased spark plugs from FCP to deal with multiple misfires, found the previous owner left a hose clamp loose so oil has been dumping onto the plugs. All coil packs are good and the plugs slightly fixed the misfire. Injector 6 is stuck open and flooding the cylinder so the plug can’t spark. Ordered the injectors from FCP but what would be the easiest way to access the tune to calibrate the new injectors? I have a pc but it’s very old and slow, and this is also my first time with a German time. Owned for almost three years so I’ve learned quite a lot, but calibrating the injectors has me stumped. Any tips?
I upgraded my injectors to -12's and now I'm unable to save the values after inputing them, any suggestions?
do you have a part number for the injector tool you used to pull the injectors? Thank you for the video
You say install retaining clip, this is the decoupler right? Is there a way to tell if I'm missing my decoupler without removing my injectors? I have a persistent cylinder 4 misfire, replaced spark plug, coil and walnut blasted yesterday but still have persistent cylinder 4 misfire. Any leads would be appreciated!
How yo install the injector bracket curve side up or down
what wrench, wrench extension and socket to use to pull brackets which holds fuel injectors????
When u remove the cover for the spark plug tip exposing the Teflon seal, you must install it very quickly so the seal forms a proper seal. When installing used injectors YOU MUST use new Teflon seals and use a proper install kit. You don’t wanna just stick in a used injector. Can damage cylinder and you know til down the road. I have all my parts and tools and will be installing and coding injectors for n54
Edit: Install successful and new teflon seals are a must. Or u will get a misfire at higher loads
excellent video
Another excellent video Mr. Foley!
Where do we get ISTA+ to code the injectors?
Work like this and spark plugs require disconnecting car battery at neg or positive? Assuming no but been trying to confirm by watching as many diy videos and only seen one person mention battery disconnect. Thanks and love the helpful videos