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 Posted: Mon May 16, 2011 1:18 pm |
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Joined: Feb 07, 2010
Posts: 150
Trade Rating: +1
Location: South Coast
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Wonder if any one could put me on the right track.
My high miler 1.4 HDI runs very well, returning good MPG and burns very little oil.
At the last MOT, when it came to the smoke test, it belched out clouds of black sooty smoke and just about passed at the third attempt.
It has now become worse and I'm fearful it will fail the next MOT.
Is there a usual reason for this ?
Any and all help would be greatly appreciated. Thanks. 
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Posted: Mon May 16, 2011 1:24 pm |
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Joined: Feb 09, 2010
Posts: 1067
Trade Rating: +2
Location: KENT
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do you take it on long runs short runs, do you floor in or take it easy i belive if you you take it up and down the motor way quite heavy footed it should clear
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Posted: Mon May 16, 2011 1:27 pm |
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Joined: Sep 11, 2010
Posts: 79
Trade Rating: 0
Location: Nottingham
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yep needs a bloody good blow out from the sounds of it 
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| drive fast !!! live life faster !!! | |
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Posted: Mon May 16, 2011 1:45 pm |
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Joined: Feb 07, 2010
Posts: 2360
Trade Rating: +3
Location: Sheffield/Chesterfield/Dronfield
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Dirty fuel? or turbo (if the 1.4 has a turbo) on the way out (thats what happened to me)
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Posted: Mon May 16, 2011 1:58 pm |
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Joined: Oct 03, 2010
Posts: 428
Trade Rating: 0
Location: Northern Ireland
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I've never had a smoke test in my hdi
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Posted: Mon May 16, 2011 2:07 pm |
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Joined: Mar 29, 2010
Posts: 3977
Trade Rating: +15
Location: Halifax
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You kind of answered your own question. Its a diesel 
Or your turbo could be fudged.
...or were you stupid enough to put petrol it it?
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Posted: Mon May 16, 2011 2:08 pm |
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Joined: Feb 08, 2010
Posts: 10151
Trade Rating: +12
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clean the air filter, change the oil.
if none of this help then check the turbo.
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Posted: Mon May 16, 2011 2:23 pm |
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Joined: Feb 07, 2010
Posts: 2720
Trade Rating: +6
Location: UK
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| Aar_Im_A_Pirate wrote: |
| I've never had a smoke test in my hdi |
You have, at every MOT.
When was the car last serviced?
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Posted: Mon May 16, 2011 2:38 pm |
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Joined: Oct 03, 2010
Posts: 428
Trade Rating: 0
Location: Northern Ireland
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| Steve206 wrote: |
| Aar_Im_A_Pirate wrote: |
| I've never had a smoke test in my hdi |
You have, at every MOT.
When was the car last serviced? |
I go through NI mot. We only do petrol emissions =D
Been through 2 mots with it. You should see some of the cars that pass mot with the reek flying out of them
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Posted: Mon May 16, 2011 3:03 pm |
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Joined: Feb 07, 2010
Posts: 2720
Trade Rating: +6
Location: UK
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Diesels do a smoke test, but maybe its different in Ireland.
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Posted: Tue May 17, 2011 4:57 am |
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Joined: Sep 05, 2010
Posts: 461
Trade Rating: 0
Location: Somerset
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Its normal to push out excess smoke on the first couple of 'blasts' on the throttle if the car has previously been only pottering around and built up a residue of diesel particulates in the exhaust system...........the fact that it passed the mot suggests to me that nothing is wrong with your vehicle.......Another reason for excess smoke is a dirty air filter, have it looked at.
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| 1.4 hdi, 206, Year..2003, 100,000 miles
Mercedes, ML270CDI, 2002, 200,000 miles
BMW K1200RS | |
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