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Thread: Jumping oil cap

  1. 02-09-2016 01:42 PM #1
    yasiu_k
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    Jumping oil cap

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    Hi, I would like to know if there is any problem, or it is just normal. I attached video
    I replaced breather hose with 034Motorsport last week. thank you for any ideas.

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  2. 02-09-2016 01:50 PM #2
    verymickey
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    came to see a jumping oil cap, was not disappointed.


    thank you for delivering OP !
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  3. 02-09-2016 02:21 PM #3
    old guy
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    Looks normal. As the pistons move up and down they displace air underneath them which causes the oil cap dance. Overall there is slightly more vacuum which keeps the cap in place.
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  4. 02-09-2016 02:42 PM #4
    Stubek
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    screw the oil cap on all the way.
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  5. 02-09-2016 02:46 PM #5
    old guy
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    Quote Originally Posted by Stubek View Post
    screw the oil cap on all the way.
    '03 A4 5-MT Motoza tuned Frankenturbo F21L With full supporting mods. Sold (and missed dearly).
    '13 A5 6-MT Needs more Fun Stuff: Neuspeed PM / 3.0 TDI Intercooler / H&R OE Sport Springs / Bilstein B8 Shocks / TyrolSport Brake Stiffeners / ECS Short Shifter / S5 Side Skirts / RS Grille
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  6. 02-09-2016 02:58 PM #6
    redline380
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    I once had a TDI that I could have dried my hair with the air coming out of the oil cap.

    Some dancing around is expected, but too much is bad.
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  7. 02-09-2016 04:27 PM #7
    yasiu_k
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    Quote Originally Posted by Stubek View Post
    screw the oil cap on all the way.
    Thank you for info:)

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  8. 02-09-2016 04:39 PM #8
    Stubek
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    Quote Originally Posted by yasiu_k View Post
    Thank you for info:)
    I'm a little serious. If the oil cap is not screwed on, it makes sense for that to be happening as stated above with the air displacement that should be happening. From your original post, I can't tell if you just set the oil cap on there to see what would happen or if you opened your hood while the engine was running and found it like that.
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  9. 02-09-2016 04:47 PM #9
    yasiu_k
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    I just set it up for video. When I had old car (Deawoo Nexia) few years ago, I heard that - there is a problem with pistons rings (maybe it is just a myth ) and they don't holds compression, but my car runs fine. Just want to know and ask you guys with more experience audio cars.

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