Isuzu DPF yet again!

[sawdust]

Some vehicles need to have over a quarter of a tank of fuel and not have any other electrical faults to regenerate, if the ecu detects any open circuits it won’t regenerate.

 

[shelly reynolds]

Only ask as we've only just got to Adblue engines and one on a new loader, which in 14 months old has only used 2 bars on gauge in just over 650hr of lightish work, just wondering if we're heading for problems. Sales rep quoted one Adblue fills to 3 diesel fills

 

[Lakesdigger]

Depending how you buy store and use adblue keep everything to do with it spotlessly clean and do not use any containers or funnels with any metal to transfer it. Its v corrosive to metal and any contamination will damage system. Depending on how much you use buying a 1000 litre cube will be cheapest but work out the contamination risk transferring it if you're filling containers to then put it in machine may be easier in 20 litre drums.

 

[Cowabunga]

Only ask as we've only just got to Adblue engines and one on a new loader, which in 14 months old has only used 2 bars on gauge in just over 650hr of lightish work, just wondering if we're heading for problems. Sales rep quoted one Adblue fills to 3 diesel fills

The hotter and harder they run, the more adblue is consumed. Light work will result in light adblue use, both because less fuel is used and because NOx is primarily produced by hot efficient combustion. Which is why my air cooled Same engine could never make it to stage 2 emission regulations. They did try but those engines filled yards with white smoke when cold started. Too much EGR probably, which they needed because they otherwise run with a very hot efficient combustion when loaded.

 

[Highland Mule]

Tempted to have a go and take DPF off and and scrape it through, then chuck it into a hot bonfire till it’s red hot! But suppose that won’t work either

I took the pipe off a Ford Kuga once, then stuck the pressure washer on it until the water came out clean (along with a bit of the packing material. Bolted it back on and seemed to solve the issue for the next couple of years. From memory there was an issue with a pressure sensor as well, but a swap cured that too. Was doing regular 350 mile trips at the time, and never drove slowly, so no excuses for the car.

 

[Courier]

Depending how you buy store and use adblue keep everything to do with it spotlessly clean and do not use any containers or funnels with any metal to transfer it. Its v corrosive to metal and any contamination will damage system. Depending on how much you use buying a 1000 litre cube will be cheapest but work out the contamination risk transferring it if you're filling containers to then put it in machine may be easier in 20 litre drums.

We find that having AddBlue delivered in bulk into 2 alternate 200 litre drums and then using a direct fill pump is a good compromise - Currently have 6 vans using it ...

 

[jondear]

Could be why, Mrs N had until recently a VW Tiguan, because all it did was short journeys the warning light would keep coming on, it was then up to me to give it a good thrashing to make it regen.

Just bought a second hand golf gone to petrol for this reason .Dealer said new diesels are terrible for short journeys .He had a brand-new vw diesel after two weeks driving few miles to work the dpf lights came on . It needed a long run on motorway .

 

[Womblefarrier]

I took the pipe off a Ford Kuga once, then stuck the pressure washer on it until the water came out clean (along with a bit of the packing material. Bolted it back on and seemed to solve the issue for the next couple of years. From memory there was an issue with a pressure sensor as well, but a swap cured that too. Was doing regular 350 mile trips at the time, and never drove slowly, so no excuses for the car.

Well that’s the lines I was thinking.....umm Brillo pad??

 

[smallholder99]

90 hp case tractors were still direct injection with no engine electronics till yr 2014,since then theyve gone from 4.5 litre to a 3.4litre ecu gutless engine

 

[Cowabunga]

90 hp case tractors were still direct injection with no engine electronics till yr 2014,since then theyve gone from 4.5 litre to a 3.4litre ecu gutless engine

Tractors have had lesser emission regulation to follow than cars and trucks, whose regulations also vary with the hp output of their engines. However, tractors and other off-road plant and equipment have very nearly caught up with cars now and have more or less similar added-on rubbish on the engines and exhaust as cars and trucks.
Both cars and tractors of some brands at different times have had inferior throttle response and torque curves in their attempt to lower emissions to the then relevant standards as cheaply and with the greatest reliability as possible. Others, like JD, went the Uber-complex way with variable vane computer controlled turbos and external cooled EGR plus DPF, all of which have been quite problematic. They have all now converged again with largely better performing engines that use both Adblue and some EGR, but not all find it necessary to fit DPF yet. They might from this September on though.
Diesel engines have become very very complex and expensive to manufacture and indeed to run in the long term. There's no getting away from it except by continuing to run good older tractors, foragers and combines. The long term cost to repair these will probably be a fraction of the cost over a long period running a tractor bought new today, especially taking into account depreciation.

 

[DHI77]

No that was on the pre adblue engines.

We've a MY 10 Alhambra with adblue and it was called for the 'FIX'. We declined, even the offer of free adblue didn't tempt us.