I had the same issue with a N42 engine. One sign is gasoline smell from the exhaust or when you take the oil cap off and the bad odor is a dead giveaway. Other issue is also timing of the engine goes out randomly even with new vanos unites and chain installed. Another thing is if the engine runs poor but starts running way better when disconnecting the MAF sensor(+multiplied fault codes from the EMU). Combine that with bad gasoline smell from earlier that is a give way you need new injectors. Or the old ones at least need to be tested. If the vehicle is approaching 250-300k miles it should be something to pay attention do. Sharing here a personal experience :) Hope it helps others. Very good video btw.
Ignition misfires almost always manifest themselves at higher engine loads rather than at idle Fuel Injectors manifest their issues at idle and light load rather than WOT as they go to open loop and rich.
Thats what i'm thinking with my car. It idles slightly rough and when accelerating at low rpms it has a bit of hesitation. When i get on it the car is fine. I have no codes or anything. I replaced plugs already, so I believe it may be a bad injector. Plus it is direct injected and has over 130k on it
Interesting is I have the exact opposite issue 😄 The idle us just fine, low rpms are just fine. But over 4000 rpm it "hesitates" at times or misfires, as Tom said
Thank you so much. My C4 Corvette had many of the symptoms you explained and in all the videos I watched only yours really showed me what a bad injector sounded like. I had slightly rough idle, harder cold start, whitish smoke on start ups. Sounded like gravel in a tin can. So today I will pull the fuel rail, clean and rebuild each injector. Cheers
Out of all the videos I’ve scoured through you have given the best advice and I appreciate it. My n54 blew up 12hours after I purchased it. My friend did a pull and I suggested he didn’t. He weighs 300lbs too. So on my way home it blew up rather violently and seized the engine. I was just in a trip home that night from the dealer had to take my dad home and stay the night there as it was late and it’s a 50+mile drive to my place. I had to take my friend gas can he left over at my parents place when he was helping me move. Now me and him have owned rx8s and he has corvettes so he was a lil enticed to drive the car my 2011 335is and I even suggested he shouldn’t do a pull but he did 4-5 he at loaded pulls with our heavy weight int he car. Now I’ve driven my r3 rx8 with him having 200+hp and that was actually sluggish as ever. But my dad did pint out before I began my voyage home that the car sounded off with a noise and he may have heard a leaking injector he didn’t tell me about the noise until after the motor seized on my way home so the spirited drive was already over and car was fine half way home until it happened so randomly
Gesus! I Feel for you man. I have a 2011 335is 6spd manual myself. I have 90,000kms/55,000miles on mine. What is the mileage or km's on your 2011 335is?
@@mobilekaos my engine blew up from the fact it sucked in a bunch silicon rtv through the crank seal it seems the pulls may have sucked it all in. And during my initial rollout at the dealer going home.
Great video mate!!! You have given me so much peace of mind knowing that my symptoms are specific to injectors... thank you for showing examples and even going more in detail about the importance of this repair. Subbed!
Mine has rough idling at cold starts and car is stuttering ONLY on the highway near the 3-6k RPM band. If I do a quick agressive launch while doing some city driving the car just goes like it’s supposed to. I also do have bad spark plugs though
Well bad spark plugs can definitely cause the issues you're describing. This platform is so touchy that if everything is not just right, it will act funny.
I have a 2010 328i xDrive Sulev. But can't seem to find cheaper fuel injectors. I took out the fuel rail and injectors out of the fuel rail and hooked up a 9 volt battery to clean them out. I thought pretty good,had a wide nice spray. But noticed 5 of the injectors were tough to pull out of the fuel rail. But 1 was easy to pull out and in the fuel rail. I'm thinking it might be that one o ring is bad. And it's causing a leak in while it's tighten down. Everyone, what I do! Keep the fuel injectors and use them. Because they're spraying very good. Just replace that o ring,or should I replace all of them!
I’m currently have my 08 335i at my mechanic for comparison bc of this injector im starting to think its injector 4 bc it’s doing the same thing when it’s cold
Very informative video bro. Thanks a lot. Getting crazy here with my Z4 35i e89 N54. I have misfire in cylinder 2-4-6. I don't do works by myself so car is at garage now. Last year I had injector n2 failing... Now this.... And my mileage is below 35k in all.... 😭
on a cold start my n55 will jump from 500rpm to 1000 a couple times then die. once i takeoff and start driving it’s normal, is this a sign of bad injectors?
Hey hopefully you can see this, have been getting a rough idle and cylinder 3 misfire (29CF), off a cold start rpms flutter around 700-900 rpm, then shakes as it settles down to 600rpm, changed plugs and coils and had an oil change, ran fine for a couple days then rough/shaky idle again as well as threw that same misfire on cylinder 3, checked the new plugs and found more than one covered in fuel, i found it odd that i was only it getting cylinder 3 misfire but more than one plug was covered in fuel so i think it’s leaking from injector #3 into the other plug housings, like your video said checked oil fill cap and smelt gas as well, from everything i’m thinking the injectors, but i don’t have the facilities to remove them and try different combinations to test, just looking for some confirmation/input as i don’t want to go ahead with pricy injectors and them not solve my problem. Thanks
Hi! I am glad I found your videos. I have a problem with my n54 e93 which I can t solve. Maybe you can help me please. I blew the engine a few weeks ago from missfires. I rebuild it, put everything new (pistons, bearings, rods etc.) Now I have good compression, no oil leaks. I changed the sparks and coils. Injectors are index 12 and no one looks like is leaking. The sparks looks clean. My problem is that the car is still missfire and I get no codes. I took the car to dyno to read some logs and when the moment the car missfire the first 3 injectors run too rich. But in other logs it looks like the next 3 injectors run too rich. I have not clue what to do. Maybe an o2 sensor? Or map? The missfire appear only when I have 100% acceleration and it drives strange at constant speed. It looks like it is shaking.
