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      12-26-2015, 09:39 AM   #23
djDori_C
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Wow!
Well congrats on a new motor!
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      12-26-2015, 06:55 PM   #24
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First of all thank you for great pics and information of how to accomplish.

I think your a 767 driver, and that would make perfect sense. All of your pics and info look like they were done by a professional pilot, solid instructions along with backing explanation. Sir I'm very impressed with the work and, very jelly of your job - I fly too, but much smaller aircraft - B36 and C180 although not current.


Thanks again,
Merlin
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      12-28-2015, 06:56 PM   #25
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Quote:
Originally Posted by djDori_C View Post
Wow!
Well congrats on a new motor!
Not sure if thats a good or bad thing for the car record but oh well, thank you!
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      12-29-2015, 09:32 AM   #26
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Originally Posted by B767capt View Post
It stays at 80 psi for 12+ hours and slowly falls over a few days due to one way check valves. If I had an injector leaking I would see the pressure fall immediately. This problem has ruined many S85's in short order. It scores the cylinder wall too by washing the oil away let alone bending the connecting rod.
Hi B767capt, I followed your guide to install fuel pressure gauge 6 months ago. I tested the pressure dropped from 83 to 0 psi just within 2 hrs and I suspect some leak. So I changed all the injectors 2 weeks ago and tested again but I can't get 80 psi stay for 12+ hours. My fuel filter also changed before this new injectors. Will other part/location suspect leak other than these injectors? Any thoughts? Here's my pressure psi reading:

off - 83
1 hr - 43
2 hrs - 21
3 hrs - 13
4 hrs - 8
5 hrs - 5
5.5 hrs - 4
6 hrs - 2
6.25 hrs - 0 psi

Thanks in advance.
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      12-29-2015, 11:22 AM   #27
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Quote:
Originally Posted by ASW338 View Post
Hi B767capt, I followed your guide to install fuel pressure gauge 6 months ago. I tested the pressure dropped from 83 to 0 psi just within 2 hrs and I suspect some leak. So I changed all the injectors 2 weeks ago and tested again but I can't get 80 psi stay for 12+ hours. My fuel filter also changed before this new injectors. Will other part/location suspect leak other than these injectors? Any thoughts? Here's my pressure psi reading:

off - 83
1 hr - 43
2 hrs - 21
3 hrs - 13
4 hrs - 8
5 hrs - 5
5.5 hrs - 4
6 hrs - 2
6.25 hrs - 0 psi

Thanks in advance.
I assume you have an S85? Mine is not consistent every time I drive the car. Sometimes it will fall to 45 psi after 6 hours and other days or most of the time it will be much higher. The fuel pressure regulator in the fuel filter has a valve and the fuel pump has a one way check valve and of course the injectors are valves. When the key is at 0, the valves close to trap pressure for faster subsequent starts. I think if you had a leaky injector or one of the other valves were bad, you'd see the pressure drop immediately. I have read what the BMW spec is after 1 hour and I remember my car stays way above their published value. Can't find it right now but it might have said 1 bar. I've seen videos of stuck injectors and the line pressure would be 0 before you could get out and open the hood to view your gauge.
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      12-29-2015, 01:24 PM   #28
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Quote:
Originally Posted by B767capt View Post
I assume you have an S85? Mine is not consistent every time I drive the car. Sometimes it will fall to 45 psi after 6 hours and other days or most of the time it will be much higher. The fuel pressure regulator in the fuel filter has a valve and the fuel pump has a one way check valve and of course the injectors are valves. When the key is at 0, the valves close to trap pressure for faster subsequent starts. I think if you had a leaky injector or one of the other valves were bad, you'd see the pressure drop immediately. I have read what the BMW spec is after 1 hour and I remember my car stays way above their published value. Can't find it right now but it might have said 1 bar. I've seen videos of stuck injectors and the line pressure would be 0 before you could get out and open the hood to view your gauge.
Hi B767capt, thank you for your input. Since my reading were too far away from yours, maybe I will go with this route to order right fuel pump and retest. If I still get same reading (0 psi in 6.25 hrs.), I have no more any idea to diagnose. Thanks again!

