N55 leaking injector. The problem I had was disconnecting the fuel injectors.

N55 leaking injector This allowed water and more damaging washer fluid to leak into the head causing corrosion. I can see myself replacing at least 1 in the near future. I have been having very rough starts when the car is warm and then when I first put the car into drive or reverse it stumbles hard. Like its predecessor, the N55 is a turbocharged 3. BMW Piezo GDI Injectors are safely tested in specialized GDI test equipment at operating pressures against OEM BMW test plans, utilizing precision measuring devices that measure liquid flow on a shot to shot basis, at actual operatin I have some codes yeah. Acceleration is fine, cruise is fine, idle sucks. e. From there i would start swapping injectors or putting in new ones to see if misfires go away. How to remove it? Compressed air? That will blow fuel everywhere. You could probably get away with just the one injector on the black spark plug cylinder but it would be wise to replace all 6. Dec 19, 2018 · Depending on the year and model of the BMW vehicle, fuel injectors may be one of the components to fail sooner than others, or to run into performance issues over time. I went ahead and replaced all of the injectors with EU5s (Bosch 13647599876) and installed an IDF750 fuel filter + lines to hopefully prevent this May 29, 2023 · Thats always a possibility, i guess. Jan 12, 2022 · It's a '14 xDrive35i with ~66K miles. This box also has 2 plugs, one exiting the middle of the box going to the intake manifold air temp sensor and one going to a sensor at the front of the engine bay. 0L inline-6 cylinder engine utilizing direct fuel injection. When I bought it (97000 miles) it was suggested that I replace with index 12 immediately. 4,392. Now injector whole is filled with gasoline. Aug 31, 2021 · If you leave #2-5 injectors in, you could save time but when reattaching the fuel rail, those injectors need to be properly spaced and its not possible when left in. If he tries to sell you a high pressure pump he is ripping you off. This can cause a number of problems including misfires, rough idling, and poor performance due to lost compression. Had a slight fuel smell (especially at idle) in my 335i. Checking live data of injectors, we have to conclude, that: the injector of cylinder No. Smoke from the valve cover area is common if the leak is bad enough. The injectors have oil in them and during colder temps it thickens and the "valve" doesn't close properly which is causing them the leak. For index 11 injector failures, only replace the failed injector Feb 27, 2020 · General N55 FAQ’s What is the BMW N55? The BMW N55 is a 3. I am actually getting my injectors replaced through a tech I met from BMW. E81 / E82 The problem I had was disconnecting the fuel injectors. The reason for this is the piezo-electric injector uses a quartz crystal stack to control fuel flow versus a solenoid like most conventional injectors. It will likely be pretty obvious when your N55 valve cover is leaking. I also have a 2012 X3 with the N55… same deal. That additional f Today, we're looking at my friend's 335i and testing the old injectors to see which ones have failed. May 12, 2021 · Solved! The injector for cylinder two was bad/leaking. Do NOT replace the HDP High Pressure Fuel Pump if there are no related faults stored in the DME. Find Aug 16, 2024 · I few months ago, my F87 N55 had an injector stick open at a track day and had to be towed back home. Pulls or idling? Appreciate 0 Quote 05-27-2016, 05:36 PM #17: BQTuning. So while chasing a fuel vapor leak only, I started at the injectors in the engine bay to check all the hard lines: 1. 00 Cyl2: 220. Mar 18, 2015 · N54 leaking injector(s) Bimmerpost ☰ Model Selection. I plan to replace the rest of the injectors soon as well. BMW N54 N63 N74 S63 Injector Cleaning and Flow Testing This service is intended for Index 11 and 12 injectors. N55 Engine Problems – Leaking Oil Filter Housing Gasket. Dec 21, 2021 · N54 fuel injectors are piezo-electric injectors; these have more in common with diesel injection than regular gas injectors. I ordered a new injector and misc parts along with a new spark plug (only one as the other five were replaced very recently). Mar 28, 2025 · The N55B30 engine is one in a long line of BMW inline six-cylinder engines. Since I bought this car (and then sold it to my buddy) 2. I haven't had a chance to pull the engine cover and see if there is any leakage, but I'm still smelling a little bit of fuel in the cabin at startup, idle at lights and after parking; regardless of engine temperature. 