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4 votes
Accepted

Why do worn diesels emit black smoke?

Why does this happen? It happens when there's too rich of an air/fuel mixture. You usually see it happen during hard acceleration, when the engine is trying to produce more power so it can speed up. ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
3 votes

Should I stop the engine, on a daily short trip?

Should I stop the car during that 5 minutes stay at the kindergarten? I leave it running, just to get the oil / coolant temp high. Idling isn't a great way to warm the engine up - since there's no ...
motosubatsu's user avatar
  • 10.1k
2 votes

Why do worn diesels emit black smoke?

Many diesel cars and trucks have the issue that the turbo "clogs" up with particles when under low load ie coping with city traffic. Once they can accelerate the turbo spins up and cleans itself ...
Solar Mike's user avatar
  • 34.6k
2 votes

Is a diesel suitable for low mileage but with long hauls and hills?

Based on your total mileage and described usage pattern no a diesel (particularly one with a DPF) would be unsuitable. They are less efficient on shorter runs and in stop-start traffic and the DPF ...
motosubatsu's user avatar
  • 10.1k
2 votes

Is a diesel suitable for low mileage but with long hauls and hills?

It depends on the nature of the journeys as well as the length. DPFs don't like running cold (they soot up), so if you're only doing short journeys (<10 miles, or lots of stop-start), you need to ...
Nick C's user avatar
  • 28.8k
2 votes

Are fuel additives effective for DPF de-clogging

I don't believe they can effectively clean that far down the line. Either take the car on the motorway for 10miles or so, keep the revs and speed up. Or you could remove the DPF which could possibly ...
DamoC's user avatar
  • 421
2 votes

When to repalce the Oil Filter on my Hyundai Accent 2006

It is recommended to also change the oil filter when changing the oil in any car. The diesel filter is also recommended, depending on the quality of fuel you use, it might be ok or clogging up already ...
mBardos's user avatar
  • 131
2 votes

What is the purpose of DEF in VW?

The software in certain VW models was able to detect when the vehicle was being tested. It looked at inputs from the steering wheel, tire pressure etc. When in non test mode the software allowed the ...
mikes's user avatar
  • 19.9k
2 votes

Nissan Quashqai acceleration problem

The symptoms you describe would be consistent with the engine not receiving any boost from the turbocharger. At idle, the turbocharger isn't providing any boost so the car will behave normally, ...
Steve Matthews's user avatar
1 vote
Accepted

Peugeot partner 2011 diesel: p filter add level low

Yes, make sure blue and eolys are full. Yes, run engine at maximum rpm on an open highway, 80-130 kph, five times. In addition, add Star Tron Diesel Additive. It can be found here and elsewhere. ...
Carguy's user avatar
  • 1,967
1 vote
Accepted

Link between malfunctioning throttle plate and particulate filter

I don't think there's a plausible link between a malfunctioning throttle plate and the clogged DPF because no matter what the throttle plate is doing, the MAF is still continuously measuring the air ...
MTA's user avatar
  • 6,405
1 vote

Chip can affect DPF?

The problem is the "chip" - I'm 90% certain of it. You described it in a comment as: It is a box next to the motor. The car has a power 140 PS and now it is 170 PS. The overwhelming majority of ...
motosubatsu's user avatar
  • 10.1k
1 vote

Should I stop the engine, on a daily short trip?

As an longtime owner of a DPF diesel I have the following thoughts about your question: Both DPF and engine don't like cold idling (wear on the engine due to cold oil, acidic combustion byproducts ...
Martin's user avatar
  • 8,458
1 vote

Should I stop the engine, on a daily short trip?

The real issue is that short trips will not allow a full DPF cycle, and your car will continue to attempt to run a cycle until it is able to complete a cycle. This may result in poorer fuel economy. ...
mongo's user avatar
  • 2,115

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