Last edited by ASW338; 12-29-2015 at 01:40 PM..
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      03-20-2019, 05:57 AM   #29
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Hi there.

Sorry for ressurrecting this topic, but my engine had a stuck injector too, but didn't blow the engine. I'm afraid it caused some damage, I don't know how to discover.

So, thing was this:
I was at 8,000RPM and emergency mode was activated, and I ran more 300 meters, and stopped the car. I decided to shutoff the engine. I tried to start the car like 5 times, no success, only cranking, no burning. Then I towed it home.

At home, I tried to start more 6 or 7 times after cold, no success.

Towed to Indy Shop, detected one stuck injector.

Corrected the faulty injector, put the engine to run, but it still runs rough, like misfiring all cylinders.

I'm afraid there is engine damage. What do you guys think? Think it ran too much with the stuck injector? Or the time wasn't enough to make damage?
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      03-20-2019, 01:49 PM   #30
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Quote:
Originally Posted by jvictormp View Post
Hi there.

Sorry for ressurrecting this topic, but my engine had a stuck injector too, but didn't blow the engine. I'm afraid it caused some damage, I don't know how to discover.

So, thing was this:
I was at 8,000RPM and emergency mode was activated, and I ran more 300 meters, and stopped the car. I decided to shutoff the engine. I tried to start the car like 5 times, no success, only cranking, no burning. Then I towed it home.

At home, I tried to start more 6 or 7 times after cold, no success.

Towed to Indy Shop, detected one stuck injector.

Corrected the faulty injector, put the engine to run, but it still runs rough, like misfiring all cylinders.

I'm afraid there is engine damage. What do you guys think? Think it ran too much with the stuck injector? Or the time wasn't enough to make damage?
Compression test and bore scope camera down the spark plug holes to assess cylinder wall scoring. Also possible the fuel that was unburned before leaving the cylinder head torched the O2 sensors and/or cats. Mine did.
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      03-22-2019, 11:52 AM   #31
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Quote:
Originally Posted by jcolley View Post
Compression test and bore scope camera down the spark plug holes to assess cylinder wall scoring. Also possible the fuel that was unburned before leaving the cylinder head torched the O2 sensors and/or cats. Mine did.
After persevering on the injectors, they managed to get the engine to work fine again. No problems at all.

We suspect that the problem was:
The previous owner said that he never used premium gas, only regular 87 octane fuel, without cleaning aditives. I thought it would be good to start changing the fuel to 87 octane with cleaning aditive little by little.
When I went away to work, leaving the car home stopped for 2 weeks, the fuel system may have loosen dirt, which ended up going to the injector nozzle and stuck it.

So the fuel tank was drained and we put an advanced cleaner with 5L of premium gas, ran the engine, idling for some time to clean the system.

Now I'm only running 97 octane premium fuel.

Besides that, we changed the oil and filter to avoid problems with fuel contamination in the oil.
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      03-26-2019, 03:14 PM   #32
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need some insight...

I'm new to this forum and in fact I'm about 3 days new to ownership of my dream car a 2008 e92 m3 DCT fitted with a relatively recently installed vf620 supercharger. 70k miles.

What a ride its been... I picked up the car in Iowa (i live in Alabama) and i drove it to Kansas City to stay with some buddies from college. We'll about 500 miles into my trip to KC, right outside of KC (luckily) the car went into limp mode. I was under WOT and at about 6000 rpm the car just fell flat on its face, went into limp mode and shut off as soon as the clutch was engaged. long story short I got the car running, emptied what was left of sh*ty Iowa gas (the car was really too close to empty when I decided to open it up for a stretch which was a definite learning experience for me), ran some injector cleaners and got her home to Alabama putting only ethenol free 91 or 93 and keeping the tank above half full (i filled up 6 times that trip...). As soon as I got into town it went into limp mode again..only this time it was not under load it was as soon as I got off the interstate. The car sputtered on home.