Change upstream and downstream o2 sensors and now you'll want to change the plugs again. Might have to dig deeper if that doesn't help. Valves are all clean after rebuild?
@@SpeedCultureStudios all valves are cleaned. Is there any chance that some injectors can t pump enough fuel and cause missfire in full throttle? I could send you the logs of the dyno if you could read them. I can pay you for that.
535i N55 A little bit of white smoke on cold start but then once the car fully warmed up and you turned it off and get back in a short period of time. It had a rough idle for a couple seconds. Anyways, new injectors fix that problem..
Got SES for P302-P303 and P0175 Installed new spark plugs SES still present Receiving new coils today and will install them this Saturday 9/12 along with inspecting the new spark plugs after sitting overnight to see if there are any fuel on injector 2 and 3. If so it’s injector 2 and 3
Speed Culture Studios wasn’t the coils, had the new spark plugs in and swapped coils 2 to 1 and 3 to 4 and SES still on. Just purchased 6 new injectors today
BRO, i been chasing down a misfire on my n52 for a month now, its just getting worse, white smoke from the tail pipe looks like someone is blowing smoke rings, misfiring like crazy, and after i watched this, i opened my oil cap and put my sniffer down there, literally smells like a gas can, im going to change cylinder 1 injector and oil tomorrow. hopefully all is good after that. thanks :D
Very informative. My 2012 62000km f10 N20 produces a little rough idle on cold start as the rpm settles down from 1200rpm to 700rpm just as your car. It also produces a white smoke on cold start if not driven for 2 days or more. It also produces a strong fuel odor on cold start. The vehicle has a sluggish acceleration in low gears. New spark plugs from fcp euro but they all have black soot. No error code or check engine light. I do alot of short distance drives. So the rough idle issue started right after replacing timing chain kit. The car performs awesome once fully warmed up. Could it be the injectors leaking fuel? Please help
I would say yes there is a good chance you’re having injector issues. Sounds like leaking into the cylinder, which would explain fuel smell at cold start. It’s excess fuel not being burnt. That would lead to black plugs too. I would do injectors and plugs at the same time.
The way your engine blows up with a leaky injector is the worst. It can go boom and maybe enough to contain without blowing the whole car apart. But man it’s sketchy. Even I owned a rx8 it can blow a fireball the size of the Range Rover behind me. Anyways both cars feel like a fire hazard.
I was on cruise control going about 80 and then I got a ticking sound but it only starts happening when I hit about 45 mph anyone know what the problem could be
Hi, I've got a problem with my E90 and I'm wondering what it could be. The symptoms started a couple of weeks ago with, for example, if I shifted from 2nd gear to 3rd gear and stepped on the gas, it started to chop. Kept it like that for a couple of weeks and now it's pretty bad, if I do a cold start the whole car moves, shakes sideways. One day there was no power in it at all. The fault code reader shows misfire on the 6 cylinder, a guy at a workshop put in a used ignition coil and then it got a little better but not great, but have bought 6 new spark plugs, 6 new ignition coils to see if there might be something there, otherwise so maybe it's the fuel injector?
I had a misfire changed all coils and plugs and now it’s still doing it but giving random misfire codes and smells like gas and white smoke coming from under rear of car I hope it’s just injectors
Hey.. e92 coupe issues. I’ve had rough idle for a while esp after a long drive then restart.. but today, it dies while reversing into drive. And yellow EML came on.. thoughts? 👍🏻
Do you know if injectors will cause afr reading to fluctuate for 1 of the banks? I got all new o2s (front n back), reset adaptation, but still getting bank 2 lambda after cat code....
Nice video i'm having same symptoms car starts harder and have misfire no code thou, more on cylinder 3 and I can hear extra loud tick and I have noticed white smoke in morning but goes away, also feels sluggish.
Same exact symptoms as me man. It was cylinder 3 that was my issue. No cel just a misfire and smoke on startup. Changed injectors and it was like a new car!!
Awesome thanks for your reply I don't have same car but everything you described is what is going on with me really bad acceleration and bad gas mileage
Sounds like more than one issue. The sluggishness is probably because in needs the carbon cleaned out, I did brand new index 12s, plugs, coils, carbon cleaning, and all that good stuff. Transformed the way it ran.. I still get some misfire pops on cold starts and some white smoke on cold starts to. Leaned towards eldor coils and new turbos now lol
White smoke can be a lot of things. Coolant yes as in blown head gasket, but white smoke at start up can be a failing injector-you just have to put a few puzzle pieces together. If you have a rough idle only for a minute or so with a bit of white smoke, it’s likely an injector.
@@Out_the_mud94 The last car brand I had was Audi and the equivalent app was VCDS. It had a group you could look at that had a live readout of each cyclinder of how many misfires were being detected. I was hoping there was something like that. But ya, I’m learning to read logs but it’s painful for me lol. I can see where there’s timing corrections but I know there are other indicators in logs for misfiring(like A/F) I just get confused looking at them and how to use it in Datazap or whatever it is
I have a full straight pipe n54 catless dps and all , at random my car will smoke like crazy , I replaced a upstream o2 sensor and that fixed some of my issues but still a good amount of smoke with a fuel smell , any takes on what this could be ?
@@SpeedCultureStudios thanks for the ideas , I’ve been perplexed by this , I have a failed downstream o2 and the other one is throwing a code I think cause of my catless dps, but as far as I know the downstreams don’t affect the fuel ratio ? Idk , thanks you for the comment !
When I started my car and start driving for good 20 mins, and then shut it off for two hours while I was at the store, and then I started the car again. I got stuck in traffic was sitting at full stop idling for about 5 mins and then a lot smoke was coming out from my exhaust for good few mins then it went away. Is that a sign of bad injectors? I know it can't be my turbos. Thanks.
