Gasket sucked in... | FerrariChat
Buy

Gasket sucked in...

Discussion in '360/430' started by Jagbuff, Apr 27, 2011.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, Skimlinks, and others.

  1. Jagbuff

    Jagbuff Formula 3

    Jan 13, 2004
    2,267
    Site of US F1 Race!
    Full Name:
    Franck
    #1 Jagbuff, Apr 27, 2011
    Last edited by a moderator: Sep 7, 2017
    I have had a ongoing CEL problem (P0300) and a hunting idle which points to a vacuum leak. Since I removed the injectors for cleaning and calibration (amongst many other things), I was able to get a closer look at the intake runners gaskets. While I couldn't identify any obvious leaks, there was some oil around the runner to Cyl 4. I decided to pull the intake and see if any gaskets had been sucked in as other owners have experienced... well the verdict after a couple hours of fun is pictured below.

    Based on what others have reported, it would appear that if the gaskets get oily there is an increased risk of them failing, I am curious how often this happens...
    Image Unavailable, Please Login
     
  2. tazandjan

    tazandjan Three Time F1 World Champ
    Lifetime Rossa Owner

    Jul 19, 2008
    39,166
    Clarksville, Tennessee
    Full Name:
    Terry H Phillips
    #2 tazandjan, Apr 27, 2011
    Frenchie- I do not know about the CS, but the Maranello intake manifolds have a way of working loose and need to be retorqued periodically. Wonder if it was a combination of loose and wet?

    Taz
    Terry Phillips
     
  3. TheMayor

    TheMayor Ten Time F1 World Champ
    Rossa Subscribed

    Feb 11, 2008
    106,112
    Vegas baby
    #3 TheMayor, Apr 27, 2011
    If the gasket breaks down from oil or some other contamination, I can see this happening. It's just about impossible to do it to a gasket in good shape that is properly tightened. But, with a damaged gasket and that much vaccum, I can see it.

    That leak must have been there for some time. I would think it take a while for the gasket to get completely saturated through and break down.

    Luckily you found it and the damage is non-existent.
     
  4. TheMayor

    TheMayor Ten Time F1 World Champ
    Rossa Subscribed

    Feb 11, 2008
    106,112
    Vegas baby
    #4 TheMayor, Apr 27, 2011
    Last edited: Apr 27, 2011
    I was thinking the same thing. But, he didn't mention them being loose. If the paper absorbs the oil, I can see it breaking down just like it would in water.

    You can see pretty clearly from the photo that the valve cover gasket was leaking right on top of the intake gasket.
     
  5. Jagbuff

    Jagbuff Formula 3

    Jan 13, 2004
    2,267
    Site of US F1 Race!
    Full Name:
    Franck
    #5 Jagbuff, Apr 28, 2011
    The intake was tight, as for the oil, I do not believe valve cover gasket is seeping oil as the major was done 1000 miles ago (could have been before - though gravity would prevent extensive seepage). The other clue is a significant amount of oil in the manifold and the runners which could be from blow by (doubtful) or someone overfilling (common). BTW all the other runners looked dry from the outside, yet when I pulled the intake off, the gaskets were well impregnated with oil.

    So I am guessing that over time oil finds it way down the runners, gets absorbed by the gasket which breaks them down to the point where they can get sucked in.... overfilling probably aggravates.
     
  6. Ricambi America

    Ricambi America F1 World Champ
    Sponsor Owner

    Dec 7, 2003
    16,448
    Winston Salem, NC
    #6 Ricambi America, Apr 28, 2011
    Last edited: Apr 28, 2011
    I'm not smart enough to understand why... but on the 575 (and I think the 458 Italia), those intake runner gaskets have switched from paper to aluminum.

    p.s. the aluminum ones are also retroactive back into the 550 and forward to the 612
     
  7. F430addict

    F430addict F1 Rookie

    Sep 17, 2010
    4,460
    #7 F430addict, Apr 28, 2011
    Interesting bit of trivia there...
     

Share This Page