Zafira billowing out smoke from exhaust

atrixblue.-MFR-.

on regen DPF usually throws out whitish blue smoke, and is only minor in comparison to say a failed water pump or failed valve stem seals.


the smoke could be related to the fuel mix up in the past, its not as simple to as to drain the tank and refuel and refuel as you go till your satisfied its been eliminated form the tank although sometimes you can get away with no damage sometimes the damage has started before you've even drained the tank and then get worse over time.


I would start in the small area's first, fuel filter, egr clean out, forced DPF regen and see if that cuts down the smoke, and a service and fill up with good diesel and tank addative to clean injectors allot of people use different brands and stick to them I prefer to use wynns products.
then I would move over to the more bulky stuff like compression test to see if the stem seals or gone if not, then onto the high pressure pump perhaps the lubricating properties that the diesel had provided had got washed off and the damage got done when the petrol cleaned the pump internals then if not that onto the water pump and so on.

force_ten

is it a blown turbo ?

that will give a lot of pure white smoke

[Deleted User]

These modern diesels are more trouble than they're worth. Why anyone who does less than 20k a year bothers I do not know.

arcon5

Last time I saw white smoke pi55ing out of my exhaust in a fog like manner the head gasket had gone on my diesel mondeo.

Although in an 06 plate zafira there was an issue with thick grey smoke intermittently. This was the dpf had been removed and it needing remapping. Problem solved

gilbert_and_sullivan

White smoke is usually unburnt fuel, failed DPF regen sounds like a reasonable cause.

ilikewatch

Maybe a turbo seal's failed and you're heading towards a runaway turbo...

motorguy

Deleted_User wrote: »

These modern diesels are more trouble than they're worth. Why anyone who does less than 20k a year bothers I do not know.

+1

Have to agree.

Turbos, injectors, pumps, EGR valves, DMFs, DPFs. Far too much to worry about.

AdrianC

Another vote here for turbo seals. Get it sorted ASAP, before there's sufficient leak-by for the engine to run on the oiliness, over-revving the engine until it runs out of "fuel" - engine oil... I gather that the usual main dealer procedure for dealing with a runaway diesel is to evacuate the workshop until the engine's killed itself and the bits have stopped raining down.

ilikewatch

AdrianC wrote: »

Another vote here for turbo seals. Get it sorted ASAP, before there's sufficient leak-by for the engine to run on the oiliness, over-revving the engine until it runs out of "fuel" - engine oil... I gather that the usual main dealer procedure for dealing with a runaway diesel is to evacuate the workshop until the engine's killed itself and the bits have stopped raining down.

- If they can't promptly force it into a high gear and make it stall.

I remember once seeing some guidance that in the event of turbo diesel runaway everyone present should retire to a minimum of 50M away until the engine catastrophically fails or stops of its own accord.

AdrianC

ilikewatch wrote: »

- If they can't promptly force it into a high gear and make it stall.

Do you fancy being in an enclosed space with somebody trying to stop a full-throttle engine by sticking it in gear and letting the clutch out? Seems like a nice way to make a car-shaped hole in a wall, always assuming no other vehicle gets in the way first.