Re: [Healeys] excess oil consumption

[Oudesluys <coudesluijs@chello.nl>]

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You cannot create too much vacuum through the air filters. If the 
pressure in the crank case is to high or oil is directly sprayed onto 
the oil separator near the PVC valve oil mist may be delivered into the 
airfilter. But then there is something wrong with the engine: worn 
bores/pistons/rings or worn rockershaft bearings.

Kees Oudesluijs


Team.net schreef op 9-7-2015 om 13:22:
> I have one and it stopped all oil leaks; seems to be perfectly fine
>
>
>
> On Jul 9, 2015, at 6:59 AM, Mitch Simmons <Dayton21@comcast.net 
>
>> If u have a pcv installed as per the Nock s version. What are the 
>> negatives? will it suck oil into the intake? Could there be too much 
>> vacuum and harm seals gaskets etc. ?? Mitch. 66 bj8
>>
>> Sent from my iPhone
>>
>> On Jul 8, 2015, at 2:36 AM, Oudesluys <coudesluijs@chello.nl 
>>
>>> 6 quarts over 4000mls does not sound to bad for an old design 
>>> British engine. It also depends how the rebuild was done.
>>> The main reasons for oil consumption, apart from leaking, are wear 
>>> of bores/pistons/rings, valve guide wear and blocked/dirty crank 
>>> case breathing system.
>>> Check and clean the crankcase ventilation system first. Check for 
>>> wear in the valve guides. Check the compression with a hot engine.
>>> That the engine was professionally rebuild does not mean anything, 
>>> it depends who has done the job. It is also peculiar that after a 
>>> rebuild a few years ago, a ring job was needed not so long ago!!!!!?????
>>>
>>> Kees Oudesluijs
>>>
>>> It is very unlikely that the air filters have something to do with 
>>> the oil consumption. There is no vacuum to speak of created there, 
>>> unless they are totally blocked or are absolutely tiny.
>>>
>>> 8-7-2015 om 1:55:
>>>> A friend ask me to post the following question about excess oil 
>>>> consumption on this forum to see if anyone has any suggestions.
>>>> I know the engine has been professionally rebuilt a few years ago & 
>>>> the compression & leak down tests recently looked "normal". No oil 
>>>> leaks.
>>>> Thanks,
>>>> Gary Hodson
>>>> I had a brief conversation with my mechanic the other day and in 
>>>> the next couple of weeks he will do a complete diagnosis on my 
>>>> Healey to try to identify why I have had so much oil consumption.  
>>>> FYI, I just emptied the 6^th quart of oil into the engine yesterday 
>>>> â?? and that is over 4,000 miles.  It is better than before the 
>>>> recent ring job, but nonetheless, is not acceptable to me.
>>>> Mechanic thinks the oil loss might be due to combustion of the oil 
>>>> from the back air cleaner that is plumbed with the valve cover. 
>>>> He thinks the air cleaner I have on it now is somehow creating a 
>>>> vacuum pulling oil from the valve cover and injecting it back into 
>>>> the piston and is actually burning the oil off very efficiently.  I 
>>>> still donâ??t have any signs of leaks beneath the car nor any smoke 
>>>> from the tailpipe.  Quite possibly the current Cooper air cleaners 
>>>> are too small and are creating this vacuum.  The Cooper air 
>>>> cleaners replaced some other chrome air cleaners the original owner 
>>>> had on the car â?? I donâ??t know if it was original equipment.
>>>> Will you do me a favor and see if anyone else had a similar issue 
>>>> with oil consumption to identify a â??solutionâ?? that worked for 
>>>> them?  Maybe there are other thoughts that we should ask my 
>>>> mechanic to examine as well.
>>>>
>>>>
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>>>
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    <div class="moz-cite-prefix">You cannot create too much vacuum
      through the air filters. If the pressure in the crank case is to
      high or oil is directly sprayed onto the oil separator near the
      PVC valve oil mist may be delivered into the airfilter. But then
      there is something wrong with the engine: worn bores/pistons/rings
      or worn rockershaft bearings.<br>
      <br>
      Kees Oudesluijs<br>
      <br>
      <br>
      Team.net schreef op 9-7-2015 om 13:22:<br>
    </div>
    <blockquote
      cite="mid:B8786E86-E266-4196-A210-47CCE16B1442@gmail.com"
      type="cite">
      <meta http-equiv="Context-Type" content="text/html; charset=utf-8">
      <div>I have one and it stopped all oil leaks; seems to be
        perfectly fine<br>
        <br>
        <br>
      </div>
      <div><br>
        On Jul 9, 2015, at 6:59 AM, Mitch Simmons &lt;<a
          moz-do-not-send="true" 
href="mailto:Dayton21@comcast.net";>Dayton21@comcast.net</a>&gt;
        wrote:<br>
        <br>
      </div>
      <blockquote type="cite">
        <div>
