DPF amazing difference
Discussion
I'm pretty amazed at this technology - I've got a totally clean exhaust whereas my friend in a petrol 330i same age is black with soot.
Anyway Ive just watched some truck racing and the 2010 season had DPFs as such even in race conditions there is no black smoke at all. Then I checked what it was like pre DPF ... My god how the drivers could see anything through the exhaust black smoke is beyond me.
What an exceptional addition to diesel cars which has clearly removed huge amounts of filth from going into the atmosphere instead being stored instead.
Question I have is what is the life of a DPF?
On my car it's original - 4years old and nearly 80k miles plus idrive stating a further 70k miles to go. I wonder what it will cost but if it's a service item once every 150k miles min it's hardly a deal breaker.
I did hear on the early examples of VAG DPF they had issues possibly dye to the owners buying a diesel to drive 2 miles a day...
Anyway Ive just watched some truck racing and the 2010 season had DPFs as such even in race conditions there is no black smoke at all. Then I checked what it was like pre DPF ... My god how the drivers could see anything through the exhaust black smoke is beyond me.
What an exceptional addition to diesel cars which has clearly removed huge amounts of filth from going into the atmosphere instead being stored instead.
Question I have is what is the life of a DPF?
On my car it's original - 4years old and nearly 80k miles plus idrive stating a further 70k miles to go. I wonder what it will cost but if it's a service item once every 150k miles min it's hardly a deal breaker.
I did hear on the early examples of VAG DPF they had issues possibly dye to the owners buying a diesel to drive 2 miles a day...
You wait untill the DPF re-generates. You will see soot for sure 
I think peugout and citoren change them at 60.000 on a service schedule at a pricely cost to the customer.
Personally I deal with a lot of DPF systems and they are generaly unrealiable. It is a bit of a con to get the VED down
I think peugout and citoren change them at 60.000 on a service schedule at a pricely cost to the customer.
Personally I deal with a lot of DPF systems and they are generaly unrealiable. It is a bit of a con to get the VED down
MondeoMan1981 said:
DPFs are ok on cars being used properly. Most of the bad press are those using DPF-equipped cars on short trips constantly and dealers ripping the arse out of the price of the DPF service.
define "used properly"?shorter journeys (say less than 15 miles) and not giving it the beans can also cause dpf issues.
Short journeys and you can have problems as little as 80k.
The accumulated soot is collected and burn't at high temperatures to form a very fine ash. Once the DPF is full of ash it needs replacing and could cost in the region of £600-£1,500 depending on location and vehicle; most of it labour due to location.
They are useful at reducing particulate but people who do short journeys or drive inefficiently dramatically increase the amount of soot produced. Mine is an auto and a major DPF regen occurs every 2-3k. In sport mode the revs sit around 2k and the engine is working at very light loads, a lot cooler and soot production dramatically increases and DPF regens occur every 500 miles!
If it is a diesel, give is plenty of load, lower revs, work it, get the temps up. Less soot.
The accumulated soot is collected and burn't at high temperatures to form a very fine ash. Once the DPF is full of ash it needs replacing and could cost in the region of £600-£1,500 depending on location and vehicle; most of it labour due to location.
They are useful at reducing particulate but people who do short journeys or drive inefficiently dramatically increase the amount of soot produced. Mine is an auto and a major DPF regen occurs every 2-3k. In sport mode the revs sit around 2k and the engine is working at very light loads, a lot cooler and soot production dramatically increases and DPF regens occur every 500 miles!
If it is a diesel, give is plenty of load, lower revs, work it, get the temps up. Less soot.
I didn't understand regeneration so I googled it...
This is quite a good explanation from the AA.
http://www.theaa.com/motoring_advice/fuels-and-env...
This is quite a good explanation from the AA.
http://www.theaa.com/motoring_advice/fuels-and-env...
All the 307 hdi`s I came across with dpf faults (with the tank,not the bladder) used to suffer from the ecu sensing empty dpf additive.