Would green diesel suddenly block the fuel filter? Because as I was trying to jump start the car, the fumes suddenly stopped coming from the exhaust. It's as if something suddenly blocked?😭
Had a code saying one of my injectors was bad I replaced it without coding them but when I took out my old one there was oil on the tip ? Would that be cause my the valve cover having a crack on it ?
The valve cover may not be cracked but the gasket could definitely be leaking. If you have a bad injector, that cylinder is not firing properly either so it may have just been build up and not necessarily “leaked” oil
@@kevthecompass6217 other than clean them off or replace them, no. Replace the gasket sure but what I am saying is that if you put a good injector in there you may not get that build up anymore
@@kevthecompass6217 that’s the N54 for you lol. Coil packs, spark plugs and clean banks solenoids. What index injector did you replace it with? Did you replace all of them? Did you code them?
Very helpful video. Thanks! If you have stock exhaust, and if the exhaust smell very strong, did you find that to be a potential sign of failing injector as well?
I was having the same issue with a strong odor of fuel coming from the car. After doing some research I found out that if the smell is coming from the left rear wheel well there could be a crack in your fuel pressure regulator. I pulled the rear seats off to access the FPR and it had cracks on the top part which was causing it to leak fuel and give off the strong fuel smell.
With this being said I think I have bad injectors and they are pretty expensive for index 12 at the moment how long can I drive like this I think I can pay them in full up but up until a month from now
It’s not great to drive on bad injectors. It puts unnecessary strain on the engine if running lean and can cause issues if you have injectors leaking into your cylinders. Are you getting codes?
My car is giving me back misfires, when it’s nicely warmed up after driving it for a while and when I push the gas peddle it makes popping sounds coming from the exhaust what can it be? And It’s not giving me any codes. PLEASE HELP!
Definitely could be injectors. Could also be bad O2 sensors. “Map” changes once temp is reached so far might start and cold idle fine but after warm it runs funny. O2 sensors are easy to change and relatively inexpensive. Change them out and see if there’s a difference. Clean your vanos solenoids too.
Hey, I’ve been getting random/multiple misfires pretty much in all my cylinders & terrible gas mileage so gradually I was leaning towards my injectors but when I accelerate hard (only when accelerating hard) when driving the engine seems to lose power & heavy white smoke comes out. Could it possibly be a blown head gasket instead or injectors ?
Could possibly be. Check your coolant and oil and see what it looks like. I’d like chocolate milk it’s a head gasket. You may have blown turbos as well or bad coil packs
Hey, I recently switched out all my spark plugs and even the timing chain since my mechanic recommended it, but it still hasn’t gone away.; Could the problems still be failing injectors if the tapping increases when I accelerate or is it likely a valve lifted issue? For some reason I am also getting gas-smelling white smoke out of my exhaust too.
It can definitely be injectors. They are very noisy in the n54 anyway, but if you’re also smelling fuel, you could have a leaking injector/s causing the car to run rich.
hey so quick question uhm I have super thick white smoke coming from exhaust and some super light/faint smoke coming from hood do you think it could be the head gasket or fuel injectors or maybe something more?
Heavy white smoke out the exhaust sounds like a head gasket to me. Could be bad turbos/seals also. Check your coolant to see if there is evidence of oil in it.
For sure! Your engine could be getting way too much fuel in a given cylinder if they are leaking or not getting any fuel in one ore multiple cylinders if they are clogged. It can cause very poor engine operation and misfires.
Im not sure if its my injector that's failing or my hpfp, Im getting codes 29CD - Combustion misfires, cylinder 1, 2AAF Fuel pump, plausibility and 2E18 - Firing Cylinder 1. its on limp mode now. Can i switch the injector 1 and 2 to see if im getting cylinder 2 misfire to determine if in fact it is the injector thats the issue? and can i do that without replacing the rings and decompressor rings simply to diagnose? or can i casue damage this way? My original issue was after hard acceleration especially on the highway the car was choking / shaking. I have replaced the coils and spark plugs , which seemed to fix the issue for a month. few days ago i accelerated hard again and it went into limp mode and i am getting the codes above. Beforfe the limp mode I also got a code 29D9 Misfire at low tank fill level. prior and in addition the the codes above. Any suggestions? if it was the HPFP failing wouldnt I have issues with more than 1 cylinder?
I'm still learning a lot about this platform myself, but this is exactly what I did. I was getting a cylinder 4 misfire. I moved it to #3 and cleared the codes. Code returned as a cylinder 3 misfire. Seemed pretty obvious to me. Now, the small seals at the tip of the injectors, those form to the openings in the cylinder head, so technically, I would not suggest running the car for long without replacing those seals once removed, but if you know one of your injectors is bad, you'll be replacing it anyway. Have you tried checking plugs and coil packs first? Moving coil packs is much easier than moving injectors. If you have a bad one, the misfire will follow it as well.
Speed Culture Studios I recently changed the coils and plugs , I want to diagnose if the injector is bad and do what I did , switch , clear codes and run it for few seconds to see the codes again, I’m just worried switching them without changing the rings , hopefully running it for 30sec or less won’t damage anything ?
I think the risk of burning the injector seat area in the head is always there, it just increases with higher pressures(ie: boost). That said, if you’re misfire is occurring only at idle, AND you’re able to swap 2 injectors very quickly(under 30 seconds?), it probably wouldn’t be an issue. Just remember before driving that the pressure (and more importantly COMBUSTION)will find any discrepancies in the injector seal.
Yea I only get my misfire on the highway, under heavy load. But if I drive easy. Nothing at all. It kinda stalls, like “brrrrp” and then sometimes goes into limp mode. If I let off the gas soon enough it wont go to limp mode.
It can be black due to excess fuel, but excess fuel due to a leaking injector can and will manifest as white smoke at start up particularly in a 335i, which was the case in my situation.
