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Smokescreen At Start Up

tdci cold start smoke battery voltage

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#1 1979Damian

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Posted 24 February 2013 - 01:21 PM

I've owned my Focus for about 15 months now (not been serviced since June 2011...I know, I know) :o

It pretty much always starts 1st time, even when its sub zero (it usually cranks 3 times & then fires). From a cold start though it runs rough for approx 15-20 seconds (erratic idling) & I get a nice blue/grey smokescreen. Once it starts to warm up it runs fine. It pulls OK & I can still get good MPG when I drive it sensibly. I'm just a little concerned by the smoke, oh & there's no major smoking once we're up to temp & I boot it.

I'm going to start the service items shortly, other than the usual service items such as filters etc any other suggestions. Incidentally what would be considered an acceptable output from the battery with the engine off (dashboard trick). I ask because it looks like it might be the original.

Thanks in advance for any suggestions.

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#2 DanGersFord

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Posted 24 February 2013 - 01:30 PM

What colour smoke?

#3 1979Damian

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Posted 24 February 2013 - 01:35 PM

What colour smoke?


Grey/blue, it definately has a slight blue tint to it which is what concerns me :huh:. On a slight positive, it clears up after 15-20 seconds & the engine still pulls properly.

#4 DanGersFord

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Posted 24 February 2013 - 01:47 PM

Does it do it everytime you start up or just when you start up from cold?

#5 1979Damian

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Posted 24 February 2013 - 01:48 PM

Just the 1st start of the day when it's cold. If it's left a few hours after being driven so it's stone cold again it doesn't do it on the 2nd start up. It only seems to be when its been left for a 12-18 hour period i.e. overnight.

#6 DanGersFord

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Posted 24 February 2013 - 01:56 PM

All diesels to some extent put out a puff of white / grey smoke on start up due to the lower speed and thus compression pressure leading to incomplete combustion, the fact that its blue smoke is slightly strange. Could be your fuel/injector pump drawing in oil, glow plugs maybe too weak or maybe even worn stem valves leaking oil in overnight. It may be worth trying to find a diesel fuel injection specialist who will have the specialist test equipment/knowledge to check it.

#7 1979Damian

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Posted 24 February 2013 - 01:58 PM

I'm definately planning planning on doing the glow plugs in the month or 2, plus filters, fluids etc.

Thanks for your suggestions mate, it certainly gives me something to look into.

#8 DanGersFord

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Posted 24 February 2013 - 02:00 PM

When was it last serviced?It could just be down to the cold weather at the moment. You tend to get abit of incomplete combustion in such cold conditions.

#9 1979Damian

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Posted 24 February 2013 - 02:02 PM

June 2011, hence my embarrassment (and slight concern, lol). I'm getting my !Removed! in gear though, all the fluids & a genuine Ford service kit are on their way.

#10 DanGersFord

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Posted 24 February 2013 - 02:06 PM

Thats most likely the problem lol as i said change the glowplugs aswel :)

#11 DanGersFord

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Posted 24 February 2013 - 02:10 PM

Just seen your first sentance there lol

#12 1979Damian

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Posted 24 February 2013 - 09:22 PM

You should see the state of the airfilter (checked it earlier today), I'll take pics of the filters etc when I've changed everything over. :D

#13 Stoney871

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Posted 25 February 2013 - 07:29 AM

Give it a darn good service and also throw some BG244 (eBay) or Wynns High Pressure 3 common rail cleaner through with a tank of fuel to clean the whole fuel system.
You'll get a better injector flow and smoother running.

#14 IINexusII

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Posted 25 February 2013 - 09:26 AM

I also have the same white/blue smoke starting up from cold and i would also assume my glow plugs need changing as i've just serviced all the usual oils and filters except the fuel filter

#15 1979Damian

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Posted 02 March 2013 - 10:01 PM

 

Welcome to the results of my service  :o 

 

I give you 4 original glow plugs that have a lovely coating of carbon & rust. Number 3 from the left was a beeeeeeyatch to get out...& it's replacement back in...(Here's to no more cold start smokescreen). An air filter that looks like it smokes 4 !Removed! a day. I'm pretty certain the fuel filter isn't supposed to be black (Tesco diesel for you). & my poor old Magnetec oil & filter were...well, black. lol like road bitumen  :(

 

Just waiting for my LED's for the boot (x3), footwells & glovebox.



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