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S40 / V40 '96-'04 General Forum for the Volvo S40 and V40 (Classic) Series from 1995-2004. |
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Dipstick popped out plus white smokeViews : 734 Replies : 13Users Viewing This Thread : |
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Jan 23rd, 2019, 22:24 | #1 |
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Dipstick popped out plus white smoke
The dipstick has popped out on my V40 2.0t a couple of times over the past week, spraying oil on the crankcase in the process. That's in addition to thick smoke at idle and on deccelaration. Any ideas please?
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Jan 23rd, 2019, 23:12 | #2 |
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I would look at the PCV system for a start (positive crankcase ventilation). Pressure will build up in the engine itself if this system isn't working properly and I'm assuming the dipstick is popping out to let the excess pressure release. More knowledgeable people should hopefully be here to sort you out soon!
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Jan 23rd, 2019, 23:29 | #3 | |
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Jan 25th, 2019, 19:56 | #4 |
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Sounds like clogged PCV to me.
Here is a vid about testing it: [YOUTUBE]https://www.youtube.com/watch?v=FIRoc0VxLd4[/YOUTUBE] Last edited by emrfaruk; Jan 25th, 2019 at 20:15. |
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Jan 26th, 2019, 13:17 | #5 | |
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Jan 27th, 2019, 00:12 | #6 |
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Take a look at the one way valves of PCV system, one or the two should be shot.
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Jan 27th, 2019, 00:29 | #7 |
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The PCV is shot , Don't leave it like it as it will cause the crank or cam seals to fail which will cost you .
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Jan 27th, 2019, 00:33 | #8 |
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They only matter when engine's turbo is under boost.
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Jan 28th, 2019, 00:28 | #9 | |
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I'm little concerned I've run the car with it being my daily driver enough to cause that damage already or would it be more obvious if that was the case? The smoke I've been seeing is mostly on deccelaration from 70 to 60 and then at lower speeds and idle. I'm hoping it's excess fuel from running rich. The only thing I am struggling with now is which pipework to check and whether I should just replace it all. Thanks again. |
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Jan 28th, 2019, 00:30 | #10 |
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