Citroen C3 EGR/turbo problem
Fred
You may remember I posted about my diesel C3 that had lost power. I
had the codes read and they were turbo under pressure and an EGR
fault. You kindly suggested I had a leak. You were right. The garage
finally found that the pipe from the turbo has a broken seal and most
of the pressure was escaping out the back.
They think that because there was not enough air getting into the
engine, the car was effectively running rich and this has caused the
EGR bits and pieces to clog up with soot.
I did see inside the EGR pipe and the walls were black. Is this not
normal?
Rather than charge me for cleaning them out, they have suggested a few
good runs and a thousand miles later the engine may have cleaned
itself.
Does this sound good and right so far?
They have suggested I add an additive to clean the pipes when my fuel
runs low. Do you recommend any brand in particular and if I wanted to
try some DIY cleaning of the EGR pipe what would you suggest?
Thanks.
steve robinson
Most car shops sell fuel system cleaners , i found the best to be a
tank of biofuel ,the amount of shit that got flushed out of my tank
was unbelievable and the van was only twelve months old
Duncan Wood
wrote:
> Hi,
>
> You may remember I posted about my diesel C3 that had lost power. I
> had the codes read and they were turbo under pressure and an EGR
> fault. You kindly suggested I had a leak. You were right. The garage
> finally found that the pipe from the turbo has a broken seal and most
> of the pressure was escaping out the back.
>
> They think that because there was not enough air getting into the
> engine, the car was effectively running rich and this has caused the
> EGR bits and pieces to clog up with soot.
>
> I did see inside the EGR pipe and the walls were black. Is this not
> normal?
>
> Rather than charge me for cleaning them out, they have suggested a few
> good runs and a thousand miles later the engine may have cleaned
> itself.
>
> Does this sound good and right so far?
>
Yup.
> They have suggested I add an additive to clean the pipes when my fuel
> runs low. Do you recommend any brand in particular and if I wanted to
> try some DIY cleaning of the EGR pipe what would you suggest?
>
> Thanks.
If it's not in the pipes then it's in your fuel filter & that clogs a lot
faster than pipes.
Fred
<st...@colevalleyinteriors.co.uk> wrote:
>Most car shops sell fuel system cleaners , i found the best to be a
>tank of biofuel
Hi. When you say "fuel cleaner" do you mean a fuel additive? I have
seen Redex, Wynne's, etc in the shops; I just wondered if one was any
better than the rest?
Did you buy your biofuel from a pump or was it home made?
Thanks.
Fred
<nntp...@dmx512.co.uk> wrote:
>If it's not in the pipes then it's in your fuel filter & that clogs a lot
>faster than pipes.
Thanks. Do you suggest I change the fuel filter? According to Haynes
IIRC it should be changed by now (at 60000 miles?). When I tried to
buy one I could find anyone selling the 1.4L 16v HDI version, other
than the dealer and the price put me off. When the car was serviced
professionally, they never changed the filter, saying it didn't need
doing; how they knew that, I don't know.
Thanks.
PS. the engine light has just come back on with the same fault codes,
so I guess there's more to it than just a leaky pipe! ;(
Duncan Wood
wrote:
Check the EGR valve isn't sticking, & you could test if the filters
clogged by measuring the pressure drop across it, but I've never seen or
heard of it being done outside of the R&D phase, they're about ￜ30 from a
Bosch agent.
steve robinson
Sainsburies B30 , 30% biofuel
Fred
<st...@colevalleyinteriors.co.uk> wrote:
>Sainsburies B30 , 30% biofuel
I have seen that at the pumps but it also says to check with the car
manufacturer before using. Since I've had enough trouble with the car
already, I wasn't brave enough to try it. Would it work with my car;
which cars can't use it? What advantages/disadvantages are there over
"traditional" diesel. The prices were the same when I saw it. TIA.
steve robinson
Most citroens can use it , call the dealership if your worried
You get slightly better mpg , lower emissions , it as a cleaning
effect on the fuel system , they recomend you change the fuel filter
after you run a tankful through the engine
My filter was black with sludge and crap after i run a tankful
through on a vehicle that had only covered 24000 miles and was
eighteen months old
Downside biofuel causes africans to starve as we nick all the crops
for fuel
Duncan Wood
Also it tends to clog your fuel filter faster even on its own, other
effects depend on the engine & fuel system, everybody who makes engines
publishs the recommendations.
steve robinson
It only clogs the fuel filter if you havent run on bio before , thats
because it has a cleaning action on the fuel system .
