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08-24-2011, 05:16 AM | #1 |
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VANOS gasket leaking
Hi guys,
I've been told that my VANOS gasket is leaking by the dealer (2006 Z4M Coupe). They are going to charge me AU$1,000 (approx 600GBP) to fix. I was told that the whole VANOS unit has to be pulled off and then the engine has to be re-timed. Does this sound right? Any help would be appreciated. Thanks. |
08-24-2011, 08:37 AM | #2 |
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I would give up a kidney before I would let a dealer touch anything related to my car's timing... especially in an area where S54 experts are spread thin. Search for "VANOS bolts" and "head gasket" to see what I'm talking about. I'm on my cell phone so I can't see what you drive, but check the E46 M3 forums if you haven't already (same engine, many more cars produced).
What made the dealer decide the VANOS seals needed to be replaced?
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08-24-2011, 08:44 AM | #3 |
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No the vanos does NOT have to be retimed for just a gasket job. This fix should only take about an hour or so. Like what pokey says, go to M3Forum.net (http://www.m3forum.net/m3forum/forumdisplay.php?f=9), under E46 M3 and do a search. The seal/gasket repair is in several DIY.
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08-24-2011, 08:52 AM | #4 | |
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08-24-2011, 11:25 AM | #5 |
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stupid question, but how do you tell when VANOS is leaking? does it leak oil outside so you can notice it or is this an internal thing?
i love the S54, but it's pretty high maintenance compared to S65..
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08-24-2011, 12:29 PM | #6 |
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The seal will "weep" a bit ... it may be a bit more maintenance, but the S65 doe not have the valvetrain of the S54.
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08-24-2011, 05:26 PM | #7 | |
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Vanos Leak
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But first clean the area well and take the car for a spirited drive and re-check the area (may need mirror to see the bottom ). If you do have to remove the Vanos I found (tip from another member) that seperating the Vanos unit ( bottom solenoid section from the mechanical top portion) made it much easier to remove and install because there is very little clearance between the vanos unit and the front rad.support. -I had mine off to replace the Exhaust Vanos Gear and Sprocket bolts. Hope this helps |
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08-25-2011, 03:18 AM | #8 | |
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wrose - I was going to get these bolts changed too. did you do this because your VANOS was noisy or just as preventative maintenance? what was the outcome? |
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08-25-2011, 05:36 PM | #9 | |
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cam sprocket bolts
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-I was lucky because i discovered the tab brioken on the exhaust vanos gear that would have caused a mess if th tab had fallen into the chain area. |
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10-17-2011, 06:52 AM | #10 |
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Thought I'd give an update.
Took the car to a reputable independent BMW mechanic who showed me that my VANOS gasket wasn't leaking at all. Lesson learnt- dealers are criminals in disguise. My car will not be going back to them. Had the indy replace my cam (VANOS) bolts as preventative maintenance too. He told me that the bolts that were on there were not loose at all, but I feel it was still good to do just in case. He also gave me the old bolts and they show no signs of shearing. |
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