[Healeys] excess oil consumption

Thu Jul 9 09:59:06 MDT 2015

Should it be dry? I adjusted my valves and oil bubbled up, not squirted.
The rear flange on my valve cover was flat and the gasket was not glued
down. I had a lot of oil leaking out the back of the Cover. Need to get in
a replace the cover and right stuff the gasket to see if that helps. I have
maybe 60k miles over the last 40 years.

Mr. Ira Erbs
On Jul 9, 2015 6:24 PM, "David Nock" <healeydoc at gmail.com> wrote:

>   If you install the PCV kit on a car that has a worn rocker assy and
> using lots of oil the PCV kit will make it worse.
> Like I said earlier pull the rocker cover you will find that the rebuilder
> installed the worn out rocker assy. The oil will be squirting way to high
> and causing your problem.
>
> The other way to check is just fell the bottom of the rear filter it will
> be soaked with oil.
>
> One test you can do is remove the vent hose to the rear filter and see if
> the problem goes away.
>
> The PCV kit will help stop oil loss due to seal leaks not a worn our
> rocker assy.
>
>
> David Nock
> healeydoc at sbcglobal.net
> 209 948 8767
> www.britishcarspecialists.com
>
>  *From:* Bob Spidell <bspidell at comcast.net>
> *Sent:* Thursday, July 09, 2015 5:47 AM
> *To:* healeys at autox.team.net
> *Subject:* Re: [Healeys] excess oil consumption
>
> I've had a PCV valve installed--the 'Nock Kit'--on my BJ8 for years; maybe
> 40K miles or more.  It reduced oil consumption from 1qt/1,500 miles to
> 1qt/3,500 miles or so (highway miles, consumption is a bit more for
> around-town miles).  There is no downside that I know of; others have
> reported gunk on the rear intake valves.  I'm contemplating an engine
> rebuild; will find out then.
>
> I think 6qts/4,000 miles is way too much for a freshly rebuilt engine.
> Your friend could remove the vacuum dashpots--the big dome on the
> carbs--and check for oil residue.  If the rear is worse than the front carb
> it would confirm oil is getting sucked into the rear carb.  Does he have
> any leakage around the valve cover?  That would indicate the crankcase is
> getting pressurized.  Is he dripping a lot of oil?  Is it leaking from the
> timing cover seal?
>
> Bob
>
> On 7/9/2015 3:59 AM, Mitch Simmons wrote:
>
> 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 at chello.nl> wrote:
>
>  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.
>
> ^qwarthodson at aol.com schreef op 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 – 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 don’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 – I don’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 “solution” that worked for them?  Maybe there are
> other thoughts that we should ask my mechanic to examine as well.
>
>
>
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