White smoke- Peugeot HDi. EGR cooler... ?
White smoke- Peugeot HDi. EGR cooler... ?
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AndWhyNot

Original Poster:

2,359 posts

223 months

Friday 25th September 2015
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Having an issue with my Peugeot Expert. It's an 04 plate HDi 16v.

I've spotted occasional wisps of white smoke when idling. This started shortly after the garage used Wynns as "a cleaner" to ease the emissions through the MoT in June. I figured the smoke might actually be the Wynns burning off so didn't pay too much attention at first.

Latterly, though, there's more smoke, still mostly on idle, and it's accompanied by a sweetish smell - a bit like when first igniting a disposable BBQ.

Alongside this, my coolant light has occasionally flashed on when the van's been parked on a camber. Coolant in the reservoir has headed towards the "low" marker over the last 3 months but still above it. There's no oil consumption or contamination, and no discernible change in performance.

Having googled the symptoms it reads like the EGR cooler might be on its way out and leaking coolant but I can't find much beyond that- it doesn't seem to be a common problem with the model/ engine, but there's a few tales of it happening to various VWs and some US-market Fords.

In the first instance, does that all stack up? Anything else to think about checking/ other symptoms to look out for?

Skipping forward, I've got a 600-mile round trip on Monday and another next weekend. Given the slow development of this issue to date, is it foolish to even contemplate taking the van, albeit with an ongoing eye on coolant levels? Could it all go spectacularly wrong, very quickly?

Even further forward, with no Haynes manual produced for the vehicle does anyone know if it's likely to be a replacement I can make myself on the driveway over the course of a weekend, or something best left to a specialist?

Over to you- thanks in advance.

andyiley

12,518 posts

176 months

Saturday 26th September 2015
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White "smoke" coming out of a diesel engine is either steam or unburnt diesel.

From what you describe it is probably diesel, if it only at low engine speed, you need to get your injectors checked out as a first stop, check the oil level isn't rising by fuel getting through into the engine sump.

A compression test may help narrow the issue down too.

bungz

1,965 posts

144 months

Tuesday 29th September 2015
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Sounds like buggered injectors.

Get em checked, as said above if they are spent they could leak diesel into the oil.