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      06-17-2013, 12:01 PM   #1
RichyB
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BAD BAD misfire creamy petrol mix spitting/pouring out exhausts

Hello you might remember my cold start misfires from a while ago well basically I thought car was fixed, It had a new injector cyl 1 new HPFP 6x new spark plugs car ran fine for couple hundred miles then went into reduced power on cold start, I left it over a week went on hol come back it started ok lots of smoke but that soon went! anyway took it to BM specialist he read old codes cleared them then went for drive no probs at all he read codes after, 02 after CAT sensor code!! OK so I had the sensor changed by them original BMW sensor picked up car, reduced power again turned off back on again all ok they read codes fuel pressure code cleared that I went off home. next cold start reduced power AGAIN anyway managed to get it back to BM specialist read codes combustion misfire, 02 sensor code gone! so they said 2 ignition coils need replacing better off doing all 6 that was FRI. Fast forward to today I replaced the coils myself with Bosch ones from euro car parts started car reduced power mode straight away stinks of fuel with like a creamy coloured fuel mix pouring and spitting out of exhaust tried turning off and on a few times no good then I left it for hour and a half tried again same story reduced power mode creamy fuel mix pissing out of exhausts... I really hope someone can help because this car is a bag of shit and I am falling out of love with BMWs and wont be buying another 1

Last thing my car has full BMW service and a couple of specialist services stamps surely this car should not be messing up like this is there any one at BMW who I can talk to or send a letter to because this should not happen on a car like this I thought german made blah blah and all that!!! should of kept my e36 328i 196k on it not 1 prob apart from water pump
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      06-17-2013, 12:46 PM   #2
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Take it to Darren Wood mate.
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      06-17-2013, 03:48 PM   #3
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That sounds really bad mate.

I think your problem is the Indy doesn't seem to have clue what he is doing and you have a simple undiagnosed problem which has got worse and worse and possibly led to major issues. Just reading codes and fitting new parts is not the way to fix a sick engine. All these codes being 'reset' they need looking into not just resetting!

Having a regular services doesn't prevent the odd fault. These are complex engines and faults can lead to major problems if left. Unfortunately you buy the car cheap now, but the repair / diagnosis costs are still that of a 40k+ car!

If it is fuel right the way at the tail pipes you're in some deep shit, apart from 4 wrecked CATs.

Creamy colour seems to indicate water/oil emulsion.

Open your oil filler cap, what's the colour in there? Are you losing water?

Worst case could be a headgasket leaking oil and water into a bore causing misfires. Or just oil which is mixing with cold start condensation to make emulsion.

Could be a leaky injector causing flooding and bore wash / ring failure...

Any half decent garage should be checking all these and taking your plugs out for a start.
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Last edited by doughboy; 06-17-2013 at 03:59 PM.
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      06-18-2013, 02:00 AM   #4
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Ok thanks For replays I'm miles from Manchester plus car wont even run properly. The whole creamy petrol out of exhaust has only done it since yesterday when I put brand new ignition coils in worse thing is I let it run for a few mins hoping it would go away it would until I revved engine I stopped and started engine about 4-5 times so knowing my luck I have fucked the cats!! The codes the Indy cleared from car were old codes from previous work,
I was going to get home today try car if still bad I was going to put my old coils back in what does anyone think?????
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      06-18-2013, 02:11 AM   #5
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TO me it sounds like a blown head gasket. The crap out the pipe, hows it smell? Sweet at all? Bunch of, or some white smoke?

Seriously though don't drive it anymore and don't throw anymore parts $$$ at it.

Head gaskets can fail, especially if the boost has been fiddled with, etc. Not often but the symptoms you describe sound a lot like a head gasket. It's not a death sentence if it is, I've blown them before and it's a PITA, but so long as you get it handled there's no certainty of damage beyond the head gasket. Just messy.
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      06-18-2013, 02:40 AM   #6
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OP,

Don't run it I would say.

Like I said have you checked for emulsion in your oil filler cap and your coolant level?