Hey mate, I've been having problems lately as well. Recently replaced all spark plugs and coils but still having a misfire when I start up, the car seems to struggle to keep it's RPM's and I sometimes here the engine drop RPM quickly then go back to normal, is that a injector problem? Also, I can't hit the rev limiter either, if I do, it has a spat attack and comes up saying multiple misfires on cylinder 1 and cylinder 2 when I red line it to 7k.. Just wondering if U could shine some light on what it may be, if it is injectors gonna fork out the money to get index 12's 😬
Sounds like a high potential that you have failing injectors. Could be a vanos issue too, so cleaning them first is a simple trick. Also O2 sensors are a relatively inexpensive fix, but it always seems to come back to injectors. Don’t forget to change plugs again once you upgrade injectors.
@@Out_the_mud94 Thanks for that information but I have found my Bank 1 before cat O2 sensor is damaged because of when the mechanic put my VRSF downpipes in, he didn't line the pipes up right and damaged the O2, bank 1 is stuck at 21 AFR so it would be pulling timing and causing all sorts of misfires
I had the same car- straight up money pit! Get rid of while its good. Even dealership don't wanna give you anything on a trade-in for this car. Good riddance...
They can be money pits if they aren’t taken care of. They just have so much potential, but it is very difficult to find a decent one now. And no, dealerships aren’t not going to give a good trade value on any 10-15 year old car at this point lol
Where are your videos, bud? Super old vid by the way - sure I’d be a bit more fluid these days, but I’d tell you the same thing in an INTRO. hardly need to write a script though. Just chill and skip to 1:01. Again, where are your videos?
![SAFEPLANET - ดาวเคราะห์ [ THE PLANET ]](http://i.ytimg.com/vi/4X1XL3I_k3c/mqdefault.jpg)
I had the same issue with a N42 engine. One sign is gasoline smell from the exhaust or when you take the oil cap off and the bad odor is a dead giveaway. Other issue is also timing of the engine goes out randomly even with new vanos unites and chain installed. Another thing is if the engine runs poor but starts running way better when disconnecting the MAF sensor(+multiplied fault codes from the EMU). Combine that with bad gasoline smell from earlier that is a give way you need new injectors. Or the old ones at least need to be tested.
If the vehicle is approaching 250-300k miles it should be something to pay attention do. Sharing here a personal experience :) Hope it helps others. Very good video btw.
Ignition misfires almost always manifest themselves at higher engine loads rather than at idle Fuel Injectors manifest their issues at idle and light load rather than WOT as they go to open loop and rich.
Thats what i'm thinking with my car. It idles slightly rough and when accelerating at low rpms it has a bit of hesitation. When i get on it the car is fine. I have no codes or anything. I replaced plugs already, so I believe it may be a bad injector. Plus it is direct injected and has over 130k on it
Thank you very much, Tom. Now I'm sure my car "just" misfires and it doesn't need new injectors 👍
Interesting is I have the exact opposite issue 😄 The idle us just fine, low rpms are just fine. But over 4000 rpm it "hesitates" at times or misfires, as Tom said
@@godzilla7391did you get a CEL when this happened? i know this was 2 years ago my bad lol
@@patrikhala1910 what you found about this ?
Thank you so much.
My C4 Corvette had many of the symptoms you explained and in all the videos I watched only yours really showed me what a bad injector sounded like.
I had slightly rough idle, harder cold start, whitish smoke on start ups.
Sounded like gravel in a tin can.
So today I will pull the fuel rail, clean and rebuild each injector.
Cheers
Out of all the videos I’ve scoured through you have given the best advice and I appreciate it. My n54 blew up 12hours after I purchased it. My friend did a pull and I suggested he didn’t. He weighs 300lbs too. So on my way home it blew up rather violently and seized the engine. I was just in a trip home that night from the dealer had to take my dad home and stay the night there as it was late and it’s a 50+mile drive to my place. I had to take my friend gas can he left over at my parents place when he was helping me move. Now me and him have owned rx8s and he has corvettes so he was a lil enticed to drive the car my 2011 335is and I even suggested he shouldn’t do a pull but he did 4-5 he at loaded pulls with our heavy weight int he car. Now I’ve driven my r3 rx8 with him having 200+hp and that was actually sluggish as ever. But my dad did pint out before I began my voyage home that the car sounded off with a noise and he may have heard a leaking injector he didn’t tell me about the noise until after the motor seized on my way home so the spirited drive was already over and car was fine half way home until it happened so randomly
Dang that sucks!
Gesus! I Feel for you man. I have a 2011 335is 6spd manual myself. I have 90,000kms/55,000miles on mine.
What is the mileage or km's on your 2011 335is?
@@mobilekaos my 2011 335is had 125,000 miles
@@mobilekaos my engine blew up from the fact it sucked in a bunch silicon rtv through the crank seal it seems the pulls may have sucked it all in. And during my initial rollout at the dealer going home.
So I’ve had to investigate but my new engines almost in I’ve spent quality time getting it ready after purchasing a long block N54 with 89,000 miles
Best video i ever watch about N54 injector(s) sir
Awesome man! I appreciate that!
Wow, one of the most helpful videos I have ever watched, thank you, I got all those symptoms lol
That’s awesome to hear! Thanks for checking it out
Great video mate!!! You have given me so much peace of mind knowing that my symptoms are specific to injectors... thank you for showing examples and even going more in detail about the importance of this repair. Subbed!
Glad it helped!! Thanks for the support!
I had a high idle and white smoke right before one injector failed on my N20-528i.
Mine has rough idling at cold starts and car is stuttering ONLY on the highway near the 3-6k RPM band. If I do a quick agressive launch while doing some city driving the car just goes like it’s supposed to. I also do have bad spark plugs though
Well bad spark plugs can definitely cause the issues you're describing. This platform is so touchy that if everything is not just right, it will act funny.
I have a 2010 328i xDrive Sulev.
But can't seem to find cheaper fuel injectors.
