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Diagnostický případ
Jen diagnostikované vozidlo
BMW X3 - dummy DPF filter
03.10.2017
3390x
Informace o vozidle
| VIN: | WBAPD11030WH65885 |
| Výrobce: | BMW |
| Model: | X3 |
| Rok výroby: | 2007 |
| Kód motoru: | 2,0 D |
| Typ motoru: | 20 4D 4 |
| Výkon (kW): | 110 kW |
| Převodovka: | Manuální |
| Palivo: | Diesel |
| Najeto: | 122 463 km |
Jak se závada projevuje
Jiné. The engine stalls unexpectedly at different engine modes. Can be restarted and is driveable.
Jak často se závada projevuje
-
Sporadicky / za specifických podmínek.
- Za jiných podmínek. Cannot determine a specific engine mode or temperature. Randomly anytime.
V jakém systému se závada vyskytuje
- Motoru.
Doposud provedeno bez úspěchu
About 2000 km ago the the DPF filter was replaced by an aftermarket unit. Since replacement the vehicle has power and was running OK. Today after 2000 km the exhaust is black from soot despite that it was clean at the beginning after replacement. A week ago the engine started to stall and a DTC related to a DPF filter problem sets into memory.Závěr
VOZIDLO JSEM NEOPRAVOVALThe owner is spending money on a used vehicle that was supposed to be OK.
The vehicle repair is not finished as there may be an engine problem. We will continue in engine diagnosis.
What we already know is that the DPF filter is misbuilt. Is this just a random problem of one DPF filter or do other DPF filters of the same supplier have similar issues?
Is it wortwhile to buy a used diesel engine vehicle with a DPF filter today?
Obrázky, fotografie a soubory
After 2 000 km with aftermarket DPF filter (7748/1)
Left image after 120 000 km with original OEM filter.Right image after 122 000 km with aftermarket filter.
The exhaust tailpipe after 2 000 km is black from soot and a DTC related to DPF problem sets into memory.
Regeneration every 15 kms (7748/2)
This aftermarket spare part behaves differently than the original. The filter produces much higher resistance to the exhaust gases compared with the original filter. The engine ECU evaluates this as low DPF filter efficiency because the exhaust backpressure after regeneration is almost the same as before regeneration around 9 to 12 mbar (depending on temperature). At 1 500 rpm the backpressure is around 30 mbar, at 3 000 rpm = 60 mbar and after warmup it reaches 99 mbar. While driving with active regeneration the value reaches 530 mbar and the engine jerks.The filter is unusable.
Reason for black tailpipe (7748/3)
..the gap of the seal at the top - build defect.Otherwise the cells after 2 000 km seem to be OK without any signs of leaking.
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