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Author Topic: Excessive blue diesel smoke on initial start-up (130BHP TDI Galaxy)  (Read 1069 times)

Offline bouncypete

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  • Posts: 25
  • Thanked: 3
  • Model: Galaxy Mk2
  • Spec: 04 130bhp Tdi
  • Region: South East
I have a 2004 130bhp TDI Galaxy which Iíve owned from 2.5 years old and 36k miles. Itís now got 127k on the clock and in all the time Iíve owned it it has produced a large cloud of blue smoke on the first start of the day. It smells like diesel smoke rather than oil smoke and it doesn't smoke excessively on subsequent starts.

Does anyone elseís TDI do the same or does anyone know how to stop the excessive smoke on start-up?

This engine is so widely used by VW and yet Iíve not found anything by searching Google. So why am I looking into this now when Iíve accepted it smoking for all these years. I guess itís due to the stigma of dirty diesels when the car is in very good condition for its age and it runs so well otherwise.

The car was still just under manufactures warranty when I bought it I took it to several dealers who couldnít find anything wrong with it. The dealer also showed me all the other Galaxyís that they had in stock at the time and they all did the same thing. Therefore I just accepted this was Ďnormalí. It has always started very well, it still barely uses any oil between services. In the time Iíve owned it Iíve had the turbo charger replaced and this did not reduce the smoke at start-up at all.

If I crank the engine immediately without first allowing the glow plugs to do their thing it still starts perfectly and if anything, produces less smoke on start-up. This suggests to me the engine has good compression on all cylinders, otherwise itíd be lumpy on initial start and itís not caused by a faulty glow plug. This also suggests that the car is somehow adding extra fuel that it doesnít actually need when the glow plugs activate.

Any thoughts or suggestions would be most welcome.

Offline johnnyroper

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  • Posts: 2699
  • Thanked: 126
  • Model: Galaxy Mk2
  • Spec: 02 tdi 115 ghia
  • Region: South West
  • Country: United Kingdom
Re: Excessive blue diesel smoke on initial start-up (130BHP TDI Galaxy)
« Reply #1 on: September 05, 2018, 01:19:31 PM »
Slightly leaky injector nozzle or injector seals leaking by overnight.

Try a fuel additive initially see if it helps over a week or so.

Offline Mirez

  • Pondering the next mod...
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  • Posts: 3571
  • Thanked: 130
  • Model: Galaxy Mk2
  • Spec: 03 115PS Ghia
  • First Name: Mark
  • Region: South West
  • Country: United Kingdom
Re: Excessive blue diesel smoke on initial start-up (130BHP TDI Galaxy)
« Reply #2 on: September 05, 2018, 02:21:12 PM »
Depends on your definition of large. Every PD engine I've ever come across chucks out a small cloud of exhaust fumes on the first start of the day which, by modern standards, looks bad. How big are we talking? Maybe video it?
03 Ford Galaxy 1.9 TDI 115 Ghia in Spruce Green Metallic
With cream leather interior, Full Bodykit, Remapped at 145bhp, Lowered on 18's
06 VW EOS 2.0 T-FSI 210 Sport in Deep Black Pearl
With red leather interior with full Caractere bodykit, Remapped at 255bhp and sitting on 19's
14 VW Tiguan 2.0 TDI 177 R-Line in Deep Black Pearl
With black leather interior, panoramic sunroof and bi-xenon headlights.
08 Ford Transit 2.2 TDI 115 in Frozen White
With retrofitted everything except another slidey door! :)

VCDS HEX/CAN - Scans/Coding done in Wiltshire in exchange for winegums! :)

Offline bigjeeze

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  • Posts: 307
  • Thanked: 2
  • Model: Galaxy Mk2 Auto
  • Spec: 03 Tdi Ghia Auto
  • Region: South West
  • Country: United Kingdom
Re: Excessive blue diesel smoke on initial start-up (130BHP TDI Galaxy)
« Reply #3 on: September 05, 2018, 05:21:20 PM »
I had this on mine - I then had to change the head gasket and I thought I would do the valve stem seals at the same time to reduce the blue cloud.  - It didn't!
On the Square

Offline christiant

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  • Posts: 96
  • Thanked: 3
  • Model: Galaxy Mk2
  • Spec: 02 TDI 115 Zetec
  • Region: Non UK
Re: Excessive blue diesel smoke on initial start-up (130BHP TDI Galaxy)
« Reply #4 on: September 05, 2018, 07:06:08 PM »
Mine did this because of worn cam! And the valve lobes were fine, the one on cylinder 4 was worn. Check group 13 when cold and if anything out of spec, it is very possible that that is the problem. On mine eplaced MAF, checked cam for wear but didn't see the lobe for injector rocker, checked turbo hoses, replaced 1 injector, checked torsion value... Cleaned the airlines and EGR.. Checked glowplugs... Nothing. Only went away after replacing camshaft. Very important on these is to run them on 5w40 to avoid the issue.