          <div>If u have a pcv installed as per the Nock s version. What
            are the negatives? will it suck oil into the intake? Could
            there be too much vacuum and harm seals gaskets etc. ?? Â  Â 
            Mitch. 66 bj8<br>
            <br>
            Sent from my iPhone</div>
          <div><br>
            On Jul 8, 2015, at 2:36 AM, Oudesluys &lt;<a
              moz-do-not-send="true" 
href="mailto:coudesluijs@chello.nl";>coudesluijs@chello.nl</a>&gt;
            wrote:<br>
            <br>
          </div>
          <blockquote type="cite">
            <div>
              <div class="moz-cite-prefix">6 quarts over 4000mls does
                not sound to bad for an old design British engine. It
                also depends how the rebuild was done.<br>
                The main reasons for oil consumption, apart from
                leaking, are wear of bores/pistons/rings, valve guide
                wear and blocked/dirty crank case breathing system.<br>
                Check and clean the crankcase ventilation system first.
                Check for wear in the valve guides. Check the
                compression with a hot engine. <br>
                That the engine was professionally rebuild does not mean
                anything, it depends who has done the job. It is also
                peculiar that after a rebuild a few years ago, a ring
                job was needed not so long ago!!!!!?????<br>
                <br>
                Kees Oudesluijs<br>
                Â <br>
                It is very unlikely that the air filters have something
                to do with the oil consumption. There is no vacuum to
                speak of created there, unless they are totally blocked
                or are absolutely tiny. <br>
                <br>
                ^<a moz-do-not-send="true"
                  href="mailto:qwarthodson@aol.com";>qwarthodson@aol.com</a>
                schreef op 8-7-2015 om 1:55:<br>
              </div>
              <blockquote
                cite="mid:14e6af290e3-de4-413c4@webprd-m69.mail.aol.com"
                type="cite">
                <div class="MsoNormal">A friend ask me to post the
                  following question about excess oil consumption on
                  this forum to see if anyone has any suggestions.</div>
                <div class="MsoNormal">I know the engine has been
                  professionally rebuilt a few years ago &amp; the
                  compression &amp; leak down tests recently looked
                  "normal". No oil leaks. </div>
                <div class="MsoNormal">Thanks,</div>
                <div class="MsoNormal">Gary Hodson</div>
                <div class="MsoNormal">Â </div>
                <div class="MsoNormal">I had a brief conversation with
                  my mechanic the other day and in the next couple of
                  weeks he will do a complete diagnosis on my Healey to
                  try to identify why I have had so much oil
                  consumption.  FYI, I just emptied the 6<sup>th</sup>
                  quart of oil into the engine yesterday â?? and that is
                  over 4,000 miles.  It is better than before the recent
                  ring job, but nonetheless, is not acceptable to me.</div>
                <div class="MsoNormal">Â </div>
                <div class="MsoNormal">Mechanic thinks the oil loss
                  might be due to combustion of the oil from the back
                  air cleaner that is plumbed with the valve cover. 
                  He thinks the air cleaner I have on it now is somehow
                  creating a vacuum pulling oil from the valve cover and
                  injecting it back into the piston and is actually
                  burning the oil off very efficiently.  I still donâ??t
                  have any signs of leaks beneath the car nor any smoke
                  from the tailpipe.  Quite possibly the current Cooper
                  air cleaners are too small and are creating this
                  vacuum.  The Cooper air cleaners replaced some other
                  chrome air cleaners the original owner had on the car
                  â?? I donâ??t know if it was original equipment.</div>
                <div class="MsoNormal">Â </div>
                <div class="MsoNormal">Will you do me a favor and see if
                  anyone else had a similar issue with oil consumption
                  to identify a â??solutionâ?? that worked for them?  Maybe
                  there are other thoughts that we should ask my
                  mechanic to examine as well.</div>
                <div class="MsoNormal">Â </div>
                <br>
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