The main code that faulted is P2290 "Injector Control Pressure Too Low" which lead me to believe I simply need to order and install a new Fuel Pump Control Module, esp. being that this was an issue with the 2008's.

While I'm waiting for that to come in the car is sputtering and misfiring like crazy and blowing a bunch of white smoke. Reading this thread makes me think I have perhaps a more serious fuel injector issue perhaps in conjunction with the fuel pump control module. The car also has a bit too much oil in it that I need to syphon. Is that why the white smoke?? The car is totally catless and no muffler (it's mental!!) so the smell of gas in pungent... but now I don't know what to think... the VF620 should come with upgraded injectors right??

Any input would be greatly appreciated!!!
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      03-26-2019, 03:16 PM   #33
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Quote:
Originally Posted by scaryharry19 View Post
need some insight...

I'm new to this forum and in fact I'm about 3 days new to ownership of my dream car a 2008 e92 m3 DCT fitted with a relatively recently installed vf620 supercharger. 70k miles.

What a ride its been... I picked up the car in Iowa (i live in Alabama) and i drove it to Kansas City to stay with some buddies from college. We'll about 500 miles into my trip to KC, right outside of KC (luckily) the car went into limp mode. I was under WOT and at about 6000 rpm the car just fell flat on its face, went into limp mode and shut off as soon as the clutch was engaged. long story short I got the car running, emptied what was left of sh*ty Iowa gas (the car was really too close to empty when I decided to open it up for a stretch which was a definite learning experience for me), ran some injector cleaners and got her home to Alabama putting only ethenol free 91 or 93 and keeping the tank above half full (i filled up 6 times that trip...). As soon as I got into town it went into limp mode again..only this time it was not under load it was as soon as I got off the interstate. The car sputtered on home.

The main code that faulted is P2290 "Injector Control Pressure Too Low" which lead me to believe I simply need to order and install a new Fuel Pump Control Module, esp. being that this was an issue with the 2008's.

While I'm waiting for that to come in but now the car is sputtering and misfiring like crazy and blowing a bunch of white smoke. Reading this thread makes me think I have perhaps a more serious fuel injector issue perhaps in conjunction with the fuel pump control module. The car also has a bit too much oil in it that I need to syphon. Is that why the white smoke?? The car is totally catless and no muffler (it's mental!!) so the smell of gas in pungent... but now I don't know what to think... the VF620 should come with upgraded injectors right??

Any input would be greatly appreciated!!!
Injector pressure is low because you can't pressurize something with a hole in it....i.e. a stuck open injector.

I'd wager that the sump isn't overfilled with oil...
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      03-26-2019, 03:28 PM   #34
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Quote:
Originally Posted by jcolley View Post
Injector pressure is low because you can't pressurize something with a hole in it....i.e. a stuck open injector.

I'd wager that the sump isn't overfilled with oil...
If the the control module didn't allow the fuel pumps to keep up with demand, running the car lean at high fuel demand, wouldn't that cause the same code and limp mode? That's what I first found on the forums at least... also, the car drove fine thereafter for a day in KC driving around conservatively.. It makes me think the 2 injector cleaners I ran during the trip home have loosened up sediment in the tank which is now causing the misfiring but it didn't make it's way through until I finally made it home.

What would be the best way to tell the difference?
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      03-26-2019, 08:56 PM   #35
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remove all spark plugs, check for signs of leaking injector= black, maybe wet plug...
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      03-28-2019, 05:12 PM   #36
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Little over a year ago right before I sold my M3 I had the same problem happen to me. I had two injectors get stuck wide open. Luckily there wasn't any damage to the motor and was able to sell it before anything else happened (i.e. rod bearings).