6 New Spark plugs, 6 New Ignition coils, 6 New Bosch Injectors, New MAF sensor, and a New PCV Valve. What Does Index Mean For BMW Injectors. LEAK. You’ll find Bimmer forums filled with posts by N54 Aug 27, 2024 · Which isn’t a bad idea, but I decided to try fuel system cleaner, injector 4 was leaking a bit, so I would get an occasional misfire and fuel smoke on startup if it sat for days on end. Leaking injectors can cause long crank times, excessive emissions on start-up, oil dilution, and in some cases, engine damage. My personal experience. But misfires arnt only caused by bad injector. Install the high pressure fuel injector line and the new high pressure fuel injector line seal as an assembly onto the engine. No issues when driving, its only noticeable hiccups during a cold start, typical leaking injector symptoms. Posts Mar 6, 2022 · Due to all my previous maintenance/parts replacement, this leads me to the fuel injectors. N55 injectors are solenoid type and are the current Bosch Technology for direct injection gasoline engines. Dec 25, 2022 · However, replacing the leaking gasket is necessary because it may prevent future problems. The leak was dripping oil directly onto the exhaust, and we only noticed it at first because the cabin would fill with an oil smoke smell when stopped (would circulate the smoke in through the A/C but I guess would blow away when the vehicle was moving). Once the valve cover begins leaking, expect some of the following symptoms: Low engine oil light; Burning oil smells, or smoke coming from the valve Nov 23, 2021 · Specs: 2013 135i N55 DCT (stock) 60k miles Short version: - WOT at high elevation - Limp mode - 3 cylinders misfiring - 1 injector stuck open - Replaced injector - No codes or check engine light but… - Loss of power and acceleration (roughly 20% less) - Sounds like shit on cold start - Replaced spark plugs and ignition coils but didn’t 5 . Last edited by jv004; 09-05-2021 at 03:26 PM. You need to check crankcase pressure with a manometer. , cylinders 1-3 or 4-6). May 17, 2023 · If you didn't know, the injector bore is the hole in the head of the engine where the fuel injector sits. Lubricate the new high pressure fuel injector line O-ring with a light coat of clean diesel fuel. Reply reply If the line is tight to your satisfaction and not visibly leaking (engine has to be running to watch for leak, WARE EYE PROTECTION). Very easy to diagnose if you're injectors are working properly or not. That's your option 2. This component is crucial for maintaining the proper fuel pressure for direct injection. I think that’s just the way the N55 is. May 14, 2009 · Step 4: Now locate the black long rectangular electrical box that provides power to the fuel injectors. 3. I am still getting a very bad rough idle and misfires up the A$$. 7. 2. Yet another weak point of the N55 is the Oil Filter Housing Gasket (OFHG), which begins to degrade and leak oil with age. They said it was Index 9 and known to be faulty. I ordered what Apr 14, 2022 · Leak Test. The car was running fine before the change, I would not touch them again until they fail and I don't have a choice. BMW’s N55 engine succeeded the N54 engine, but moved to a single-turbo design as opposed to the twin-turbo N54. to/2RrWrXHTeflon Ring (Injector Seal): https://amzn. An injector stuck open would cause poor fuel mileage and the engine management system would notice it as well as there would be a lot of unburnt fuel in the exhaust and if severe enough, hydrolock the motor. Symptoms: (does not happen all of the time) Rough idling Lost of power Engine malfunction indicator (car goes into limp mode) Hope this helps. 3104 smooth running and most recently P2188 running rich bank 1 at idle. 2 is completely turned off! In this situation, Lambda has to be around 1. An air leak will cause a lean mixture. Just had all 6 injectors replaced almost a 1000 miles ago. I electrically disconnected the injectors one at a time, started the engine and observed the changes, and I discovered that when I remove the wire of injector 1, the ticking sound is gone. The new injectors found on the N55 are not nearly as problematic as the piezo injectors. Replace injectors before 80,000 miles if your BMW is equipped with an early pre-2019 B48. 