Slightly rough start + smoke, not great at low revs

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Euanatkinson
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Slightly rough start + smoke, not great at low revs

Post by Euanatkinson »

Hi everyone,

I bought a 1.6 Citroen Berlingo Swb van a few weeks back. It’s had full service with new cam belt, breaks, tyres etc, seemed like a solid buy at 100k miles

I didn’t notice when I went to see it but on the first start of the day it’s kicking out a fair bit of white smoke. It also sounds slightly rough when starting up. when hill starting on a steep hill it seems very sluggish and hesitant but will then kick into action and on a few occasions when reversing on a steep hill it’s also kicked out some black smoke a few times

I bought it privately but with full service history and On previous MoTs it has failed Exhaust emissions tests.

It’s been for a check out at a Citroen dealer and they suggested I took it for a bomb down the motorway as it’s most likely been used for stop start driving so I did that yesterday, but seems similar today.

Any advice on what to do here?


Thanks a lot

Dormouse
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Re: Slightly rough start + smoke, not great at low revs

Post by Dormouse »

my ducato did that and it returned a fuel rail set of errors. cleared the faults and it is running fine. Passed it's MOT. It has stood unused a lot (and still does) so I am not exactly sure what caused it. Get a set of readings downloaded and see what shows up. If your problem is fuel pressure sensor related then there are lots of potential helpers here. There are other possibilities too.

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moizeau
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Re: Slightly rough start + smoke, not great at low revs

Post by moizeau »

Does it bring up the MIL?

Dormouse
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Re: Slightly rough start + smoke, not great at low revs

Post by Dormouse »

It did on my van. It has behaved since but the van is not moving much at the moment. Not convinced I won't have to do more.

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moizeau
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Re: Slightly rough start + smoke, not great at low revs

Post by moizeau »

Mine was the egr, very strong smell of diesel when cold, OK when warmed up.

Dormouse
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Re: Slightly rough start + smoke, not great at low revs

Post by Dormouse »

That is what I actually suspect too. Pint Pot, as the van is called, had a short engine fitted 35000 miles ago and I am certain nothing else was replaced. Torn ligaments in my knee is stopping me from tearing things apart at the moment. I can't hear a clear EGR cycle after I switch off but I am going to service a whole host of things before Pint Pot is finished.

Dormouse
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Re: Slightly rough start + smoke, not great at low revs

Post by Dormouse »

Sorry Euan for hijacking your thread. EGR is a possibility but I would ask everyone else out there to come back to you with their thoughts. Fault codes are still a handy thing.

Dormouse
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Re: Slightly rough start + smoke, not great at low revs

Post by Dormouse »

While you are waiting for other replies Euan, try a reputable diesel additive to help clean the EGR and other parts of the engine. Yes, getting the whole engine and exhaust completely hot for a good 30 minutes plus is a good thing. Pootling about will never get the complete set up "warm". By hot I don't just mean getting the temperature gauge up, I mean hard driving to raise the complete system above normal and no I don't mean thrash it. There is a difference.

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Hell Razor5543
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Re: Slightly rough start + smoke, not great at low revs

Post by Hell Razor5543 »

There is what is known as "An Italian Tune Up". This is taking the vehicle out for a long FAST drive (at least 30 minutes) to allow the vehicle to properly 'clear her throat'. If I am taking my vehicle for an MoT (as opposed to getting others to do it) I will make sure to get her nicely warmed up, as this will certainly help with the emissions test (as a warmed up engine produces less soot than a cold one).

I have used Wynns Diesel Injector Cleaner on every vehicle I have owned on the first tank of fuel I put in them. As I don't know how they have been driven before I got them I want to help clear their pipes. I bought three bottles from ebay recently for £14, which is quite a saving. You put ONE bottle into a full tank (I put it in before adding the diesel, as this will ensure it gets properly mixed into the fuel).

https://www.ebay.co.uk/itm/143927389437 ... 2749.l2649

Dormouse
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Re: Slightly rough start + smoke, not great at low revs

Post by Dormouse »

Loading the vehicle with extra weight (not overloading it) and finding a long steady incline/open hill to power up will "heat" the engine system up better than a run on the level. Not always easy to find for people in an urban area.