Changing coil packs / injectors and even spark plugs needs the relevant DME adaptations rest via the OBD port, unless you can do it yourself stop changing parts!

I think it needs towing to a decent garage.
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      06-18-2013, 03:07 AM   #7
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It's like light brown creamy colour that stinks of petrol it's stained the floor like an oil stain. The only reason I changed the coils was because I thought it was straight forward unplug plug back in obviously not!!! I have not checked the cap yet I'm at work the Indy just told me to take the coils out?? See what happens could the head gasket really be gone its not been driven since fri and only just started doing it yesterday after I put new coils in
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      06-18-2013, 03:28 AM   #8
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I have just been talking to a friend he suggested maybe the codes in the odb from the misfires fri/sat could still be in there so when I have put new coils in old codes making the car still misfire?????
When I talk about the misfires fri/sat the car has not been driven at all it won't get out of reduced power mode I just tried starting it a few times I know I'm clutching at straws here
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      06-18-2013, 07:41 AM   #9
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The historic misfiring codes won't have anything to do with the new coilpacks. I had misfires due to coilpacks...changed coilpacks and misfires goes.

Historic codes still present but this does not affect anything. ( eg the computer still "thinks" that there are misfiring codes stored etc....no, it doesn't work that way).
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      06-18-2013, 08:00 AM   #10
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Take a picture of the oil cap as it sounds like it could be head gasket related.

Don't throw more money at it until you can get it to a specialist who knows their stuff. It could be cheaper in the long run getting it to somewhere who knows the N54 engines very well and can get it sorted once and for all....

A real shame to see you losing faith with your new car!
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      06-18-2013, 08:08 AM   #11
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Not sure on your exact location but Gloucester BMW Specialists (01452 300150) have a good reputation.

Simpson Motorsport know their stuff and might be worth a call.

Might be worth just giving them a call to pick their brains....
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      06-18-2013, 08:52 AM   #12
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Quote:
Originally Posted by zltm089 View Post
The historic misfiring codes won't have anything to do with the new coilpacks. I had misfires due to coilpacks...changed coilpacks and misfires goes.

Historic codes still present but this does not affect anything. ( eg the computer still "thinks" that there are misfiring codes stored etc....no, it doesn't work that way).
I'm sure this is correct but I did have that exact experience. I got bad missfires and limp mode, had all coils and plugs changed, limp mode returned in <50 miles and persisted. Makkan from this forum checked the codes for me and they had not been reset at all. Reset and all has been good for 15k miles.

I'm not saying your wrong and it might just have been a coincidence. Just saying that this happened to me and I'm sure Sam will also remember it (and the rather spirited drive to try and replicate the problem after clearing the codes).
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      06-18-2013, 11:38 AM   #13
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Blocked breathers, head-gasket or cracked cylinder head.
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      06-18-2013, 01:13 PM   #14
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Hello all many many thanks for your help and advice the car is killing me not being able to drive it, Im hoping my CATs are ok thats the main worry!! I have been outside checked oil cap no gunk no nothing very clean as it always has been.My mechanic friend came around with his basic code reader he read the codes and deleted them and we tried starting it up no good just as bad petrol pissing out exhaust immediate reduced power mode. Ill put a list of the codes below I have looked them up on here and its the usual misfires multiple misfires I did get a couple of fuel pump codes but it has had a new BMW fuel pump I think its a HPFP on the invoice its called a Rmfd pump??? also I had a coil code which is funny because I installed 6 new 1s yesterday.... any way Im taking GREG330s advice I spoke to Anthony at Simpson Motorsport very very helpful and he has a e92 335i : ) they said not good as did everyone else but they think couple of hours should have idea of problem. Im also taking DOUGHBOYs advice when he mentioned the car needs someone to really look into the car rather than read the diagnostics and stick new parts on, I have been dealing with my local Indy who is very good but just reading codes and fitting new parts is not the way to go in this case as you can see from my initial thread...on the plus side the 02 sensor I did need because code has gone and the new ignition coils are not a waste cause its prob not had any for 60-70k. : )

