Diesel - white smoke
Discussion
2011 FIAT Grande Punto 1.3 MJET - fab car and no complaints.
Last months I suffered from serious white smoke under 1st and 2nd gear acceleration . . . but every now and then, every other week.
Also: smell when at stand still and with the engine off. Plastic, oil and also every now and then.
Two weeks ago I had the ECU reset and dropped some oil to set the level.
Engine felt fine and the smoke was gone. I was happy.
Until this afternoon . . . There was the white smoke again. After a few good 3-4K thrashings it was gone.
Any thoughts? Thanks.
Last months I suffered from serious white smoke under 1st and 2nd gear acceleration . . . but every now and then, every other week.
Also: smell when at stand still and with the engine off. Plastic, oil and also every now and then.
Two weeks ago I had the ECU reset and dropped some oil to set the level.
Engine felt fine and the smoke was gone. I was happy.
Until this afternoon . . . There was the white smoke again. After a few good 3-4K thrashings it was gone.
Any thoughts? Thanks.
dinkel said:
Two weeks ago I had the ECU reset and dropped some oil to set the level.
Was it overfilled with oil?Is it burning oil?
Is your coolant level staying constant?
Without knowing these its hard to say but smoke plus a burning smell might suggest a turbo oil seal is on its way out.
Best get it looked at professionally as a runaway lubricant burning situation isn't good.
White smoke is usually unburnt diesel, usually down to a glow plug not heating enough and one cylinder doesn't burn cleanly shoving unburnt diesel out the zorst till that cylinder is up to temp and burning cleanly, or it;s a weeping injector that is filling a cylinder with diesel while stopped ?
S0 What said:
White smoke is usually unburnt diesel, usually down to a glow plug not heating enough and one cylinder doesn't burn cleanly shoving unburnt diesel out the zorst till that cylinder is up to temp and burning cleanly, or it;s a weeping injector that is filling a cylinder with diesel while stopped ?
I thought black smoke was unburnt fuel?It's trying and by the looks of it failing to regen the DPF properly. The higher oil level is due to it being diluted with diesel as the engine injects more to try and get the exhaust temp up high enough. Get it in the garage and get them to run a forced regen on it and change the oil.
White smoke is incomplete combustion. If you don't have a DPF then this can be injection timing too retarded, not enough compressoin, engine running too cold (think winter startup), water in the bores or even air in the fuel.
But if you've got a DPF then that's the prime culprit. Is the car trying to burn off the DPF but can't for some reason? I'd give it a good fast motorway run for half an hour and see how it goes.
But if you've got a DPF then that's the prime culprit. Is the car trying to burn off the DPF but can't for some reason? I'd give it a good fast motorway run for half an hour and see how it goes.
OK, no black smoke . . . but white smoke and indeed mist-like.
As it is only for a minute or so and after 15 mins I can go along with a cocky injector.
The funny odd thing is: I don't feel any loss of power or pick up.
Maybe it's bad diesel - I will try and avoid cheap non-brand fill ups and see what happends.
As it is only for a minute or so and after 15 mins I can go along with a cocky injector.
The funny odd thing is: I don't feel any loss of power or pick up.
Maybe it's bad diesel - I will try and avoid cheap non-brand fill ups and see what happends.
I'd say it is trying to clean its DPF - Injects Diesel into the exhaust to raise the temp of the DPF. Result is white smoke. So its probably just that. They need a good 20min run at 3k every month or so really. And make sure you only top up with low saps oil, otherwise you will block the dpf.
Other possibility for white smoke is that a new pope has been elected.....
Other possibility for white smoke is that a new pope has been elected.....
Lol - good un.
The diesel needs a service every 15K kms. Garage cleans DPF with stuff.
There's an auto mode in the ECU that tells the DPF to burn. When that happends - very rarely, I drive the car! - the display tells me to run the car for at least 10 mins at > 2K revs.
I try and keep the engine at 2K when cold for the first 15 mins. After that I pull up to 3K which is enough to use the gears properly. It's not a winterproblem BTW.
Thanks for the advice: bottemline is is should not worry, it's only unburnt diesel
The diesel needs a service every 15K kms. Garage cleans DPF with stuff.
There's an auto mode in the ECU that tells the DPF to burn. When that happends - very rarely, I drive the car! - the display tells me to run the car for at least 10 mins at > 2K revs.
I try and keep the engine at 2K when cold for the first 15 mins. After that I pull up to 3K which is enough to use the gears properly. It's not a winterproblem BTW.
Thanks for the advice: bottemline is is should not worry, it's only unburnt diesel
Hi
I have this exact problem with my Fiat Punto.
Every now and then half way through a journey it will emit a great amount of white smoke. This will persist for about 15 minutes.
I have had it into a garage multiple times - there was a faulty injector that was fixed and a they did a force regen as it looked like the DPF was blocked.
I am at a lost cause now - any ideas what it is? If I need to worry ?!
I have this exact problem with my Fiat Punto.
Every now and then half way through a journey it will emit a great amount of white smoke. This will persist for about 15 minutes.
I have had it into a garage multiple times - there was a faulty injector that was fixed and a they did a force regen as it looked like the DPF was blocked.
I am at a lost cause now - any ideas what it is? If I need to worry ?!
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