[Andrew1967]

Hi, so my problem is this ..

My 207 HDI (9HP engine) has been smoking for quite some time, mates at work call it Smokey Joe ! Seems to be blue and black smoke. After quite some time with the occasional warning that the DPF was at risk of clogging but never going into limp home mode (always pulled like a train, seems more powerful than a 92), it finally did do that . I had the DPF cleaned out and thats sorted that BUT it still smokes heavily.

I've got an elderly Snap On Ethos scanner, which I know isn't great, but it does do basic stuff. I plugged it in but had to set it as a 208 as that was the only car that showed the 9HP engine (207 didnt show that engine). These are the readings for the injectors ...

I noted that Cylinder 2 was way out for one set of readings but 3 out on the other. No fault codes have ever appeared for the injectors.

After speaking to a few people, I decided to buy a new Bosch injector (same numbers) and fit it to Cylinder 3. I presume it doesn't need coding as it seems that reading various comments on the internet, that Peugeot injectors don't require coding.

It's now worse and the readings on 3 is no different to that of the original injector. Someone said I may need to get the ECU to relearn the values but cannot see how to do that on my scanner. The other question is, is it cylinder 2 that's the problem in which case I'll fit the injector I took out of 3 and put into 2 !!

Hopefully someone will be able to tell me what these readings mean and what to do, as I'm at a loss, p***ed off and am swearing never to buy a modern diesel again, especially one with EGR/DPF !!

 

[Andrew1967]

 

[RedSector]

Can you check, the engine designation code from your VIN (positions 6,7,8) just to confirm the engine code is 9HP.

Given the procedure from WSM for a 9HP, says, "Enter the classification numbers for the new diesel injectors with the aid of the diagnostic tool." seems unlikely they don't need a some coding done. But your diagnostic tool maybe able to do this ?

The colour does not seem to indicate an issue with fuel injectors to me.
Have you checked the CCV system (it's similar to PCV on petrol) for excessive oil entering.
Have you run a compression test or better yet a leak down test.
Cylinder Leak-Down Test: A Step-By-Step Guide (carfromjapan.com)
Cylinder Leak Down Test - What Are The Results Telling You (dannysengineportal.com)

swearing never to buy a modern diesel again, especially one with EGR/DPF

That wipes just about anything from 2000 upwards. A Provent 200 (cyclone that separates oil/water from recycled air) is a good choice to prolong these systems and avoid the frequency of issues within these systems.

 

[Andrew1967]

Thanks for your reply RedSector .. I've attached a photo of the VIN number for your reference and it is a 9HP engine apparently.

I looked through the diagnostic tool yesterday and couldn't find a section to code injectors. I'll have another look and ask the guy I bought the tool off if it can be done and I'm just not looking in the correct place. If it cant I've a friend with an up to date diagnostic who should be able to do it for me.

Do you have any thoughts on the readings I've shown on cylinders 2 & 3 ?

I will have a look at the CCV system, once I've ascertained what constitutes it. Haven't done a leak down test .. presumably that needs the injectors taking out ?

Apart from the smoking and subsequent blocking of the DPF it has never been a problem. It's always gone really well, the guy who did the DPF couldnt believe it was only a 92 and said more like 120 . I've had the car from 10 months old with 12k on the clock and I've never done anything to it, so unless it was re-mapped in the first 10 months, it is standard.

Luckily it is our 'spare' car so if it takes a few weeks to sort out its not a problem.

Regarding the comment about modern diesel, I've a 2008 207 90 owned since new, no DPF and that has been no issue at all. I wouldn't buy a car with a DPF again as they are nothing but trouble. I'm into classic cars more so would probably buy a good 90's car to use as a daily commuter, something like a 306 D Turbo, non HDI.

 

[RedSector]

Catalytic convertors are not all that different to DPF on diesel.
Leak down test are normally done through the glow plugs as it can detect a leak in the injector seat.
I start digging into information about the injectors now confirmed the engine.

CCV is similar to PCV but built into head cover normally (some are serviceable and others, you replace head cover). They can malfunction like a PCV.

 

[Andrew1967]

Thanks, appreciate your help on this

I'll check out the CCV in the meantime.

The car does appear to be over fuelling I think, as apparently it stinks of diesel when being followed. I think its down on MPG too . Maybe all part of a wider issue.

I hate modern stuff, much prefer old school stuff that's far less hassle, but moved with the times, apart from my classic Minis.

 

[windy1603]

That looks like a software error on that correction value, do not forget cylinders are numbered from gearbox end. If you have a Bluetooth ELM adaptor or similar and a smart phone or tablet the FAP app will give you a lot more data to help find fault.

Do you have a diesel knock when you rev the engine and how is the starting

 

[Andrew1967]

Hi Windy, I was aware of the odd way of numbering the cylinders. The readings are identical with the old injector and the new one. Someone said it might need the ECU to relearn the values and a reset is required for that.

Only get diesel knock when booting it and over 2500 rpm , the car always lost power over 3000 and had diesel knock. It starts absolutely fine, no problems at all ... smokes like a coal fired power station.

Havent heard of an ELM adaptor or the FAP app .. will look into that.

 

[windy1603]

I think its a software glitch in your code reader. Yes injectors need coding and it often a idea to reset or relearn injector pilot injection cut off etc.

When you code the injector it often resets anyway and then relearns but it needs warm engine

Then accelerate to greater than 2500 rpm. Then take foot of accelerator and let the car speed drop with out using brake, accelerator or changing gear until revs drop below 1250. Repeat at least three times during driving cycle

Sent from my SM-T830 using Tapatalk

 

[Andrew1967]

Thanks for your reply. I'll have to borrow a tool that can code the injector. Will also do a leak off test to see if that shows anything.

 

[RedSector]

See if this is helpful

 

[Andrew1967]

So latest is … borrowed a mates Autel scanner to code the injector today. Changed the MAP sensor. No fault codes at all both before and after coding. Still smokes like the Flying Scotsman !!
I did buy a leak back test but couldn’t get them to fit securely on to the injectors ??!!!!

 

[Andrew1967]

 

[windy1603]

Does it use any coolant as the only thing left that I can think of is the egr cooler leaking

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[Andrew1967]

Hi, doesn’t use any water. Honestly the smoking is really horrendous. I’d post up a video of it on tick over but can’t seem to add a video ?? Wondering if it’s the turbo (seals) but still pulls well. Will take the pipes off and have a look inside.

 

[windy1603]

Have you tried running it with MAF disconnected to see if it still smokes

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[Andrew1967]

No, haven’t tried that but have noted a problem with the oil … see photo !!!
Stinks of diesel and way over level . I have seen on internet that the injectors inject diesel into the exhaust to burn off the soot in the DPF during a regen process but it also ends up in the sump degrading the oil. Knowing that it has done several regens due to the DPF ‘at risk of clogging’ it would seem this is the cause for the state and level of the oil.

I’m going to change the oil and filter and see what that does .