If you stick to bio then you wont have any filter issues
Infact most advise that you change your filter after you first run on
bio
Duncan Wood
<st...@colevalleyinteriors.co.uk> wrote:
It tends to relocate crap that's already stuck to the inside of the fuel
system to the fuel filter, yes
> If you stick to bio then you wont have any filter issues
>
> Infact most advise that you change your filter after you first run on
> bio
Yes. & almost all diesel manufacturers advise you to carry on changing it
more often.
steve robinson
Thats a bit like how longs a piece of string though ,as filter
changes vary between manufacturers , if your change is every 12000
shouldnt be a problem , any more than that then it may be sensible if
your running on pure bio
On the b30 there shouldnt be to much of a problem
Duncan Wood
<st...@colevalleyinteriors.co.uk> wrote:
Yes & you can measure how long the piece of string is, e.g. for B30 Iveco
drop the service change for the fuel filter by a 1/3.
steve robinson
Yes but citroen on the relays dont ( or they didnt 3 months ago ) and
they run at 24000 mile intervals
It all depends on service intervals
Citroen , vaxuall and several other manufacturers also recomend
shortened filter changes if you drive in dusty conditions or you cant
be sure of the quality of fuel , they also offer different intervals
for high milage low milage and stop start drivers
The ops best option is to talk to citroen technical
Duncan Wood
<st...@colevalleyinteriors.co.uk> wrote:
I think we're both in agreement about that :-) Citroen technical probably
aren't though.
Fred
<st...@colevalleyinteriors.co.uk> wrote:
>Citroen , vaxuall and several other manufacturers also recomend
>shortened filter changes if you drive in dusty conditions or you cant
>be sure of the quality of fuel , they also offer different intervals
>for high milage low milage and stop start drivers
Thanks for the replies. I can understand why poor fuel might require
more frequent fuel filter changes but why dusty conditions, or did you
mean air filter change? How does stop start driving affect filters?
>The ops best option is to talk to citroen technical
Who are they? The service dept. at my local garage or Citroen's head
office?
Re. changing fuel filters when running on biofuel, why is it such an
effective cleaner? Wouldn't there be a point after which it will have
shifted all the dirt and you could revert to less frequent changes?
What if the car was driven on bio from day one, there wouldn't be any
dirt to shift, would that require frequent filter changes?
TIA
steve robinson
> On Mon, 26 Oct 2009 16:56:59 GMT, "steve robinson"
> <st...@colevalleyinteriors.co.uk> wrote:
>
> > Citroen , vaxuall and several other manufacturers also recomend
> > shortened filter changes if you drive in dusty conditions or you
> > cant be sure of the quality of fuel , they also offer different
> > intervals for high milage low milage and stop start drivers
>
> Thanks for the replies. I can understand why poor fuel might require
> more frequent fuel filter changes but why dusty conditions, or did
> you mean air filter change? How does stop start driving affect
> filters?
Both , in dusty conditions your fuel can get contaminated
>
> > The ops best option is to talk to citroen technical
>
> Who are they? The service dept. at my local garage or Citroen's head
> office?
The citroen garage to start with although they have a tech department
in slough if you struggle with the dealer
>
> Re. changing fuel filters when running on biofuel, why is it such an
> effective cleaner? Wouldn't there be a point after which it will
> have shifted all the dirt and you could revert to less frequent
> changes?
It shifts most of the crap after a couple of tanks
What if the car was driven on bio from day one, there
> wouldn't be any dirt to shift, would that require frequent filter
> changes?
>
It depends on sevice intervals and the quality of biofuel what mix it
is b30 or b100
Bio b100 is not made on the same scale as nrmal desiel with the same
checks
googles your freind here thier are plenty of sites that will give you
all the details
> TIA
Duncan Wood
wrote:
> On Mon, 26 Oct 2009 16:56:59 GMT, "steve robinson"
> <st...@colevalleyinteriors.co.uk> wrote:
>
>> Citroen , vaxuall and several other manufacturers also recomend
>> shortened filter changes if you drive in dusty conditions or you cant
>> be sure of the quality of fuel , they also offer different intervals
>> for high milage low milage and stop start drivers
>
> Thanks for the replies. I can understand why poor fuel might require
> more frequent fuel filter changes but why dusty conditions, or did you
> mean air filter change? How does stop start driving affect filters?
>
Filters oly care how much fluid has passed through them, they're only
specified as per 1000m as it's easy to measure, when you're testing them
you work out how many 100s litres fluid will clog them, back guess that as
a mileage & stick it in the service schedule, if you spend your life on
the motorway then the estimate will be very conservative, drive it solely
round town & it will have been optimistic.
>> The ops best option is to talk to citroen technical
>
> Who are they? The service dept. at my local garage or Citroen's head
> office?
>
Well they both ought to know. If your local garage doesn't know the
difference between b5,b30,b100 & neat rapeseed oil then you need to talk
to head office
> Re. changing fuel filters when running on biofuel, why is it such an
> effective cleaner? Wouldn't there be a point after which it will have
> shifted all the dirt and you could revert to less frequent changes?
> What if the car was driven on bio from day one, there wouldn't be any
> dirt to shift, would that require frequent filter changes?
>
> TIA
It comes with its own dirt as well, in general slightly more of it than
crude diesel. B30 gives about 3-5% less peak power on a gen set than real
diesel in the summer. In the winter it's much more sensitive to
temperature. (Winter diesel gives you 3-8% less power)
steve robinson
Many new vehicles can alter thier ignition mapping to suit B30 so you
dont suffer any loss