I took out the fuel rail and injectors out of the fuel rail and hooked up a 9 volt battery to clean them out. I thought pretty good,had a wide nice spray. But noticed 5 of the injectors were tough to pull out of the fuel rail. But 1 was easy to pull out and in the fuel rail. I'm thinking it might be that one o ring is bad. And it's causing a leak in while it's tighten down.
Everyone, what I do!
Keep the fuel injectors and use them. Because they're spraying very good.
Just replace that o ring,or should I replace all of them!
Would bad or failing injectors cause car to stall at stop light
Yes it definitely could, especially if you have multiples failing, potentially starving the engine of fuel.
white smoke usally is normal for petrol cars, just a vapor, cold warm combo
No not really. Not during summer months
I’m currently have my 08 335i at my mechanic for comparison bc of this injector im starting to think its injector 4 bc it’s doing the same thing when it’s cold
Very informative video bro. Thanks a lot. Getting crazy here with my Z4 35i e89 N54. I have misfire in cylinder 2-4-6. I don't do works by myself so car is at garage now. Last year I had injector n2 failing... Now this.... And my mileage is below 35k in all.... 😭
Typical n54 stuff lol. Love the platform tho!
You’ll get it sorted out
@@SpeedCultureStudios thanks for the support. Very much appreciated 🙏
This was very in detail - and very helpful. Thank you!
Glad to hear it! Thanks for watching and taking time to comment!
Yea i got brand new coils and spark plug but my damn exhaust is loud asf and im under boot like hell
Hello, I have the 335i 2009 convertible, the angel eye shakes and turns off, can you tell me if i need to change it or what I should do? thanks.
nice video 🔥🔥
Dude didn’t think I’d see u here
on a cold start my n55 will jump from 500rpm to 1000 a couple times then die. once i takeoff and start driving it’s normal, is this a sign of bad injectors?
Could be, yes. I'd start with the easy stuff first though, plugs and coils.
Sounds like high pressure fuel pump to me. Have rail pressure tested
Great video. Thanks for sharing!
Thanks for your symptoms. My car does need new injectors! 👌great video.
Glad it was useful!
Hey hopefully you can see this, have been getting a rough idle and cylinder 3 misfire (29CF), off a cold start rpms flutter around 700-900 rpm, then shakes as it settles down to 600rpm, changed plugs and coils and had an oil change, ran fine for a couple days then rough/shaky idle again as well as threw that same misfire on cylinder 3, checked the new plugs and found more than one covered in fuel, i found it odd that i was only it getting cylinder 3 misfire but more than one plug was covered in fuel so i think it’s leaking from injector #3 into the other plug housings, like your video said checked oil fill cap and smelt gas as well, from everything i’m thinking the injectors, but i don’t have the facilities to remove them and try different combinations to test, just looking for some confirmation/input as i don’t want to go ahead with pricy injectors and them not solve my problem.
Thanks
Sounds like injectors to me. They are very easy to remove and replace, so you may be able to do it yourself.
@@SpeedCultureStudios Greatly appreciated, thank you for the quick response and input. Subscribed
@@dylanlapierre456 No problem! And thanks for subscribing. It's greatly appreciated!
Hi! I am glad I found your videos.
I have a problem with my n54 e93 which I can t solve. Maybe you can help me please. I blew the engine a few weeks ago from missfires. I rebuild it, put everything new (pistons, bearings, rods etc.) Now I have good compression, no oil leaks. I changed the sparks and coils. Injectors are index 12 and no one looks like is leaking. The sparks looks clean. My problem is that the car is still missfire and I get no codes. I took the car to dyno to read some logs and when the moment the car missfire the first 3 injectors run too rich. But in other logs it looks like the next 3 injectors run too rich. I have not clue what to do. Maybe an o2 sensor? Or map?
The missfire appear only when I have 100% acceleration and it drives strange at constant speed. It looks like it is shaking.
Change upstream and downstream o2 sensors and now you'll want to change the plugs again. Might have to dig deeper if that doesn't help. Valves are all clean after rebuild?
@@SpeedCultureStudios all valves are cleaned. Is there any chance that some injectors can t pump enough fuel and cause missfire in full throttle? I could send you the logs of the dyno if you could read them. I can pay you for that.
I have that same car and always thought is a 328i
Big help man. That's exactly what my BMW bz4 is doing. Thank you
I'm glad it helped! If you have older index injectors, it's almost a guarantee that they are causing the issue.
Very helpful video! I'm have 7 of those steps.
535i N55 A little bit of white smoke on cold start but then once the car fully warmed up and you turned it off and get back in a short period of time. It had a rough idle for a couple seconds. Anyways, new injectors fix that problem..
Boom
Got SES for P302-P303 and P0175
Installed new spark plugs SES still present
Receiving new coils today and will install them this Saturday 9/12 along with inspecting the new spark plugs after sitting overnight to see if there are any fuel on injector 2 and 3.
If so it’s injector 2 and 3
Hopefully coils clear it up!
Speed Culture Studios wasn’t the coils, had the new spark plugs in and swapped coils 2 to 1 and 3 to 4 and SES still on. Just purchased 6 new injectors today
Aaron Tang oh dang! Sucks to bite that bullet but it’ll run like a new car now!
Gotta resolve it quick before its gets worst than being injectors lol
@@A____T3750 hi Aaron, was it the injectors?
BRO, i been chasing down a misfire on my n52 for a month now, its just getting worse, white smoke from the tail pipe looks like someone is blowing smoke rings, misfiring like crazy, and after i watched this, i opened my oil cap and put my sniffer down there, literally smells like a gas can, im going to change cylinder 1 injector and oil tomorrow. hopefully all is good after that. thanks :D
That’ll do it! Just to be safe, I’d put fresh oil in it. Idle it for 10-20 minutes then drain it and put fresh oil in it again.