99 Cyl4: 251. Front Injector (cylinder #1) is abnormally noisy, so much so that you can feel the knocking through the #1 injector hard line going to the primary fuel rail (took a video) and remembering dB is on a logarithmic scale, this injector is much louder than the other 5. -Mechanic has concluded the injectors are leaking (not sure how). Also, a bit of a stumble during idle (borderline misfires). Starting around May 2014 the car wasn't running very well but dealership wouldn't replace second bank without fault codes. Here are several things t Feb 8, 2015 · This is different than the injector stuck open. With that being said, it can be difficult to pinpoint the exact origin of an oil leak. If you are removing fuel injectors to replace the intake manifold and you plan to reuse the fuel injectors, replace all the fuel injector sealing O-rings. Common Symptoms of Damaged or Clogged Fuel Injectors Dec 3, 2013 · [INDUSTRY LEADER] - Bosch has produced over 1 billion fuel injectors and is the number one name in original equipment (OE) injectors, with more than 45 years of gasoline system experience [OPTIMAL PERFORMANCE] – All applications provide precision flow rates and original spray patterns for optimal performance in all driving conditions Oil Leak(picture included) where's it coming from? 2013 BMW 335xi F30 N55 PWG/VRSF DP/ER CP/Injen CAI/AA FMIC/JB4 map 7/Fuel= E50 w/ E85:93oct/Stock LPFP & HPFP Jan 17, 2025 · Below are some of the most common problems associated with the N55 engine. 1. Leak. Jun 24, 2020 · Failing injectors can present themselves in a number of ways, but those same symptoms can be confused with other potential issues. My own car with N53B30 series engine several times experienced leaking of injectors. I just had an injector go bad and in the process, they found another injector to be leaking compression. But we might not have to replace all 6. As a result, the injector oscillated in the head as it leaked and has nearly ruined the tolerance required to seal. Next tighten the 2 middle bolts on the tool. In park the engine would shake the car on Dec 23, 2014 · Dealership replaced Bank 1 December 2013 due to leaking injector. Performing a balance test on the fuel injectors can also help determine if one or more injectors are not functioning correctly. Oct 5, 2012 · I had my fuel injectors replaced on my '11 550 a month ago. to/3gba9ZoInjector I've got a 2013 X5 Xdrive35i with 125k miles. If I didn't tighten a fuel line tight enough, it'd be leaking. Tried to clean the inside of the nut to see if any debris was in there. MAKE THEM REPLACE ALL! If you have one injector leaking, it is likely more will follow soon after. You move the fuel lines out of the way, but I don't see how that would cause problems unless debris got into the little exposed lines which you're supposed to cap while doing the valve cover replacement. May 4, 2023 · Found that the fuel injectors were the culprit and set to replacing them. Changing oil brands can induce temporary consumption. However, that isn’t the case with the N54 fuel injector, as there are numerous reports of owners who had to replace the ones on their cars significantly earlier. # I can't really say for sure since I don't work on the N54, but on the N55 the injectors don't really get touched on a valve cover job. Misfires are from lack of spark or fuel. Jul 27, 2021 · I changed the injectors as preventative maintenance item, besides plugs and coils. Over use of injector cleaners can cause injectors to leak. I took it to the dealership for running rough and they first diagnosed it as bad injectors stating one or two of the injectors were sticking open and continuing to drip extra fuel even after the vehicle was shut off. e. An injector stuck open also wouldn't require the head to be removed. Smell the oil filter and see if it smells like fuel Definitely replace it. 6 . Due to this difference, the injectors with index 11 and higher and injectors with index 10 and lower cannot be mixed on the same engine bank (i. Injector Quantity Compensation and came up with the following values: Cyl1: 224. Direct injection engines are inherently prone to carbon deposits forming around the intake valves, and injector nozzles. Tighten down over the injectors first by hand using the circle grips on the top of the tool on either side. High-Pressure Fuel Pump Failure. 