Offline bouncypete

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  • Posts: 25
  • Thanked: 3
  • Model: Galaxy Mk2
  • Spec: 04 130bhp Tdi
  • Region: South East
Re: Excessive blue diesel smoke on initial start-up (130BHP TDI Galaxy)
« Reply #5 on: September 05, 2018, 08:35:44 PM »
Mine did this because of worn cam! And the valve lobes were fine, the one on cylinder 4 was worn. Check group 13 when cold and if anything out of spec, it is very possible that that is the problem. On mine eplaced MAF, checked cam for wear but didn't see the lobe for injector rocker, checked turbo hoses, replaced 1 injector, checked torsion value... Cleaned the airlines and EGR.. Checked glowplugs... Nothing. Only went away after replacing camshaft. Very important on these is to run them on 5w40 to avoid the issue.

Thanks for this.

I'm curious to know how a worn injector cam/rocker can cause excessive smoke on start-up but not during normal running, it's only recently passed it's MOT and the emissions were fine.

I'll also try to run VAGCOM group 13, I'm not that good with VAGCOM but I'm sure I can work it out. Also, for what it's worth I've always used proper PD oil.

Offline christiant

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  • Posts: 96
  • Thanked: 3
  • Model: Galaxy Mk2
  • Spec: 02 TDI 115 Zetec
  • Region: Non UK
Re: Excessive blue diesel smoke on initial start-up (130BHP TDI Galaxy)
« Reply #6 on: September 05, 2018, 09:25:39 PM »
Check group 13 when cold while its doing it. I had exactly all the symptoms you describe. Did you check torsion value? A video describing the symptoms..


Also could be other things injectors, injector seals, tandem pump seals between tandem pump between head and pump, but I did all those and ended up doing the shaft along with lifers and bearing caps. It is hard to see the lobes for the injectors, the ones for the valves are visible but you can't see the other lobes unless you pull the rockers off. Otherwise it was completely fine apart from on start ip! After I did this, the engine had better throttle response too and more torque in the low revs. It is important to set the injector lash after doing this.

Offline actionvin

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  • Posts: 49
  • Thanked: 1
  • Model: Galaxy Mk2
  • Spec: TDI 04 Ghia
  • Region: South East
Re: Excessive blue diesel smoke on initial start-up (130BHP TDI Galaxy)
« Reply #7 on: September 06, 2018, 08:15:20 PM »
mine does this exact same thing, just first thing in the morning .. never at any other time, just passed it's MOT so i'm finding it hard to be bothered by it. It's just a bit inconvienient when the window is open and you get a face full of diesel inside.   

Offline christiant

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  • Posts: 96
  • Thanked: 3
  • Model: Galaxy Mk2
  • Spec: 02 TDI 115 Zetec
  • Region: Non UK
Re: Excessive blue diesel smoke on initial start-up (130BHP TDI Galaxy)
« Reply #8 on: September 08, 2018, 09:19:29 PM »
Sorted mine as I mentuoned above. No smoke ever on start up now.

Offline SirDavidAlhambra

  • Sir David Alhambra.
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  • Posts: 362
  • Thanked: 3
  • Model: Alhambra Mk2 Auto
  • Spec: 2006 1.9 Tdi auto
  • First Name: Dave
  • Region: South East
  • Country: United Kingdom
Re: Excessive blue diesel smoke on initial start-up (130BHP TDI Galaxy)
« Reply #9 on: July 06, 2019, 04:47:05 PM »
Johnny roper is right , I would bet itís the turbo.

Anyway itís probably not a big problem so just let the car warm up and donít worry unless you get other problems
I drive a Seat Alhambra 1.9Tdi which has 115bhp and an automatic gearbox.

I am happy to help you with all your questions. I am not a qualified mechanic but seem to be better at fixing my car than even the most experienced garages.

I have lots of friends here and very much enjoy talking with you all.

Always remember, a motor car is a serious tool and should be treated with respect. Put your safety first, always.

 

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