Help, BMW520D not starting
Help, BMW520D not starting
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Discussion

Neil520D

Original Poster:

3 posts

95 months

Sunday 2nd December 2018
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Hi, newbie here, really need some advice, been searching all over the net to try to figure out what to try next, but not getting far.

So I have a 520D (2007) it has 165000 on the clock, with a reconditioned engine fitted about 40 000 miles ago, by previous owner.

Been having issues with it being down on power, and black smoke on acceleration, and occasional blue smoke when starting cold. And been noticing a bad smell from time to time like a burning clutch type smell.

About a month ago i had been motorway driving for about two hours, came to a roundabout gave it some welly out of the roundabout in 3rd gear to look in the mirror and see the usual black smoke, changed up to 4th gear and the car shut down completely, rolled to side of motorway, tried to start, nothing, tried to crank but wouldn't. So called recovery and had towed home.

After leaving it on driveway for a few weeks not really knowing what to do i tried starting it, now I get slow cranking and it tries to fire, but will not start. I have plugged in my OBDII readeer which gives me P14A6 (DPF low resistence) nothing else, dash warning shows a car up on ramps, suggesting take to garage.

Anybody had similar or any pointers on where to start, as I am currently off work with a bad back, meaning I have plenty of time, but very little money. Any advice greatly appreciated

Mignon

1,018 posts

120 months

Sunday 2nd December 2018
quotequote all
Fuel filter.

Neil520D

Original Poster:

3 posts

95 months

Sunday 2nd December 2018
quotequote all
worth a try, but that wouldn't explain the slow cranking or the burning smell?

Jaybmw

325 posts

112 months

Sunday 2nd December 2018
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Dpf full to the gills I'd imagine and not regenerating, how we're your thermostats? Car running cold it won't regen and been a e60 it's hard to tell the temp. It's why I replaced my stats both of them and pulled the dpf all mapped out. Also egr is a for caking up which needs a good clean

Neil520D

Original Poster:

3 posts

95 months

Sunday 2nd December 2018
quotequote all
had the dpf cleaned out in Poland in August, I dont think i hear the fuel pump prime when i start the engine, there is lots for me to check, but when it went on me i was certain it was a failed engine, purely because of the smell, hence why I havent really tried too much, as I can't afford a replacement.
If i can get her to start then I am happy to change fuel filter, clean egr etc etc,

Elliot2000

786 posts

207 months

Monday 3rd December 2018
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It sounds very much like a blocked dpf tbh. If u remove the o2 sensor and leave it out and try starting it- if it starts u know it’s definitely blocked up and if u have it cleaned before then there is a reason it’s blocking up so quickly and u need to find the cause rather than just getting it cleaned again