I got charged 2k to fix 3.. and a oil leak
@@lifeclips3329 ouch
Very informative. My 2012 62000km f10 N20 produces a little rough idle on cold start as the rpm settles down from 1200rpm to 700rpm just as your car. It also produces a white smoke on cold start if not driven for 2 days or more. It also produces a strong fuel odor on cold start. The vehicle has a sluggish acceleration in low gears. New spark plugs from fcp euro but they all have black soot. No error code or check engine light. I do alot of short distance drives. So the rough idle issue started right after replacing timing chain kit. The car performs awesome once fully warmed up. Could it be the injectors leaking fuel? Please help
I would say yes there is a good chance you’re having injector issues. Sounds like leaking into the cylinder, which would explain fuel smell at cold start. It’s excess fuel not being burnt. That would lead to black plugs too. I would do injectors and plugs at the same time.
@SpeedCultureStudios thanks for your reply. How do I check to confirm it's the injectors leaking fuel and not the HPFP?
The way your engine blows up with a leaky injector is the worst. It can go boom and maybe enough to contain without blowing the whole car apart. But man it’s sketchy. Even I owned a rx8 it can blow a fireball the size of the Range Rover behind me. Anyways both cars feel like a fire hazard.
I was on cruise control going about 80 and then I got a ticking sound but it only starts happening when I hit about 45 mph anyone know what the problem could be
Thank you my 230e Benz is having contaminated engine oil!I think it's them thank you black smoke 2
Yep that’s probably it
Hi, I've got a problem with my E90 and I'm wondering what it could be. The symptoms started a couple of weeks ago with, for example, if I shifted from 2nd gear to 3rd gear and stepped on the gas, it started to chop. Kept it like that for a couple of weeks and now it's pretty bad, if I do a cold start the whole car moves, shakes sideways. One day there was no power in it at all. The fault code reader shows misfire on the 6 cylinder, a guy at a workshop put in a used ignition coil and then it got a little better but not great, but have bought 6 new spark plugs, 6 new ignition coils to see if there might be something there, otherwise so maybe it's the fuel injector?
Could definitely be the injector. And if it’s the injector, you’ll want to change the spark plug again
Who else liked when their car made those pops at cold start and sounded like it was cammed when you had bad fuel injectors? lol
Here I am thinking the knocking noise is a bad engine 💀
Bro this was literally me
Me right now lol
Faaack me too , it sounds awesome but then it feels like it slips when it warms up :(
The n55 will put you threw it is that my rod knocking or injector going at it
I had a misfire changed all coils and plugs and now it’s still doing it but giving random misfire codes and smells like gas and white smoke coming from under rear of car I hope it’s just injectors
Sounds like injectors.
Hey.. e92 coupe issues. I’ve had rough idle for a while esp after a long drive then restart.. but today, it dies while reversing into drive. And yellow EML came on.. thoughts? 👍🏻
Do you know if injectors will cause afr reading to fluctuate for 1 of the banks? I got all new o2s (front n back), reset adaptation, but still getting bank 2 lambda after cat code....
I would say that it could. If you have not changed out injectors, its very possibly you are running rich or running lean on one bank. No misfires?
@@SpeedCultureStudios appreciate it, no misfire codes yet. Just o2 code. Ya it never been replaced before. I'm going to replace it with them 12s.
Nice video i'm having same symptoms car starts harder and have misfire no code thou, more on cylinder 3 and I can hear extra loud tick and I have noticed white smoke in morning but goes away, also feels sluggish.
Same exact symptoms as me man. It was cylinder 3 that was my issue. No cel just a misfire and smoke on startup. Changed injectors and it was like a new car!!
Awesome thanks for your reply I don't have same car but everything you described is what is going on with me really bad acceleration and bad gas mileage
Sounds like more than one issue. The sluggishness is probably because in needs the carbon cleaned out, I did brand new index 12s, plugs, coils, carbon cleaning, and all that good stuff. Transformed the way it ran.. I still get some misfire pops on cold starts and some white smoke on cold starts to. Leaned towards eldor coils and new turbos now lol
Can Bad Injectors make the small fuel rails on top vibrate more than the others ?
I suppose so. Anything is possible
I thought white smoke means coolant burning. Should it be black carbon smoke?
White smoke can be a lot of things. Coolant yes as in blown head gasket, but white smoke at start up can be a failing injector-you just have to put a few puzzle pieces together. If you have a rough idle only for a minute or so with a bit of white smoke, it’s likely an injector.
Is it possible to live monitor all/individual cylinder misfires w/ProTool or mhd or any other software?
Mhd may allow that. I didn’t get too far into Mhd before selling the car, so I hope someone else can chime in for you!
I data log should give you the info you are looking for. Just need somebody who can look at it and understand it
@@Out_the_mud94 The last car brand I had was Audi and the equivalent app was VCDS. It had a group you could look at that had a live readout of each cyclinder of how many misfires were being detected. I was hoping there was something like that.
But ya, I’m learning to read logs but it’s painful for me lol. I can see where there’s timing corrections but I know there are other indicators in logs for misfiring(like A/F) I just get confused looking at them and how to use it in Datazap or whatever it is
would another symptom be a very strong gas smell?
Yes definitely could be.
But also check your fuel regulator housing under the back seat driver side. I have a video on that as well!
@@SpeedCultureStudiosthat’s the name of your video my car engine smells like gas and it’s misfiring bad
Who does wal but blasting in trying to get it done to my 335i? Pls comment if you know any locations
Where are you located?
I have a full straight pipe n54 catless dps and all , at random my car will smoke like crazy , I replaced a upstream o2 sensor and that fixed some of my issues but still a good amount of smoke with a fuel smell , any takes on what this could be ?
Could be a leaking injector or bad coil pack. Showing any codes or misfires? Could have a bad turbo too but I’d check the cheap and easy stuff first
@@SpeedCultureStudios thanks for the ideas , I’ve been perplexed by this , I have a failed downstream o2 and the other one is throwing a code I think cause of my catless dps, but as far as I know the downstreams don’t affect the fuel ratio ? Idk , thanks you for the comment !