6. One of the most significant issues with the N55 engine is the failure of the high-pressure fuel pump (HPFP). I tore apart and left a stainless steel birds nest in the bore. I have n55 fbo stage 2 93oct bm3. Cylinder 4 checked out okay, the spark plug appeared fine and the injector acted accordingly. Car: 03/2011 N55 Parts Considering To Purchase: 13537620946 - Bosch Fuel Pressure Sensor 13517616446 - HPFP 11787596924 / 11787589475 - Pre Cat o2 Sensor Need any additional info let me know, Trying my best to fix and keep him on the road. #5 was tricky and #6 was fully uncooperative, broke and will NOT come out. And if it becomes loose, that means the injector isn’t getting a proper seal to the engine. Carbon buildup. I have a 2011 335i convertible (N55 engine) with 67,500 miles. Apr 19, 2017 · Hi everyone. An OFHG leak is not a severe problem in the short run, however, not to overly scare anyone, the oil commonly leaks onto the belt tensioner and drive belt. Bosch Injector Overview: Identifying Injector Type Using Test Plan If you suspect the injectors have already been replaced and a mixture fault is stored in the DME then go to the next step. In this video, I’ll share How To Tell If Your BMW Injectors Are Leaking/Clogged! Check Out My BMW N54 335i Setup ⬇️ :JB4: https://burgertuning. Definitely saves you half the price of what the service advisers ask for if you know someone. I have not heard of any tool to remove these metal rings without the risk of dripping small particles in the engine block. Oil consumption seems above normal but not severe (i. Rather than sitting in a fuel rail on the intake manifold, the injectors sit in the cylinder head above the spark plugs. Inconsistent flow rates can signal that an injector is faulty and needs attention. So what caused this is the water retaining channels on the x5 were broken when I bought it. I swapped injector 1 and 2 and tested again. It was available in Apr 13, 2021 · Decoupling Element: https://amzn. Injector problems can occur around 50,000 mile. If you are unable to pull the injectors out, you can use an injector removal tool to remove the injectors. Dec 4, 2013 · So the dealer said one of the fuel injectors is leaking. Again, all 3 cars have/had their plugs/coils done in a timely manner. to/3a6b6ycInjector Removal/Install Tool: https://amzn. Supersessions in Atlas are correct. 39. I have one new injector in cylinder 1 from maybe 20k miles ago and all the plugs and coils are maybe 40k miles ago. There isn't any injectors tests i know of in ISTA. But a local car BMW service specialist (not a dealer) said we can probably replace only the bad injector or the entire bank ( 3 injectors). They have been designed and tested to flow an incredible 55% more fuel than the stock S55 injectors, and 12% more fuel than the EU5 M5 injectors when compared to stock. Enter that injector part number into Atlas and order the quantity needed to repair the vehicle. Aug 26, 2021 · Look up DIY N55 injectors. I probably just replace all the injectors since the car has over 120k miles. Each new version is assigned a new index number. Install the new high pressure fuel injector line seal on to the high pressure fuel injector line. Although not unique to BMW vehicles, fuel injectors are one of the components that may fail prematurely in BMWs. Here, as for an example – the warning in case of the replacement of the injector for N55 engine: Take an injector that was not leaking & if the tip seal is about the same size as the injector tip leave it on and put it into the head in the leaking port and see if the injector has a lot of play side to side( do not apply force it is an aluminum head ) then remove and compare to a different cylinder port that was not leaking. It is a different repair sleeve for each engine and a N55 kit will not Introducing Nostrum Stage 2 N55/S55 Injectors! These are the largest injectors currently available on the market. Which isn’t a bad idea, but I decided to try fuel system cleaner, injector 4 was leaking a bit, so I would get an occasional misfire and fuel smoke on startup if it sat for days on end. The N54 injectors are notorious for having issues but the main problem that causes them to go bad is they will start to leak. Bear in mind these are running at very high pressures, so even minor fluctuations in spray pattern or flow rate will have a big impact on performance. Fault codes 11AC02 – “High pressure plausibility, cold start, pressure too low” (on F10 Sep 17, 2018 · Hey guys, in the midst of an N54 rebuild, and have a question. That allows them to spray their Price Is For A SET Of 6 Injectors. This method allows for a higher volume of fuel to be moved. PPI is proud to announce our patent pending injector bore repair kit for BMW engines. Note: in this post, the most attention is kept to the DME algorithms of fuel management. It replaced the N54, a wildly popular engine known for its potential for big horsepower. 