My guess is though looking back I had probs with cyl 1,2,3 misfires from day 1, new injector cyl 1 no probs since I think cyl 2,3 are the problem not injector as such cause I was getting combustion codes not injection codes but its funny how last diagnostic at Indy garage just stated cyl 2,3 combustion codes no other cylinders!!!! I replace all 6 coils Bosch and this really bad misfire happens

But again thanks for EVERYONES help much appreciated hope next thread will be a fix ill let you know what it is ; )

2AAF 2FBF 29CD 29CE 29CC 29F1 29CF 29D9 2F6C
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      06-18-2013, 01:53 PM   #15
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Glad to hear it Richy, I've heard a lot of good things about Simpson and it's certainly worth letting them spend some time with the car!

Good luck and keep us posted....
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      06-18-2013, 02:13 PM   #16
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If there's any pennies left might get them to quicken it up a bit lol
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      06-18-2013, 04:06 PM   #17
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Quote:
Originally Posted by nicktyler View Post
I'm sure this is correct but I did have that exact experience. I got bad missfires and limp mode, had all coils and plugs changed, limp mode returned in <50 miles and persisted. Makkan from this forum checked the codes for me and they had not been reset at all. Reset and all has been good for 15k miles.

I'm not saying your wrong and it might just have been a coincidence. Just saying that this happened to me and I'm sure Sam will also remember it (and the rather spirited drive to try and replicate the problem after clearing the codes).
Hmm interesting. I also read that when you change plugs and coils, there is some adaptation stuff that needs doing.

Got my plugs and coils changed. No adaptation was done on my car.

Would be good to hear opinions of others on this.
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      06-20-2013, 03:07 AM   #18
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Quote:
Originally Posted by zltm089 View Post
Hmm interesting. I also read that when you change plugs and coils, there is some adaptation stuff that needs doing.

Got my plugs and coils changed. No adaptation was done on my car.

Would be good to hear opinions of others on this.
I would expect that the ECU has sensible defaults that work with any new coil/plug if you reset the adaptations, then over time it learns the characteristics of the particular coil and plug combo and adapts the voltage and duration it applies it for in order to generate the spark it needs. These ECUs aren't like the first generation, where they adapt for a short time after a reset then that's it - they continually recalculate and adjust to suit the conditions.

If the original coil/plug was failing and the ECU had adapted to try and work around the problem by applying more voltage for longer, I can imagine that might not work properly with new coils/plugs and it'll take it a while to work out what's going on and trim back. However, if the car was running fine before, the difference in adaptations between the old and new coils/plugs should be minimal, so it'll fairly quickly get back on track with where it should be.

Sorry, a bit vague, but the summary is that I don't think you should worry if the car is running fine and not throwing fault codes.
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      06-21-2013, 11:55 AM   #19
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Just to keep everyone posted in the end it was injector 2 stuck open hope the cat is not fooked ill prob run a can of cat cleaner through when I get it back mon I did enquire about a re map a bit dear for now but apparently quicker straight line than 1 of there m3 superchargers!!!! Simpson Motorsport they are called really good place Id recommend them thanks again
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      06-21-2013, 02:34 PM   #20
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I wouldn't worry about the Cats..

If they're fooked - get catless dp's!
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      06-21-2013, 03:27 PM   #21
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Nice one Richy glad they sorted it!!

How much did they quote for a remap?
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      06-22-2013, 08:25 AM   #22
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What about MOT without cats would it still pass??? The re map is 550 plus vat I could prob get it a bit cheaper but it sounds real good they said a Norwegian company completely re writes the software for the car they take a copy of current software and go from there takes a coupke of days taking it to 390 bhp and taking the torque up to 500 odd from 400 odd lol I don't fully understand the formulas!!! And you can still use regular unleaded. The set up there Greg is very good I think simpson Motorsport is a big name in racing they go all over the place. I phoned today and said I'd rather replace injector 3 as well as 2 I'd don't want a repeat prob in a couple of months what do you think???
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