New rules for MOT – to test for diesel particulate filter
Just wait till you get the Euro Cat VI with NOx sensors and treatment injectors in exhausts, just getting an exhaust fitted will be trouble. As for EGR’s they are a botch just to try and reduce NOx’s being generated by loweing the temperature of the combustion chamber.
Checking for Cat’s during an MOT is an interesting item, if the shape of the exhaust section is unchanged and the emissions are fine, it’s very difficult to find a reason to fail it. Subaru’s with straight pipe the size of a flue for an aga and emissions well off the scale are easier to spot.
Just because it is proposed for inclusion to the MOT test doesn’t mean to say it will make it into test criteria, there was a big thing a while back about putting window tinting in, but the industry kicked up about buying extra equipment and calibration that it was chucked out and remained an item for the police.
As for catalytic converters failing don’t see many, but in the main coil packs that have gone down, so lots of unburnt fuel making it into the exhaust and poisening it, or cheap replacements. Some crack and break up as well, old mondeo’s seem keen on this.Posted 4 years agoElShalimoMember
to balance molgrips postPosted 4 years ago
a DPFs history is unknown when buying 2nd hand so you can easily inherit someone else’s clogged up dpf but it could be a few months or a few minutes before the problem appears, then you end up a gibbering mess when they tell you it’s £2k to fix it
Plus if it’s a poorly designed one like Mazda6 2.0d then the problem could happen again even if you drive it properly
molgrips – Member
Dpfs get clogged with soot if people don’t follow the instructions.
My cars are tools- they do the driving I want them to do, I don’t expect them to be telling me go for a long drive otherwise it’ll shit the bed. Imagine a hammer that every so often insists you bash in nails for 40 minutes at a rate of no less than 3 nails a minute otherwise the head’ll fall off and you’ll need to spend a grand on a new one.Posted 4 years ago
You service it once a year don’t you? You defrost the windscreen before driving? You get the tracking checked, camblet changed, you check tyre pressures and oil? This is no different, except you don’t have to pay someone else to do it and it only takes 10 mins.
Hows your dpf molgrips ? Must be had to follow te instructions with a gearbox in limp mode ?
Gearbox never been in limp mode, don’t have a DPF. Maybe make some notes next time so you get your facts right 🙂Posted 4 years ago
molgrips – Member
except you don’t have to pay someone else to do it and it only takes 10 mins.
VAG group for instance insist on 40 minutes.
I service my car, because it has a job to do and that’s what it needs to do it. That’s very different from occasionally just refusing to do the job it’s for, by design. Possessions that want to own you.Posted 4 years ago
It’s no different. The oil gets dirty, you change it. Cambelt wears, you change it. DPF gets clogged, it cleans itself. You don’t let it clean itself, you have to clean it.
Anyway, you have a choice. Buy petrol. And then you can moan about spark plugs or HT leads or something instead.Posted 4 years ago
The difference is fitness for purpose, DPFs make the car less good at being a car. It’s like the difference between maintaining a drivetrain, and buying a singlespeed.
Sorry, I have to go now, I wanted to keep posting on forums but my keyboard insists my posts aren’t long enough so now I have to copy out 10 chapters from war and peace, otherwise it’ll catch fire. Just routine servicing.Posted 4 years agosobrietyMember
Ah, but the mouse blood has to be filled with Bad AIDS, and the manufacture will get all twitchy about selling you the mouse blood if you intend to top it up yourself.
I’m not looking forward to refilling the regen fluid reservoir. Bloody Peugeot hiding it away up neat the fuel tank.Posted 4 years ago
DPFs make the car less good at being a car.
Depends on your point of view. You know the DPF has positives as well as negatives, of course you do. You just don’t consider air quality to be important, it seems, despite what the WHO and everyone else say.
You could say the same about lots of safety and environmental equippment. A bit silly Imo.Posted 4 years agobonchanceMember
It’s all a conspiracy. We should be free to bypass safety devices and harm anyone we please.
Myself – I ripped out my DPF with my teeth – now I can exfoliate my skin and lungs with my own unfiltered particulates.
It’s my right.
Maybe we could start an association like the NRA to campaign.
Anyone with me?Posted 4 years agounovoloMember
, unless you follow behind them accelerating away in some out of body experience?
I have followed the Cmax when the wife’s been driving up motorway slip roads, along A and B roads and I can verify barely any black soot comes out.Posted 4 years ago
Compared to the Corsa combos and Vivaros I used to drive for work which used to kick tonnes of the black stuff out when you booted them.
come to think of it i remember my dad and uncles having a pretty similar conversation in 1990 when Cats were being talked about for cars …. and the cars that had them already like volvos and such like were getting notorious for them being fragile and failing quickly and being expensive to fix – in the 6-700 quid region IIRC
I think modern ecu controled fuel injection systems went along way to helping them live long and fruitful lives so they werent getting dowsed in petrol all the time + the technology got better.
now a days no one blinks an eye lid if a cats failed – usually because a mass overfueling issue from another part failing – and its about 3-400 quid to get a new one fitted unless your driving a VAG gold plated car( or 100 quid for a patern unit for a frenchie)Posted 4 years ago
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