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#1
4th February 2018, 09:32 PM
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Intake vacuum bellows on start up - video
Evening all,
I recorded the bellows on start up to check if they operate normally....however I’m not sure what I’m looking for. Is the cold start from the video normal operation? They appear to move freely by hand when the engine is off as well. Do they move under throttle as well?
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2002 S8 - Irish Green Pearl. Cat N (saved by the D2 Doctor  )1988 E30 Coupe - Royalblau Metallic 2003 S4 Avant - Light Silver Mettalic 2016 S5 Coupe Black Edition - Glacier White 
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#2
4th February 2018, 09:37 PM
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They look slow to me, mine close up instantly on starting.
Maybe you have a vacuum leak or the manifold flaps are not free to move? They will move back out at fairly high revs - 3000+ IIRC?
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2003 D2 FL S8. Irish Green Pearl/Beige. Solar sunroof, auto-dim mirrors, electric rear seat functions and extended leather. Ski hatch retrofit. Aftermarket reversing camera. DVB-T and XCarlink now removed as redundant. 2016 Volvo V40 T5 Cross Country (4WD) with ALL the toys including adaptive cruise etc. etc. Osmium Grey with Blonde/Charcoal leather interior. Polestar performance "optimisation".  (Even rarer than a D2 S8!) Oh, and a brand new engine at just under 30,000 miles on the factory one!  Finally: gone, but not forgotten..... 1998 D2 PF S8. Agate Grey/Platinum. Every option (I think) except electric rear seats, Tiptronic steering wheel, ski hatch, towbar & dimming door mirrors. e.g. Cruise control, NavPlus/TV, Bose, GSM, Xenons, Solar roof, Parking sensors, Alcantara/leather everywhere of course.  (internal dimming mirror added later)1998 (very early) Ford Focus 1.8 Zetec; ABS/TCS, Heated screen/mirrors, Aircon. Added Auto-dim mirror, Leather seats, Trip computer, Cruise control, OEM Ford SatNav with CD changer. And before that a lot of Rover 800s, a few oddities, a lovely Triumph Dolomite 1850HL with Overdrive and way back in my schooldays an Austin Seven aka Mini 850! 
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#3
4th February 2018, 09:38 PM
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That's exactly what they're supposed to do
 They don't move with the throttle, but at a specific rpm (can't remember), controlled by the ECU.
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#4
4th February 2018, 10:51 PM
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Thanks both. I will ask the wife to record it whilst I give it some revs.
Do you have a video of some that you know operate normally for comparison?
__________________
2002 S8 - Irish Green Pearl. Cat N (saved by the D2 Doctor )1988 E30 Coupe - Royalblau Metallic 2003 S4 Avant - Light Silver Mettalic 2016 S5 Coupe Black Edition - Glacier White
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Linear Mode
