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Discussion Starter #1
<DIV =post>Hi,

My Sedona has been giving me some agro recently. Its got a perpetual engine light flashing when under medium<>heavy load.
I've had it over four years and thrown thousands at the damn thing
. So this is deffo to last time I'm going to get it fixed, next time its scrap


Its got a Deplhi fuel system which I understand will make many Mondeo owners cringe. I've had a friend hook it up to his laptop whilst taking out for a spin. No fault codes come up, but he made an observation that it was showing 100% fueling even when just normal acceleraion.
He concluded that it was the MAF sensor that was dodgy. I waited a few weeks and met up with another mate who happened to own a Sedonka like mine. Today we swapped out the full intake filter/MAF assembly and I went for a spin again.
........totally no change, light still coming on etc.

So, to conclude, 1) engine check light keeps flickering on at load , 2)no fault codes , 3) MAF sensor checked okay.

I looked up a forum post from somebody discussing an inlet metering valve fault. This got me wondering :-

- Would a good dose of 400ml Forte Diesel treatment straight in the filter be worth a try?
- Is it possible the IMV could be replaced in its own or is it integral to the Delphi pump.
- Can anyone give me some more pointers to help isolate the problem.
- any known and trusted CR diesel specialists in Manchester<>Leeds area which can be recommended.

Cheers

<BR clear=all>
 

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Discussion Starter #2
...thought the above might be too in depth for the average Joe Public.


I managed to get connected to a diesel specialist in Halifax ( IDS) who gave me some very good pointers.



Whilst it may be possible its the IMV device at the front of the pump, from all the symptoms I gave, they were suggesting it was an injector issue, i.e. one was leaking off and causing a pressure drop.

Essentially the problem I have is fuel pressure related, so its either the supply from the pump or the maintenance of pressure in the system.



As soon as I told the guy that my injectors have had previous form with chuffing and sealing issues, he was more convinced that they have been HOT and one or more could have sticking leak-off control bits.

So the next step is that I'm going to get my garage to take out the injectors ( and log the number specific to each cylinder ! ) and get them all tested. I'm advised that they can be reconned.



Apparently , all this is commonplace with Mondeo's & Focus's as they also have Delphi fuel systems ( but that won't stop people lambasting KIA Sedonas as crap ).



The BIG lesson I'm learning and can't emphasize enough is......AVOID SUPERMARKET DIESEL LIKE THE PLAGUE. ONLY USE PROPER BP/SHELL STUFF. This is because the modern diesel fuel systems require good lubrication properties from the diesel....and supermarket stuff doesn't offer that.

In my other car ( Honda Accord 2.2 I-CDTI) I've had a regime of only putting in Shell V-Power diesel. I'm going to extend that to the Sedona from now on.

I know it costs ~5p/ltr more but when you balance that out with the agro you avoid, then its money well spent.







Edited by: ebod
 

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Why take injectors out for a leak of check, only takes a matter of minutes using leak of test equipment, ideal test when on car and running.
IMV are an issue in early new shape sedonas.
 

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Discussion Starter #4
Hi Leon,
Long time, no ...email :) .The other forum has never been the same without your valued input. I often wondered why you stopped posting.



I've now kinda set this jobup with my garage now so its awkward to do a u-turn. Its going in on Monday.



These injectors have seen a lot of action now at 8yrs / 132000 miles, so a check/clean wouldn't hurt IMO.



IDS told me its not a difficult job to unscrew the IMV off the pump and look at it. The suggestion was to have a piece of back paper handy and tap the IMV on the paper on a bench to look for tiny metallic particles. I may still ask my garage to do this.

IDS said that a more telltale symptom of a faulty IMV was uneven idling. Mine idles fine...



Do you have any photos of the business end of the Delphi pump so I can actually see the IMVandhow it comes out? I'm not 100% sure , but don't beleive I can just source a new IMV as it may be considered as integral to the pump.

 

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Delphi may be able to supply an IMV for you, the new sedona has imv issues, kia supply a imv in a delphi box on it's own, it's held in by 2 torx screws.
 

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Discussion Starter #6
when you say 'new Sedona'....do you mean the 2006+ ? You've confused me.


Whats the part code / price foran 02<>06 IMV ?
 

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yes 'new' sedona 06>
As far as i know kia don't list the 02-06 sedona imv seperate, a delphi specialist may be able to help.
 

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Discussion Starter #8
quick update. Had my injectors tested an they are all condemed..i.e. frazzled due to overheating.


over 4 yrs ago when I first got the car, its had been suffering from loose injectors. They overheat from vibration and bypassing cumbustion gases ( known as chuffing ). I was hoping the test would confirm maybe one injector was faulty. Basically I need 4 new ones at ~£165+vat each so my garage bill will exceed £1000 quid on an 8yr old car.....gutted




I wish I was in a position to do something esle, but unfortunately I'm stuck with it
 
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