RichRu
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Registered: 29th Aug 15
Location: West Midlands
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I've got a bmw 118d dpf light came on few weeks back so decided to have it removed and mapped...had the dpf removed today and it's being mapped next week but I've noticed on boost little cloud of blue smoke..id say it's worse when it just comes onto boost then you let off..me mate (mechanic) who removed it said get it mapped first because it could be its because it's still running a map with dpf in so could be something to do with that failing that turbo could be on its way hence why dpf got blocked..anyone shed any light on this?
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mattievRS
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Registered: 20th May 06
Location: Leicester
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Any diesel with no DPF will smoke on boost. Have it mapped and it'll probably be even worse.
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Neo
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Registered: 20th Feb 07
Location: Essex
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Yeah my 330 smokes like crazy with no dpf, don't worry about it
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RichRu
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Registered: 29th Aug 15
Location: West Midlands
User status: Offline
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Ahh ok then..feels a lot better already with just the dpf took out so looking forward to it being mapped
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FlaFFy_91
Premium Member
Registered: 30th Sep 08
Location: Formby, Merseyside
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There's a difference between blue smoke and the black smoke most generic derv maps produce.
Blue smoke is oil, it's probably a sign your turbo is on the way out.
The dpf tends to catch the smoke. When it's in there. So chances are you've had a turbo on the way out for a while but the dpf has been catching the smoke. Now there no dpf the smoke is coming out the back.
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RichRu
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Registered: 29th Aug 15
Location: West Midlands
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That's what I originally thought turbo on its way out...see if it continues once it's mapped
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AdamF
Premium Member
Registered: 24th Apr 02
Location: Bexhill, East Sussex
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have you had the dpf totally removed or just the insides taken out? as you will have problems come MOT time if its not there at all.
[Edited on 02-03-2016 by AdamF]
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RichRu
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Registered: 29th Aug 15
Location: West Midlands
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Just the insides taken out
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FlaFFy_91
Premium Member
Registered: 30th Sep 08
Location: Formby, Merseyside
User status: Offline
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If there's weld marks you will still have a problem.
And you will have the problem anyway if they emissions test it...
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mattievRS
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Registered: 20th May 06
Location: Leicester
User status: Offline
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quote:
Originally posted by FlaFFy_91
If there's weld marks you will still have a problem.
And you will have the problem anyway if they emissions test it...
They don't do emissions tests on diesels do they? Just smoke tests......... Which I also guess will be an issue......
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RichRu
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Registered: 29th Aug 15
Location: West Midlands
User status: Offline
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Not really worried about "mot time" the issue was bit of blue smoke..ain't noticed any extra black soot but then it ain't been mapped yet so might be different after..but still
That's not Something I'm worried about
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R Lee
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Registered: 15th Aug 03
User status: Offline
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I had the option of DPF delete.
Couldn't justify the extra shit ton of smoke coming out of what is a respectable car.
No smoke, no poke. Nah... I'd rather it not look like it's broken.
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FlaFFy_91
Premium Member
Registered: 30th Sep 08
Location: Formby, Merseyside
User status: Offline
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quote:
Originally posted by mattievRS
quote:
Originally posted by FlaFFy_91
If there's weld marks you will still have a problem.
And you will have the problem anyway if they emissions test it...
They don't do emissions tests on diesels do they? Just smoke tests......... Which I also guess will be an issue......
Same difference. You use an emissions testing machine to do the smoke test. So it doesn't matter what you call it. Your will still have an issue with it come mot time.
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mattievRS
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Registered: 20th May 06
Location: Leicester
User status: Offline
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quote:
Originally posted by FlaFFy_91
quote:
Originally posted by mattievRS
quote:
Originally posted by FlaFFy_91
If there's weld marks you will still have a problem.
And you will have the problem anyway if they emissions test it...
They don't do emissions tests on diesels do they? Just smoke tests......... Which I also guess will be an issue......
Same difference. You use an emissions testing machine to do the smoke test. So it doesn't matter what you call it. Your will still have an issue with it come mot time.
Ok pal, calm down. Just asking the question, as I'm not familiar with what it's actually called or done on.
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DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
User status: Offline
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As above Blue smoke = Engine oil so probably turbo seals or heavy breathing (worth changing the crank case filter if its not been done).
Get someone to rev the car and then have a sniff, burnt engine oil is very distinctive.
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RichRu
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Registered: 29th Aug 15
Location: West Midlands
User status: Offline
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Ye I'm thinking turbo issue myself but it's got to be mapped anyway so I'll see what it's like after that
[Edited on 03-03-2016 by RichRu]
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DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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Why does it need to be mapped? Surely it should be mapped when it's rubbing it's best?
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RichRu
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Registered: 29th Aug 15
Location: West Midlands
User status: Offline
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Few people have said it could be because it still thinks a dpf so ain't running quite right..it's got to be done anyway so I'll let you know how it goes
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gazza808
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Registered: 30th Jun 08
Location: Peterborough
User status: Offline
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as said blue smoke isnt diesel burning.
why does every one assume if you remove the dpf, map it etc you get a shit tonne of smoke,
maps are getting alot better i've removed the dpf and pre cat, before the map and after the map i have no more smoke then when it was completely standard.
Mot time and the emissions test last time it was mot'd it was unmapped dpf and cat removed and it pissed the test...
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mattievRS
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Registered: 20th May 06
Location: Leicester
User status: Offline
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quote:
Originally posted by DaveyLC
Why does it need to be mapped? Surely it should be mapped when it's rubbing it's best?
Surely if it's had the DPF ripped out the car is going to know that and throw an engine light/code? Engine light is an mot failure isn't it? Then you map it to map out the engine light and DPF.
[Edited on 04-03-2016 by mattievRS]
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DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
User status: Offline
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quote:
Originally posted by mattievRS
quote:
Originally posted by DaveyLC
Why does it need to be mapped? Surely it should be mapped when it's rubbing it's best?
Surely if it's had the DPF ripped out the car is going to know that and throw an engine light/code? Engine light is an mot failure isn't it? Then you map it to map out the engine light and DPF.
[Edited on 04-03-2016 by mattievRS]
It doesn't need a remap, if the EML is on it needs an 'DPF delete'.. It would be completely pointless changing the fuel/boost map as nothing has changed and it sounds like its smoking anyway.
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RichRu
Member
Registered: 29th Aug 15
Location: West Midlands
User status: Offline
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lights not on..it is having a dpf delete along with the remap
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