I have been using 100% biodiesel in several Peugeots, 405 SRDT, for a long time. I make the fuel myself and do not attempt to achieve high conversion nor do I wash the fuel. Thus it contains methanol, soap, glycerine and partly converted glycerides. I have never had a fuel related problem with these cars.
Recently I purchased a Peugeot 307 diesel, 2004, 2 Litre HDi and now need to learn a lot. I have been following other blogs and see sad stories about Peugeot 306s and 307s. Most of these relate to problems resulting in the car going into "limp home" mode. The mechanic is then unable to correctly diagnose the problem, and the customer is charged large sums replacing components that did not need replacing. Naturally this I want to avoid.
The best explanation for these problems is that dirt gets into the high pressure pump. The cause is the filter cartridge not being properly seated when it is replaced, allowing fuel to flow round it. The dirt restricts flow through a very fine mesh filter past the high pressure pump. Low pressure is then detected in the rail.
The safest solution for these problems appears to be to throw away the whole filter, cartridge and housing, and replace it with the complete unit, straight from Peugeot, as recommended by an experienced mechanic.
I have also been advised never to use more than 20% biodiesel. I have been using 50% with no problems so far and am wondering about going to 100%.
My solution to the dirt problem is to put a pre-filter in front of the Peugeot filter, which has caused no problems so far. This way the Peugeot cartridge would never need replacing. This leads to further questions:
1. What specifications does the Peugeot filter have?
2. What specifications should a pre-filter have?
3. Does the Peugeot ECU throw up a low pressure warning if the fuel filter starts to restrict the flow? This could be used to time the replacement, rather than using a specific interval or number of km.
4. Does a 2004 307 have a diesel particulate filter (DPF).
5. If so, does it have a regeneration system?
6. If so, what type is it?
Any thoughts on these questions would be greatly appreciated.
I do not have personal experience wit the Peugeot, however Graham Laming has. Perhaps trying him at his website ?
** Biodiesel Glycerine Soap - The Guide
- on 5 continents helping people make & sell soap from the Biodiesel Glycerine.
Go to this forum and follow the link given on the second posting. FAP= DPF
Let us know if it gives you the info you are looking for.
PS- the translation from French to English is on the bottom left of the page, not top right.
I also have just acquired a common rail Peugeot. A 206 HDi
I ran the VIN through the last two links in Tilly's post and interestingly it came back on both systems as a 2004 model.
According to the registration document it is actually a 2001.
Firstly let me say I would have never expected to be writing on here, giving you advice.
I have seen your posts over the years and am very impressed with your advise and expertise.
The wife and myself run 2x peugeot 806's 2.0 hdi's. They don't have DPF's. We have had them 2 years, they are 2001. Each one has done @ 15000 miles on B100 since we have had them.
I take care with the bio, even if the 10/90 test shows 0.1ml dropout, I will re-process. The soap level is always <20ppm and water <200ppm. I water wash and dry with one of IMB's turbo dryers. I check the water with my KF.
I have never experianced the problems you mention with the fuel filter.
Hoping this helps you, Dave.This message has been edited. Last edited by: Dgs,
advice c for the noun
advise s for the verb
My father bought a new 306 HDi in 2001, and you wouldn't believe the problems he had with it. Running on pump diesel, it would constantly go into limp mode and sometimes break down entirely, requiring recovery back home. The main dealer was useless, and so in desperation he had the car towed to Sewells, the diesel specialists in Leeds. They cleaned the filter that is placed between the main fuel filter and the HP pump using ultrasound, but the problem came back again time after time. The final time he took it in, they found that there was a problem with the main fuel filter that was allowing unfiltered fuel to pass to the HP pump. After cleaning one last time and sorting out the fuel filter, the car has now run for years without the problem reoccurring. It seemed at the time that the problem would never be solved, but reading what others have written in this thread, it seems to have been a common problem with the fuel filter on this model.
It is considered "bad form" to point out spelling mistakes
We're all here to learn. DGS is a thorough "nice guy" who I am sure will appreciate the hand up.
Dave...from what I remember there was an incredibly fine filter within the HP pump. It was this that was blocking due to unfiltered fuel passing through the main filter housing. The only way to clean it was using an ultrasound parts washer.
The car also used to run on a few seconds after switching off, which I understand is a classic symptom of this problem.
Tilly, Paulus, and David Shinn, thanks all for the comments. (will have to use the spellcheck in future)
If you use firefox for your browser it automatically spell checks and it is easy to block pop-up advertisements. You would be amazed at the advertisements you no longer see when using firefox and the ad blocker.
Unfortunately most spell checkers would not have caught this mistake because they are both valid words.
After a year, I entered today in the forum and have the pleasure to meet you here again. I've read your last post below.
Years ago I used B50 unwashed biodiesel in my 306 (mechanical pump) and had several troubles with the heating plugs. After 5000km they became burnt and had to be changed. We could never solve those problem. At present, none trouble in my Xsara HDI.
By the way, since the 2013 year we use liquid lye (50% purity) in our high temperature reaction. In Argentina is difficult for our clients to purchase solid lye in pearls. Of course in this case we had to leave the unwashed process, and pass the BD trough a sawdust filter, with very good results. Conversion is still 98-99%.
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