I never once saw a car with this fault logged that had less than half or two thirds left in the tank.
It makes you wonder how much the dealers overcharge for quantity supplied for this stuff.
I used to give £80 for five litres from Peugeot,
I don`t know what they charge for it but I`d bet that it was "completely empty sir,we needed a whole gallon to fill it"
I have always managed to fill/top up two out of one can.
Also their `special kit` was actually a net covered plastic bottle with a tap on the lid,3 ft of pipe and a quick release connector.
The bottle is filled then hung off your n/s door with a wire hook through the net and the tap is opened,high tech stuff.
I made a pump as the gravity method was feckin slow.
They also smell dreadful while regenerating,the fumes given off during this is probably more harmful than diesel fumes in the first place.
Systems which inject extra fuel to regenerate them have been known to cause the dreaded runaway diesel by diluting and overfilling the engine oil with obvious results.
Although this is usually when they are saturated beyond repair,so the ecu keeps dumping fuel in.
Another crap system with which costs and durability issues far out weigh the benefit of it`s application.
The whole beauty of diesel engines used to be in their simplicity,you give it air and fuel and it will run until it runs out of one or the other.
These days it takes 3,000,000,ghz of processors and more pipes,flaps,valves and sensors than a space shuttle just to get the f
kers to start.
Sure they are cleaner and more powerful than ever,with petrol engines getting nearer in terms of efficiency and definitely more reliable there is no point having one in my opinion,
the first real breakdown will erase any savings you might have made on fuel.
I never once saw a car with this fault logged that had less than half or two thirds left in the tank.
It makes you wonder how much the dealers overcharge for quantity supplied for this stuff.
I used to give £80 for five litres from Peugeot,
I don`t know what they charge for it but I`d bet that it was "completely empty sir,we needed a whole gallon to fill it"
I have always managed to fill/top up two out of one can.
Also their `special kit` was actually a net covered plastic bottle with a tap on the lid,3 ft of pipe and a quick release connector.
The bottle is filled then hung off your n/s door with a wire hook through the net and the tap is opened,high tech stuff.
I made a pump as the gravity method was feckin slow.
They also smell dreadful while regenerating,the fumes given off during this is probably more harmful than diesel fumes in the first place.
Systems which inject extra fuel to regenerate them have been known to cause the dreaded runaway diesel by diluting and overfilling the engine oil with obvious results.
Although this is usually when they are saturated beyond repair,so the ecu keeps dumping fuel in.
Another crap system with which costs and durability issues far out weigh the benefit of it`s application.
The whole beauty of diesel engines used to be in their simplicity,you give it air and fuel and it will run until it runs out of one or the other.
These days it takes 3,000,000,ghz of processors and more pipes,flaps,valves and sensors than a space shuttle just to get the f
kers to start.Sure they are cleaner and more powerful than ever,with petrol engines getting nearer in terms of efficiency and definitely more reliable there is no point having one in my opinion,
the first real breakdown will erase any savings you might have made on fuel.
petrols ve their issues too - look no further than the 330i 272bhp unit... injector failure common fault costs same as a TDI injectors but they are a new tech so have some catching up in the reliability stakes yet.
Isnt it an MOT fail if your car should havea DPF ad it is removed? i.e. the targets they will have stored for your model of car will be far higher than your model minus DPF as sch MOT fail until it is replaced?
If costs are an issue/timebomb Warranty is the way to go.
Isnt it an MOT fail if your car should havea DPF ad it is removed? i.e. the targets they will have stored for your model of car will be far higher than your model minus DPF as sch MOT fail until it is replaced?
If costs are an issue/timebomb Warranty is the way to go.
Welshbeef said:
Isnt it an MOT fail if your car should havea DPF ad it is removed? i.e. the targets they will have stored for your model of car will be far higher than your model minus DPF as sch MOT fail until it is replaced?
I think diesel is still visible smoke test only, no measurement at this time.Gassing Station | General Gassing | Top of Page | What's New | My Stuff