And no misfires anymore I had bank 2 misfires till I replaced my bank 2 sensor 1 o2
Is your engine more silent now at idle? Mine sounds exactly like yours on the video
With new injectors, it got slightly quieter, but these are pretty noisy engines, especially when you have the engine cover off
@@SpeedCultureStudios thanks for the reply!
@@Barillaa no problem!
When I started my car and start driving for good 20 mins, and then shut it off for two hours while I was at the store, and then I started the car again. I got stuck in traffic was sitting at full stop idling for about 5 mins and then a lot smoke was coming out from my exhaust for good few mins then it went away. Is that a sign of bad injectors? I know it can't be my turbos. Thanks.
Potentially.
I know its been 5 months but i had the same issue u have. I fixed it by replacing the pcv valve with an RB PCV.
It can always been the turbos. New ones can fail. But start with pvc if you haven’t yet lol
never mix index 11or 12s w lower index #s. 11and 12s are only able to function properly with ea other just a fyi
That is correct. I believe I mention that in other videos. Good point!
Would green diesel suddenly block the fuel filter? Because as I was trying to jump start the car, the fumes suddenly stopped coming from the exhaust. It's as if something suddenly blocked?😭
Did you put diesel in the car?
@@SpeedCultureStudios yes it's a diesel with about half a tank of green in it.
Thank you for very informative problem of the misfires caused by fuel injectors
Glad it was helpful!
Had a code saying one of my injectors was bad I replaced it without coding them but when I took out my old one there was oil on the tip ? Would that be cause my the valve cover having a crack on it ?
The valve cover may not be cracked but the gasket could definitely be leaking. If you have a bad injector, that cylinder is not firing properly either so it may have just been build up and not necessarily “leaked” oil
@@SpeedCultureStudios is there any way to remove that build up ? I plan on doing my valve cover this week and I’m tired of it misfiring lol
@@kevthecompass6217 other than clean them off or replace them, no. Replace the gasket sure but what I am saying is that if you put a good injector in there you may not get that build up anymore
@@SpeedCultureStudios put a good injector in there still slightly misfiring lol 😬😬
@@kevthecompass6217 that’s the N54 for you lol. Coil packs, spark plugs and clean banks solenoids.
What index injector did you replace it with? Did you replace all of them? Did you code them?
Did u buy new injectors and what kind
Yes. From FCP euro. Totally solved the issue. Car ran perfectly after that!
Excellent video! Thank you!
Thanks for taking a look!
Do i need to change all of them? Can i just change the bad ones?
It’s always best to change them all. At the very least, change the three on a single bank.
Very helpful video. Thanks! If you have stock exhaust, and if the exhaust smell very strong, did you find that to be a potential sign of failing injector as well?
I did not notice extra strong fuel smell as it related to the injectors, but it could certainly be a sign.
I was having the same issue with a strong odor of fuel coming from the car. After doing some research I found out that if the smell is coming from the left rear wheel well there could be a crack in your fuel pressure regulator. I pulled the rear seats off to access the FPR and it had cracks on the top part which was causing it to leak fuel and give off the strong fuel smell.
@@robertharo6081 I have a video posted of this repair you’re talking about as well.
With this being said I think I have bad injectors and they are pretty expensive for index 12 at the moment how long can I drive like this I think I can pay them in full up but up until a month from now
It’s not great to drive on bad injectors. It puts unnecessary strain on the engine if running lean and can cause issues if you have injectors leaking into your cylinders. Are you getting codes?
@@SpeedCultureStudios no check engine light but last time I got it walnut blasted witch was when all of this started it pulled up cylinder 3
@@bam12383 I assume you've done plugs and coils and o2 sensors?
@@SpeedCultureStudios yes indeed
@@bam12383 it always seems to come back to injectors
My car is giving me back misfires, when it’s nicely warmed up after driving it for a while and when I push the gas peddle it makes popping sounds coming from the exhaust what can it be? And It’s not giving me any codes. PLEASE HELP!
Start the process. Spark plugs, coil packs, injectors…
@@SpeedCultureStudios I did I already checked the ignition coils and the spark plugs they’re good
@@SpeedCultureStudios do u live in Nc?
@@younggamer4891 SC
@@younggamer4891 I didn’t say “check” them. Change them.
What about if when you step on the car a little bit smoke comes out the exhaust and a really bad smell
Could be a number of things, but potentially yes. Could be bad turbo seals too
Thank you buddy!
Thank you!
Loved the video !
Thank you!!
What if it starts running shitty after a 30 minute drive???
Definitely could be injectors. Could also be bad O2 sensors. “Map” changes once temp is reached so far might start and cold idle fine but after warm it runs funny. O2 sensors are easy to change and relatively inexpensive. Change them out and see if there’s a difference. Clean your vanos solenoids too.
I have every sign lol I think it's time to change my injectors. Great video
Probably a good idea!
any update?
Hey, I’ve been getting random/multiple misfires pretty much in all my cylinders & terrible gas mileage so gradually I was leaning towards my injectors but when I accelerate hard (only when accelerating hard) when driving the engine seems to lose power & heavy white smoke comes out. Could it possibly be a blown head gasket instead or injectors ?
Could possibly be. Check your coolant and oil and see what it looks like. I’d like chocolate milk it’s a head gasket. You may have blown turbos as well or bad coil packs
Do i need to code the new injectors?
Yes
Greeeeaaaaat video!!!
Thanks a lot!
Hey, I recently switched out all my spark plugs and even the timing chain since my mechanic recommended it, but it still hasn’t gone away.;
Could the problems still be failing injectors if the tapping increases when I accelerate or is it likely a valve lifted issue? For some reason I am also getting gas-smelling white smoke out of my exhaust too.
It can definitely be injectors. They are very noisy in the n54 anyway, but if you’re also smelling fuel, you could have a leaking injector/s causing the car to run rich.
