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Author Topic: 2011 40d starting issue-First problem  (Read 593 times)

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November 02, 2017, 06:23:53 PM

marsie

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2011 40d starting issue-First problem
« on: November 02, 2017, 06:23:53 PM »
Hi, after a brief honeymoon period with my new x5 (bought on saturday ::)) i have my first problem.
 Started the car from cold this morning and it fired straight up (sounded fine) ran for a couple of seconds and stopped, started again and did the same. then started blipped the throttle and it kept running but was lumpy. This cleared after about 25-30 seconds and it ran fine after that. Tonight another cold start and it did the same (albeit only once).
All seems well when it get a bit of heat in it but doesnt seem to like cold starts

Has anyone had a similar problem that can shed any light on it?
Thanks in advance
Paul
2011 X5 40d M sport
2016 Mini Cooper JCW 5 door
2008 Toyota Hilux invincible work donkey

November 02, 2017, 08:15:50 PM
Reply #1

X5Sport

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Re: 2011 40d starting issue-First problem
« Reply #1 on: November 02, 2017, 08:15:50 PM »
Glowplugs would be first thought but I didn’t think it was really cold enough for that issue yet.
:type:

November 02, 2017, 08:58:12 PM
Reply #2

marsie

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Re: 2011 40d starting issue-First problem
« Reply #2 on: November 02, 2017, 08:58:12 PM »
Thats what i thought. It starts and appears to be running fine then cuts out after a second or two?? If it was glow plugs i would expect a misfire from the off. Its as though a sensor is shutting the engine down but no warning lights bongs or anything else, its just as though the stop button is pressed
When it does continue running thats when it seems to misfire for a while until it settles into a steady idle
2011 X5 40d M sport
2016 Mini Cooper JCW 5 door
2008 Toyota Hilux invincible work donkey

November 02, 2017, 09:03:53 PM
Reply #3

snrbrtsn

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Re: 2011 40d starting issue-First problem
« Reply #3 on: November 02, 2017, 09:03:53 PM »
Possibly gummed up inlet manifold

November 05, 2017, 06:07:32 PM
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marsie

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Re: 2011 40d starting issue-First problem
« Reply #4 on: November 05, 2017, 06:07:32 PM »
Hmm, thanks guys. Going to start with the basics and change all the filters and see what happens then. Read the fault codes yesterday and the only fault was a lin bus error?
2011 X5 40d M sport
2016 Mini Cooper JCW 5 door
2008 Toyota Hilux invincible work donkey

December 01, 2017, 11:30:36 PM
Reply #5

Rainman999

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Re: 2011 40d starting issue-First problem
« Reply #5 on: December 01, 2017, 11:30:36 PM »
Hi,  my 2010 40d started doing this from cold. It stated up right away then got lumpy until the car revs built up. So waiting to pull off the drive=lumpy then 4/5 minutes down the road all ok. Went to Beverley motor works, they could see a possible issue with the fuel injectors on further investigation it turned out to be the inlet manifold all gummed up with carbon. They carried out a "extensive decoke" on Inlet manifold with walnut blasting.
Fantastic now starts and runs a treat...i have noticed the engine is breathing much better now and the "economy guage" is much more lively now. Well worth the work and i had the swirl flaps removed at the same time.

December 02, 2017, 08:38:08 AM
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Alan Gunn

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Re: 2011 40d starting issue-First problem
« Reply #6 on: December 02, 2017, 08:38:08 AM »
Did the op get it sorted out ??.
Sean hit the nail on the head by the sound of it.

December 16, 2017, 06:48:37 PM
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snrbrtsn

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Re: 2011 40d starting issue-First problem
« Reply #7 on: December 16, 2017, 06:48:37 PM »
Did the op get it sorted out ??.
Sean hit the nail on the head by the sound of it.


Had the same on my F07, pulled manifold & Egr, they were in a terrible state, no fault codes with this!

December 17, 2017, 10:32:42 PM
Reply #8

marsie

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Re: 2011 40d starting issue-First problem
« Reply #8 on: December 17, 2017, 10:32:42 PM »
Not sorted mine yet but have noticed that i don't always get the glow plug light on cold starts (even at -4 last week)??
 When the glow plug light does come on it starts and runs smoother but still not perfect. Like i said in my post it only lasts a few seconds and few blips of the throttle sorts it. Am considering changing the glow plugs and relay but to do that the inlet needs to come off so maybe an opportunity to give it a clean out and remove swirl flaps?

Also last week had the engine light come on and it was EGR related so hopefully the previous advice on here may be correct.

Is there anyway to blank the EGRs on these engines. Was a common fault on land rovers and EGR blanking is a common fix

Thanks Guys
2011 X5 40d M sport
2016 Mini Cooper JCW 5 door
2008 Toyota Hilux invincible work donkey

December 18, 2017, 07:49:48 AM
Reply #9

snrbrtsn

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Re: 2011 40d starting issue-First problem
« Reply #9 on: December 18, 2017, 07:49:48 AM »
There is Egr kits available, however your pushing the problem further down the line, you’ll initially get smoking issues, then turbo failure followed by Dpf failure so any fix will be short term gain, beside the annual test should inspect for modification to the emmission system including Egr, unfortunately....
Also To remove the EGr requires software modification by way of engine remap

I’ve lost the pictures of my efforts on previous car, however all was relatively straight forward and carried out in an afternoon on the drive, whilst awkward and daunting, I found both plugged though easily cleaned, the swirl flaps & actuator was stuck closed, the pipework from Egr to inlet manifold was heavily gummed, I used a combination of petrol, brake cleaner and a pressure washer to clean out the residue,

The issue seems to be exasperated by crankcase ventilation having oil mist which picks up the soot and forms a sticky gum, this inturn is baked into a hard carbon and deposits in the pipes.

My F07, (5 series GT) would have the same traits, start and run fine one day then powerless the next almost as if it’s choking itself (starved of air) the day came when I got to the bottom of road and stalled, powerless to move,
I took the drastic action and pulled things apart.

The same issue was common on the 4.0d a while back, BMW will replace the manifold and offer no attempt to clean.

December 18, 2017, 11:51:40 PM
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marsie

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Re: 2011 40d starting issue-First problem
« Reply #10 on: December 18, 2017, 11:51:40 PM »
Mine has never felt low on power. Its just the first few seconds after cold starts. Will definitely clean out the inlet manifold but i am convinced i have a glow plug issue as well.
This morning was 1 degree but got no glow plug light, started then cut out after a few seconds. Started again and did the same again, third time got the glow plug light and it started and ran ok

Am thinking of swapping the 6 plugs and the relay
Paul
2011 X5 40d M sport
2016 Mini Cooper JCW 5 door
2008 Toyota Hilux invincible work donkey

December 19, 2017, 06:41:58 AM
Reply #11

snrbrtsn

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Re: 2011 40d starting issue-First problem
« Reply #11 on: December 19, 2017, 06:41:58 AM »
I would have a fault code scan carried out before replacing things
As like I have done you’d be assuming and possibly replacing unnecessary parts
With the greatest of respect, please understand my remote diagnostics is possibly holistic.
Both options are possible, scanning the fault codes is the sure way of identifying, however, a gummed up manifold doesn’t always present a code, mine was swirl flap actuator plausible where as glow plugs should have a destinct code

Good luck & success with repairs