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Discussion Starter #1
Hi,

Have recently purchased a nice 2009 2ltr HDI and mainly being a petrol man the Diesel's are a little unknown to me.
I've read a few posts on issues with Diesel's especially the additive and dpf filter/valve playing up.
Can anyone confirm what preventative maintenance i can carry out to minimize any hassle with these and associated items

Car has covered 67k miles and last serviced in March this year. I'm trying to get the records of the service to see what was done but no luck so far.

Any help/advise greatly appreciated.
thanks
 

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2009 sounds a little late for a 307?

The diesel engine is much more suited to longer trips at higher speed. Using the car to nip down the road for a pint of milk isn't the best way to use the car.

The DPF filter can clog up, mainly due to the car not being driven correctly (ie. few long motorway runs).

The way the DPF filter works is a quantity of fuel additive is squirted into the diesel tank every time you open the fuel filler cap. This additive reduces the temperature that the particulates burn at.

The DPF captures particulates created by the combustion process, and as the exhaust gases heat up the DPF, the particulates turn to ash and are expelled out. This whole process is called a regeneration process, or regen, as it regenerates the filter and clears it out.

The car MUST be doing at least 2100rpm in 4th gear or higher in order for the engine to work hard enough and the exhaust gases to get hot enough to burn off the particulates.

This is why short trips are no good for these cars. The exhaust simply doesn't get hot enough, and the filter clogs.

Blockages in the DPF can have knock-on effects, such as turbo failures. And it's not an easy job on this engine to replace the turbo!

Also, the glow plugs need to be working, as does the cooling fan, EGR and coolant systems, in order for the car to regen.

It's also worth noting that your fuel additive will run out quicker if you only put £20 of diesel in at a time. The amount of additive that gets injected into the fuel is the same, whether you put 6 litres or 60 litres of diesel in the tank.

Keep on top of the oil changes, use good quality oil. Ensure that the car has a frequent long run on the motorway, most people stay in 4th gear whilst doing a constant 70mph for a good half hour.

Everything else is common sense - look after it and it'll look after you. It's a cracking engine, as long as it's cared for.
 

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Discussion Starter #3
Thanks Jimmy.

Yes i thought a 2009 model should be a 308 but it checks out and all papers are correct.
Good advise on giving it a blast , i do roughly 30 miles a day but its mainly A roads so a good run of a weekend sounds like a good idea.
Good advise on filling up, was thinking of keeping 1/2 tank as a min but sounds like running low then a full tank of fresh will benefit more.
I've no reason to suspect issues and have a clean(no faults logged)dash to start with.
Was thinking , would my pp2000 show what's been re-set or adjusted lately . Just to trying and see what's been done in the past


Thanks
 

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Diagbox can show the fault code history, planet doesn't have this feature.

A handy way of getting some idea of the cars service history is checking the MOT history on the .gov website, it can give you an indication of what parts have needed replacing in order to pass the MOT
 

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Discussion Starter #5
Have got the mot history which has only advisories on it.
Was hoping any history or pp2000 would have indicated if the magnetic counters had been re-set when or if the additive tank was replenished.
 

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You can get an idea if the tank has been refilled and counters reset but it wont tell you exactly.

For example the fluid will last between 60 and 100k miles generally depending on fill up frequencies 80 seems about norm so if car had 100k miles and counters say it has lots left then its been reset.

At 67k i would expect it to be getting low though

The software tends to think the DPF needs changed at 100k miles so if it says distance since last filter is a lot then thats been reset too but dont worry too much they dont NEED replaced they just need told its been replaced my last car had nearly 200k on the original filter
 

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Discussion Starter #7
Thanks for the update .
I'll check pp2000 this weekend and see what i can find.
Can i physically check the additive tank to see its level or do i just wait for it to run low.
Car was last serviced in March this year and the receipt shows £16.95 for tank additive. I queried this with the garage and they confirmed its a fuel additive they put directly in the fuel tank to aid the regen process. The regen tank in the rear was not touched.

Does this make sense to anyone. Is there an additive that can be put directly in the fuel tank as well ?

thanks
 

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It was probably a bottle of Wynns DPF cleaner or similar. The fluid for the additive tank is different, it's probably Eolys, although there are other variants of additive.

You still need the additive tank to have fluid in it, simply dropping a can of Wynns in the diesel isn't the same as the additive tank
 

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Discussion Starter #10
ok got ya.
So Eolys in the regen tank only. Is there a inspection window or some sort of measurement i can see on the regen tank to gauge whats in there.

Does an additive in the fuel tank help at all. I'd rather be preventative and try to avoid issues than be reactive and wait for something to fail. Any recommendations on products out there ?


thanks
 

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Just buy the diesel from the so called better suppliers like BP etc as opposed to supermarkets. I have had no problems with the 4 different makes of vehicles that I put the supermarket diesel in.
 

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The fluid in the additive tank is pumped in at each refill it will last longer if you run full to empty rather than £20 at a time as it just injects a set amount in each time regardless of amount of fuel put in.

There is no sight glass to see the level but planet will tell you how many grams are left how often it is regening how much is in the DPF etc assuming it is regenning.

If the system is working and the car is driven properly it does not need any real maintainance.
 

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Discussion Starter #13
Thanks guys for the overwhelming advise and info.
As previously mentioned my Eolys tank must be running low at 67-68k miles.
As a precaution I'm going to get a litre of Eolys and see if i can top up the tank whilst running a diagnostic on pp2000.

Most youtube info on regen replenishing this is done on ramps in the air. Anyone tackled this on the driveway?. Was thinking is it easier to remove the tank completely and fill rather than trying to gravity feed from a bottle down a pipe?


Cheers
 

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Discussion Starter #14
Finally had a little time to run my pp200 on my new motor.
All checks out no probs or issues or faults except 3 on the engine ECU.

1. Perm fault pre- heat relay circuit , relay controlled and spark plugs not supplied
2. fuel pressure regulator control. Pressure to high
3.Electric EGR valve . Valve position repeat. Valve jammed during programming.

No bearing in mind the car runs great with no probs, i cleared the faults and then went onto live data. Fluid regen tank holding 2400ml(is 3000 full) and particle filter emissions were at 68% with 18.47 grms of soot in the pef.

Decided a 15min run up the m6 was called for to clean things out a little. half hour later back on pp2000 and shows emissions at 4% and soot level was 0.8g so definitely on the right track there.

No faults returned on the ECU except the pre-heat circuit plugs not supplied. I'm guessing these are like glow plugs that you put in for harsh winter/colder climates.
Is this more of a case that pp2000 is recording something is not fitted rather than its not working?


thanks
 

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If regens are happening which they seem to be just ignore the glowplug fault the concensus is it is a ghost fault as most HDI cars display it and those that do try to fix it dont seem to manage to fix it.
 

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Discussion Starter #16
Thanks reliable406.
Yes regens definitely happening, last recorded at 37mls on pp and the fact the filter went from 68 down to 4% after a blast.

Thanks for confirming
 

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Discussion Starter #19
Hi Guys,

Sorry to be a pain( just want to check ) .....but noticed that on start up there's no glow plug warning light on my dash. Its doesn't even flash up for a second.

After a bit of research, am i right in saying that when temps above zero the glow plug heater is inactive. Once we hit minus figures it will appear to assist in starting. ?


thanks
 
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