I wonder how much for a replacement for 2007 525i
I’m not sure which injectors those take but these are expensive!
You can always consider rebuilt original ones! :)
hey so quick question uhm I have super thick white smoke coming from exhaust and some super light/faint smoke coming from hood do you think it could be the head gasket or fuel injectors or maybe something more?
Heavy white smoke out the exhaust sounds like a head gasket to me. Could be bad turbos/seals also. Check your coolant to see if there is evidence of oil in it.
@@SpeedCultureStudios yeah when it first happened there was some chocolate milk where the oil cap goes
@@Melljell I would say head gasket
@@SpeedCultureStudios yeah im hoping so haha it'd even idle for a bit and then stall out on me
Great job
Thanks for watching!
Thanks bro 👌💪💪
I think my Injectors are going bad, my car just misfired yesterday 29ce cylinder 2 and my gas tank cap was stolen 😭
Dang man!
Thank's!
How many injectors does a bmw 5 series have
Which 5 series?
@@SpeedCultureStudios 535d 2006
Hi mate. Would failing injectors also cause huge power loss?
For sure! Your engine could be getting way too much fuel in a given cylinder if they are leaking or not getting any fuel in one ore multiple cylinders if they are clogged. It can cause very poor engine operation and misfires.
Im not sure if its my injector that's failing or my hpfp, Im getting codes 29CD - Combustion misfires, cylinder 1, 2AAF Fuel pump, plausibility and 2E18 - Firing Cylinder 1. its on limp mode now. Can i switch the injector 1 and 2 to see if im getting cylinder 2 misfire to determine if in fact it is the injector thats the issue? and can i do that without replacing the rings and decompressor rings simply to diagnose? or can i casue damage this way?
My original issue was after hard acceleration especially on the highway the car was choking / shaking. I have replaced the coils and spark plugs , which seemed to fix the issue for a month. few days ago i accelerated hard again and it went into limp mode and i am getting the codes above.
Beforfe the limp mode I also got a code 29D9 Misfire at low tank fill level. prior and in addition the the codes above.
Any suggestions? if it was the HPFP failing wouldnt I have issues with more than 1 cylinder?
I'm still learning a lot about this platform myself, but this is exactly what I did. I was getting a cylinder 4 misfire. I moved it to #3 and cleared the codes. Code returned as a cylinder 3 misfire. Seemed pretty obvious to me.
Now, the small seals at the tip of the injectors, those form to the openings in the cylinder head, so technically, I would not suggest running the car for long without replacing those seals once removed, but if you know one of your injectors is bad, you'll be replacing it anyway.
Have you tried checking plugs and coil packs first? Moving coil packs is much easier than moving injectors. If you have a bad one, the misfire will follow it as well.
Speed Culture Studios I recently changed the coils and plugs , I want to diagnose if the injector is bad and do what I did , switch , clear codes and run it for few seconds to see the codes again, I’m just worried switching them without changing the rings , hopefully running it for 30sec or less won’t damage anything ?
@@dee1251 did you switch them?
I think the risk of burning the injector seat area in the head is always there, it just increases with higher pressures(ie: boost).
That said, if you’re misfire is occurring only at idle, AND you’re able to swap 2 injectors very quickly(under 30 seconds?), it probably wouldn’t be an issue. Just remember before driving that the pressure (and more importantly COMBUSTION)will find any discrepancies in the injector seal.
Yea I only get my misfire on the highway, under heavy load. But if I drive easy. Nothing at all. It kinda stalls, like “brrrrp” and then sometimes goes into limp mode. If I let off the gas soon enough it wont go to limp mode.
excess fuel would be black smoke
It can be black due to excess fuel, but excess fuel due to a leaking injector can and will manifest as white smoke at start up particularly in a 335i, which was the case in my situation.
Hey mate, I've been having problems lately as well. Recently replaced all spark plugs and coils but still having a misfire when I start up, the car seems to struggle to keep it's RPM's and I sometimes here the engine drop RPM quickly then go back to normal, is that a injector problem?
Also, I can't hit the rev limiter either, if I do, it has a spat attack and comes up saying multiple misfires on cylinder 1 and cylinder 2 when I red line it to 7k.. Just wondering if U could shine some light on what it may be, if it is injectors gonna fork out the money to get index 12's 😬
Sounds like a high potential that you have failing injectors. Could be a vanos issue too, so cleaning them first is a simple trick. Also O2 sensors are a relatively inexpensive fix, but it always seems to come back to injectors.
Don’t forget to change plugs again once you upgrade injectors.
Have you cleaned the intake ports? Mine were so bad when I got the car I was having same issues as you
@@Out_the_mud94 Thanks for that information but I have found my Bank 1 before cat O2 sensor is damaged because of when the mechanic put my VRSF downpipes in, he didn't line the pipes up right and damaged the O2, bank 1 is stuck at 21 AFR so it would be pulling timing and causing all sorts of misfires
@@Out_the_mud94 Definitely could be a gummed up valves! Good call. Mine were terrible too!
Dude looks like a polished Mac de Marco
no resemblance
I had the same car- straight up money pit! Get rid of while its good. Even dealership don't wanna give you anything on a trade-in for this car. Good riddance...
They can be money pits if they aren’t taken care of. They just have so much potential, but it is very difficult to find a decent one now. And no, dealerships aren’t not going to give a good trade value on any 10-15 year old car at this point lol
Mac Demarco? Is that you?
No. No relation. No resemblance. This has been addressed in a previous video lol
1 minute into video and dude is still repeating the same thing. write a script its not that hard.
Where are your videos, bud? Super old vid by the way - sure I’d be a bit more fluid these days, but I’d tell you the same thing in an INTRO. hardly need to write a script though. Just chill and skip to 1:01. Again, where are your videos?
Please just list the 8 then have the dialogue
Please just watch the video and support a growing TH-camr.