2013 335i N55 fuel leak. HOW TO TEST FUEL INJECTOR ON BMW LEAKING INJECTOR TESTIf you have BMW and you want to test fuel injector on BMW to make sure that the fuel injector is worki Common misfire issues along with the coils or spark plugs N54 N55 335i 135i 535i. Recently, 1 hour into a spirited drive with auto in manual mode and revs around 4000 RPM, the service engine soon light came on along with that half black/orange motor symbol. 1liter/1k miles). Injector needs to come out and seal and decouple ring replaced. May 20, 2019 · Injectors were changed from the piezo style to solenoid style as the piezos had too many issues on the N54, were too expensive, and did not live up to expectations. May 22, 2023 · The N54 fuel injectors are warrantied for 10 year or 120,000 miles. Code: 2BDE - Fuel high pressure on enabling of injection: pressure to low. If you are under warranty, BMW will try to only replace the fuel injector that is leaking. So if you just had your injectors replaced i would check your plugs and coils first. other injector came out just fine. 50. So, one of the injectors of the first bank is leaking much more than initially suspected. Can't catch me: RA sells OEM injectors (with the BMW insignia on them) for $171 each. 00 Cyl5 1. Rep. I am running a JordanTuned flexfuel tune on BM3 and had an E35 mix in the tank when it happened. You may notice burning oil smells in the cabin. Change Fuel Filters Regularly Replace your BMW’s fuel filters at the manufacturer’s recommended intervals, usually every 20,000-30,000 miles or 2-3 years, but depending on your cars’ model and year it was manufactured these intervals can vary. Aug 17, 2015 · First off, the N55 injectors are different from the N54 injectors, which were the Piezo type. So naturally, i start looking at fuel rail prices (because the smaller lines on the rail going to each injector seem to be all one damn piece now unlike the N54) and they are around $650. Lastly, issues with waste-gate rattle were mostly resolved on the N55. Could start by looking into ISTA into fuel pressure at the rail is where it is suppose to be. Now I have a problem with the wires periodically disconnecting from the fuel injectors while driving. Also reinstalling injectors requires replacing the injector seal which is time consuming. May 22, 2019 · This article gives detailed instructions on replacing the fuel injectors in a BMW N55 twin turbo engine. GB's test equipment conducts an automated high-pressure leak test of the injector at rated pressure to ensure all of the injectors are leak-free. I’m assuming my problem is bad injectors. I have the new injection valves, Locktite sealant, the high torque plunger, and the Locktite primer. the injector has leaked before, but at the moment of diagnostics – everything is fine. Inthetechnicaldocumentation n55 fuel pump and injectors r pretty reliable. Once a bank of injectors is at index 11 or higher, the "bank set replacement" requirement no longer applies. Electronic Flow Measurement Mar 22, 2021 · The direct fuel injection on BMW's N20 and N26 engines allowed them to produce a four-cylinder with excellent fuel mileage and plenty of power. I used the tool and everything. We assume correct atomization of leaking injector. Wasn't a huge leak, but was still leaking nonetheless. Evolution of Injector Design: BMW has updated the design of their fuel injectors over time to improve performance and address issues in earlier versions. Next tighten down the Brass bolts on either side of the tool to remove the injectors. I found a video where someone removed the injectors and connected them to the fuel rail outside of the engine and cranked the engine over to see if they leak under high pressure. My 2011 135 with the N55 also did it once in a while when I had it. Banned. Last week, I had to take my car back to the dealer because I was smelling gas and they replaced 2 injectors (again). They will have to replace all 6 as there is a newer model injector and they all should be the same model. showed: coding data of injectors really are value, not code (for example, group code); for each injector data the