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Home > General > Help lumpy on start up black grey smoke |
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jules Member Since: 13 Dec 2007 Location: The Wilds of Warwickshire Posts: 4992 |
Wow - it is thick smoke, I cant see a thing Jules |
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16th Feb 2019 7:18 pm |
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jules Member Since: 13 Dec 2007 Location: The Wilds of Warwickshire Posts: 4992 |
That Id like to see Jules |
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16th Feb 2019 7:19 pm |
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johnboyt04 Member Since: 28 Feb 2018 Location: westsussex Posts: 36 |
I keep trying to upload but not sure why it won’t or what I’m doing wrong
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16th Feb 2019 7:47 pm |
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johnboyt04 Member Since: 28 Feb 2018 Location: westsussex Posts: 36 |
Morning guys sat with the diagnostic this morning to have a look at live data and found a fault code p2297 oxygen sensors out of range on deceleration which made me look at live date of bank 1 and 2 sensor on the cat which where At 88.04c both of them and the car is cold so wonder if this is telling the Ecu fibs |
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17th Feb 2019 12:49 pm |
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IanMetro Member Since: 11 Sep 2017 Location: Somerset BS21 Posts: 3126 |
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17th Feb 2019 2:48 pm |
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Yorky Bob Member Since: 28 Apr 2015 Location: Yorkshire Posts: 4561 |
Do we agree its not thick black smoke ? Not pure white (water in bores) More of the blue tinge variety ?
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17th Feb 2019 3:17 pm |
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IanMetro Member Since: 11 Sep 2017 Location: Somerset BS21 Posts: 3126 |
Bob
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17th Feb 2019 7:50 pm |
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Yorky Bob Member Since: 28 Apr 2015 Location: Yorkshire Posts: 4561 |
We are clutching at straws possibly but you could do a pressure check of the combustion chambers and they could read OK. Turn off the engine, go to bed with oil passing the valve stem seals dropping into said combustion chambers as they are open could they not ? FL2 MY10 TD4 GS traded in at 2 years
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17th Feb 2019 8:25 pm |
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jules Member Since: 13 Dec 2007 Location: The Wilds of Warwickshire Posts: 4992 |
Yes they can. Non-turbo diesels still suck air into the cylinders and therefore still create a negative pressure in the intake manifold but its nothing like a petrol engine as there is no throttle valve. That's why they need a vacuum pump for the brake servo. I'm not sure exactly what the situation is with turbo diesels but they still have a vacuum pump. Jules |
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17th Feb 2019 8:37 pm |
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Past master Member Since: 30 Jun 2010 Location: Isle of Ely Posts: 2710 |
That picture is impressive! As I said earlier, it looks exactly like my experience with the Disco 200. I think if it's down to valves/guides then you'll get a fairly short burst of smoke while the pistons clear. It should also happen whether the engine is hot or cold - in fact more oil would bleed in on a hot engine. When I had the timing problem the smoke would happen for a good few hundred yards until everything warmed up. And only happened with a cold engine. I wonder what all that burning oil is doing to the exhaust system. Ex AA Series III LWB Safari - Gone
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17th Feb 2019 9:04 pm |
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Dartman the one Member Since: 04 Apr 2013 Location: Seville, Spain Posts: 1686 |
May just be valve seals, hot oil runs down the stem when switched off, however it won't be noticeable when running as the amount is less due to the valve close action, though I would have thought that would be unusual. My Daimler V8 engine which never had seals had a tendency to do this but not quite as large smoke screen my PC is slightly to the right of Genghis
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18th Feb 2019 4:59 am |
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Yorky Bob Member Since: 28 Apr 2015 Location: Yorkshire Posts: 4561 |
Some older type Petrol engines on overrun (like going down hill and then opening up) would blow blue smoke. I had it on a brand new Fiat in 1981 and valves had to be done.
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18th Feb 2019 9:36 am |
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Delboy Member Since: 31 Aug 2017 Location: Norwich Posts: 108 |
My wife’s diesel Ford Fiesta does that badly on a cold start each morning. We’ve been told by two different ford dealers it’s most likely one or more worn and leaking fuel injectors.
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18th Feb 2019 9:57 am |
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Bobbyg Member Since: 04 Dec 2016 Location: Yorkshire Posts: 214 |
Same here on an xr3i ,valve stem oil seals .it was that common they could be done without taking off the head.
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18th Feb 2019 10:02 am |
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