Click the IG link below to see the video. The video is my old M3. It shows the injectors getting stuck and dumping fuel into the motor.

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      03-28-2019, 05:28 PM   #37
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Quote:
Originally Posted by Eazy-E90 View Post
Little over a year ago right before I sold my M3 I had the same problem happen to me. I had two injectors get stuck wide open. Luckily there wasn't any damage to the motor and was able to sell it before anything else happened (i.e. rod bearings).

Click the IG link below to see the video. The video is my old M3. It shows the injectors getting stuck and dumping fuel into the motor.

And I'm sure you disclosed this to the new owner... right?
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      03-28-2019, 05:39 PM   #38
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And I'm sure you disclosed this to the new owner... right?
Traded it in. I could give you the VIN and you could track down the new owner to tell him/her if you like?

Had the car for over 5 years with 90,XXX miles with no problems until that happen.
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      03-28-2019, 05:46 PM   #39
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Well... boy do I feel like I’ve got a whole in my heart.

So today I got the new (used) fuel pump control module in. It was off a used 2010 m3. I installed it and started the car and wow did it feel better. Idle was back up to around 900 (was at 500-600) and the car didn’t smell of any unburnt fuel like before. I warmed it up and drove a little ways and could tell an immediate and vast difference in the smoothness of acceleration and throttle control...and after about 2 miles....LIMP MODE AGAIN. The car was running beautifully after replacing that fuel pump module, that was definitely an issue... but now what? I putted on over to the local BMW specialist and hope to know something tomorrow.. I have Bosch’s Green Giant fuel injectors. I had no engine misfire codes. Regardless I asked the mechanic to check that first. He doesn’t think it’s fuel injectors but I told Home in need peace of mind regardless...
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      03-28-2019, 05:58 PM   #40
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The rob bearings were replaced a little over 10k miles ago though. So long as I change the oil to get any fuel that may be in there, out, i’d Think I’m fine on that front.
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      03-28-2019, 06:13 PM   #41
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Quote:
Originally Posted by Eazy-E90 View Post
Quote:
Originally Posted by SAMM3Y View Post
And I'm sure you disclosed this to the new owner... right?
Traded it in. I could give you the VIN and you could track down the new owner to tell him/her if you like?

Had the car for over 5 years with 90,XXX miles with no problems until that happen.
Track him down?!? Who do you think I am, Ed Bolian? I was just teasing you bud, but understand what you said made you sound like a bit of a dik.
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      04-02-2019, 06:38 PM   #42
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Quote:
Originally Posted by scaryharry19 View Post
Well... boy do I feel like I’ve got a whole in my heart.

So today I got the new (used) fuel pump control module in. It was off a used 2010 m3. I installed it and started the car and wow did it feel better. Idle was back up to around 900 (was at 500-600) and the car didn’t smell of any unburnt fuel like before. I warmed it up and drove a little ways and could tell an immediate and vast difference in the smoothness of acceleration and throttle control...and after about 2 miles....LIMP MODE AGAIN. The car was running beautifully after replacing that fuel pump module, that was definitely an issue... but now what? I putted on over to the local BMW specialist and hope to know something tomorrow.. I have Bosch’s Green Giant fuel injectors. I had no engine misfire codes. Regardless I asked the mechanic to check that first. He doesn’t think it’s fuel injectors but I told Home in need peace of mind regardless...
So, did you find out the problem??
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      04-04-2019, 11:13 AM   #43
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Low fuel pressure switch?
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      04-06-2019, 11:29 AM   #44
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So, did you find out the problem??
Well when I got the car to the mechanic I did have a misfire code this time. He checked compression and found I was 30psi down on I believe he said cylinder 2... so he will be performing a leak down test. I don't know what could have happened. the car is DCT so I don't see how I could have bent a valve. unless some metal broke off in the supercharger?? I'm just praying the cylinder and cylinder walls look ok. So all I know now is I definitely did have 2 issues and #2 could be very bad.
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