multiplicator is applied (parameter, which describes flow-rate), additionally, the parameter, describing reaction time of the injector, is counted. N55 even with a bigger turbo is only just as capable of a fully bolt on n54 (e30, 20psi, inlets, etc) with original turbos. Feb 16, 2023 · my n55 fuel injector snapped off at the head leaving me with just the rod part. I’ve seen Dec 13, 2017 · The most common BMW N54 engine problems include high-pressure fuel pump failure, wastegate rattle, clogged or leaky injectors, chargepipe failure, valve cover oil leaks, carbon buildup, VANOS solenoid failure, and water pump failure. Replace leaking injectors as needed. Even though we used a 2011 335i to perform this repair, this article can be applied to any BMW vehicle with the N55 twin turbo including the 1,3,5,7,X3,X6 and Z4 models minor modifications to the repair steps. Appreciate 1 ex46fanatic 45. May 6, 2019 · 3. What you should end up with is all 6 fuel injectors connected to the fuel lines, but pointing upwards. Uh, you obviously have a fuel injector leaking down. Common misfire issues along with the coils Jan 25, 2024 · The additives help clean fuel injectors and prevent carbon buildup that can clog injectors. The tech thinks at some point they were removed and reinstalled without replacing the decoupling element. You should be looking somewhere else for a rich mixture. The Premier Injector Upgrade for S55/N55 Brand: ES#: 4616141 Mfg#: Fuel injectors rarely fail, but when they do, you need quality fuel injector replacements. After the car get driving it’s pretty driveable except the car slightly struggles to find idle when I stop at a light. The tabs that hold the wire into the fuel injectors broke. 40 (because the air flows in in all three cylinders, but the fuel – in only two). Hi, I found out that I didn't tight fuel line on my 6th injector enough and fuel was bit leaking, I drove the car few times, I didn't notice anything, till yesterday. I figured maybe it was too tight so loosened it. 郎 Sounds familiar. Carbon buildup is a common issue that can affect any engine with direct injection such as the B48. New injector swapped in and she runs like a champ again! Thanks for all the help and suggestions! TL/DR: Idle sucks, randomly misses (nothing constant), almost stalls, then surges, sometimes just dies. The plastic was very brittle. Jan 7, 2023 · N55 Valve Cover Gasket Leak Symptoms. The video is of a N54 but you can test the N55 injectors the same way. RA sells the Bosch injectors for $85 each. Finally cylinder 5 injector died and dealership just replaced all six injectors and spark plugs. In the Photo it also looks like the nut holding the rail to cylinder 5 injector Oct 28, 2022 · The fuel injectors shouldn’t cause serious issues on a well-maintained engine until you’re past the 100,000-mile mark. Two times the leaking was thorough and didn’t stop for several hours, both times the injector was replaced. I have to admit, that the remaining 4 injectors have served for more than 300’000 km without any trouble. If you hear/smell that then it's a good chance the seal is damaged. Normally-aspirated E90 engines utilize standard style fuel injectors that mount in the intake manifold runner and spray fuel on the back side of the intake valves. F40Model Year: 2019 + Previous Generations; F20 / F21Model Year: 2012 - 2018. I replaced the injectors on 5 and 6 since they share all the same labor. BMW proudly calls it “EU5 to EU6 conversion procedure”. Please make sure to use the drop down menu and select your correct engine or we will ship a N54 kit by default. I have changed literally everything I can think of regarding fuel and air. Quote 09-10-2021, 06:17 AM BMW SYMPTOMS OF LEAKING FUEL INJECTORIf you want to know the symptoms of leaking fuel injector on BMW and how leaking fuel injector can affect your BMW in th May 27, 2016 · Can easily detect leaking injectors in logs. I did cracked that little egr/oil separator thingy and did get a code on it; replaced it and code went away. Check the residual low-pressure drop (inspect for a leaking injector if the pressure drop is instantaneous). Then listen for a rhythmic hissing from that injector and the smell of unburnt fuel. With my foxwell tool I ran the following tests: Determining Injectors with following value: This engine requires EU5 injectors. com/collection OFHG leak (Idler pulley/belts afterwards)-With OFHG replacement notes of gasket material getting into ducts causing spun rod bearings Valve cover gasket leak (PCV valve related) Oil pan gasket leak Front main seal leak Water pumps & thermostat ($$$) Vanos/boost solenoids Electronic waste gate / valvetronic Electronic steering rack Fuel A n55 is a lot better for a daily for the more reliable injectors alone. Here's the current state of affairs, I can't get anything that can grip the injector hard enough so that I can apply a pulling force or maybe even an air hammer from below. It’s possible your fuel injectors could be leaking and causing a rich mixture. They are going to replace all 6 injectors with labor and taxes in for $2,400. The factory torques the bedplate to the crankcase/block, and then injects sealant into the groove between the two. Definitely does sound like a leaky injector. This service starts by performing a leak test which is a common issue for cold start misfires. How do I code my BMW injectors? Step 1: Replace the Injectors. 0L inline 6 turbocharged, direct-injected gasoline engine produced from 2009-2019. Jul 2, 2022 · Either cylinderhead gasket is blown or even worse cracked engine block- common between cylinders 3 and 4 on n55 - leaking coolant into cylinders causing the misfires. Let's start off with this I know the N54/N55 engines quite well, but am I stumped right now. I think ISTA would recommend removing and reinstalling #1-6 and replacing just #1 and #6. As a side note, if you have a 2011 135i built before 1/1/11 you'll need different injectors, a different injector removal tool, and the actual process is way more labor intensive than an N54 or N55 produced after 1 b) all injectors have to be of one type, it means, if a new, “not leaking” injector is installed, also other injectors have to be replaced with the same “not leaking” injectors. the injector leaks (drips at closed state) at the moment of diagnostics; 2. 11 N55Engine EngineDesignationandEngineIdentification EngineDesignation ThistrainingmaterialdescribestheN55B30M0indetail. Jul 7, 2023 · Having an injector seal installation tool makes this job a snap. if you can drive the car - get the coolant hot and under pressure - pull out spark plugs 3 and 4 and listen for any hissing noises originating from those 2 cylinders, that way The injector I believe is tapped or inserted into a bung in the charge pipe. That has the #5 and #6 injectors basically fused into the head. Consequently, if your fuel injectors are leaking, you can replace them. They called me right away concerned about the chances of having to remove the head to free the broken injector and have been working to get it free, but haven't been successful. I tried this and mine didn’t leak with this test but I think mine leak when they’re hot. Time about an hour. But to me, if i screwed up an injector, i'd should be getting that code. This did not help either. Jul 23, 2024 · N55 Valve Cover Gasket Leak Symptoms. I would suggest removing all of the injectors, and flipping the fuel hardlines upside down, then remount the fuel injectors back onto the fuel hard lines. Injector problems are common with the N55 engine and typically arise around the 50,000-mile mark. Input of injector data and research of injector correction menu. Symptoms of HPFP failure include: I replaced all injectors with injectors from the donor engine. Again, when I got my charge pipe, it actually came with a spot for me to remove a screw to install a methanol injection system. A rich mixture does not usually indicate an air leak. Burning oil smell; Smoke from valve cover area; Oil on spark plugs; Low engine oil light; You shouldn’t notice any N55 drive-ability issues with a leaking valve cover and/or gasket. N55 High Pressure Fuel Pump Failure (HPFP) A high pressure fuel pump is responsible for pumping gasoline from the gas tank to the fuel injectors, where it is then sprayed directly into the cylinders by the N55's direct injection. 484. . It was shredded in the injector bore. Jan 31, 2022 · As I pulled the spark plug (fouled) the injector kept spraying fuel into the port even after disconnecting the battery. This involves measuring the fuel flow from each injector to ensure they are delivering the proper amount of fuel. 00 Cyl3: 189. Then perform a dynamic flow test to visually check the spray pattern of the injector followed by a graduated cylinder volume test to determine any deviation in flow rates. dbjoycc dvlpp irddex wyxylzo usij xebjr smhup pjmoo mnqvx ehbzf ivqn ugsmf osm txaqejl cdzx