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re: "Some did say they say a "little black smoke, occasionally"."
That would indicate a rich mixture; if so, some unburned gas might be
getting past the rings and diluting the oil, making it even thinner.Â
Certainly, a compression test is called-for.
On 9/17/2019 7:48 AM, warthodson@aol.com wrote:
> Bob,
> The owner is aware of the issues with oil & I think he is using 20w/50
> Castrol synthetic oil. I will confirm at the meeting. On the trip to
> Conclave no one noticed any thing unusual about his exhaust. Some did
> say they say a "little black smoke, occasionally". I will be
> interested in seeing the plugs. If not rings, how else could oil be
> getting into the combustion chamber?
> Perhaps the valve stems could be leaking. How could we test for this?
> How about valve stem seals leaking?
> Gary H
>
> -----Original Message-----
> From: Bob Spidell <bspidell@comcast.net>
> To: healeys <healeys@autox.team.net>
> Sent: Tue, Sep 17, 2019 9:22 am
> Subject: Re: [Healeys] high oil consumption
>
> What brand/viscosity oil is he using?
>
> If it really isn't leaking it can only be burning it; I'd expect quite
> a bit of blue smoke out the tailpipe. My BJ8's engine was rebuilt a
> couple years ago and uses some, less than this one, but isn't leaking
> it--I was under it yesterday--and I only get a little blue smoke after
> a long downhill run in gear.
>
> Bob
>
> On 9/17/2019 7:16 AM, warthodson--- via Healeys wrote:
> Our local AH club will be checking a BJ8 for high oil consumption this
> weekend. He says it is not leaking out. We will verify that when we
> inspect it.
> He added 8 quarts of oil on the round trip to Conclave recently (2100
> miles total). The engine was professionally rebuilt in 2011. The
> engine builder has recently retired & moved to a Caribbean island so
> we cannot contact him, true story.
> In 2012 he used 6 quarts of oil on a 5000 mile trip. About 2-3 years
> ago I checked the compression, performed a leak down test & inspected
> the spark plugs. Every thing was in the normal range.
> My question is: If the engine passes all the usual tests this weekend,
> what are some of the unusual ways you have come across that could
> cause high oil consumption & how would we test for them?
>
> Gary Hodson
>
>
>
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re: "Some did say they say a "little black smoke, occasionally"."<br>
<br>
That would indicate a rich mixture; if so, some unburned gas might
be getting past the rings and diluting the oil, making it even
thinner. Certainly, a compression test is called-for.<br>
<br>
<div class="moz-cite-prefix">On 9/17/2019 7:48 AM,
<a class="moz-txt-link-abbreviated"
href="mailto:warthodson@aol.com";>warthodson@aol.com</a> wrote:<br>
</div>
<blockquote type="cite"
cite="mid:1267253349.8561914.1568731699962@mail.yahoo.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div style="color:black;font: 10pt arial;">
<div>Bob, </div>
<div>The owner is aware of the issues with oil & I think he
is using 20w/50 Castrol synthetic oil. I will confirm at the
meeting. On the trip to Conclave no one noticed any thing
unusual about his exhaust. Some did say they say a "little
black smoke, occasionally". I will be interested in seeing the
plugs. If not rings, how else could oil be getting into the
combustion chamber? </div>
<div>Perhaps the valve stems could be leaking. How could we test
for this? How about valve stem seals leaking?</div>
<div>Gary H</div>
<br>
<div
style="font-family:arial,helvetica;font-size:10pt;color:black">-----Original
Message-----<br>
From: Bob Spidell <a class="moz-txt-link-rfc2396E"
href="mailto:bspidell@comcast.net";><bspidell@comcast.net></a><br>
To: healeys <a class="moz-txt-link-rfc2396E"
href="mailto:healeys@autox.team.net";><healeys@autox.team.net></a><br>
Sent: Tue, Sep 17, 2019 9:22 am<br>
Subject: Re: [Healeys] high oil consumption<br>
<br>
<div id="yiv2063336109">
<div> What brand/viscosity oil is he using?<br clear="none">
<br clear="none">
If it really isn't leaking it can only be burning it; I'd
expect quite a bit of blue smoke out the tailpipe. My
BJ8's engine was rebuilt a couple years ago and uses some,
less than this one, but isn't leaking it--I was under it
yesterday--and I only get a little blue smoke after a long
downhill run in gear.<br clear="none">
<br clear="none">
Bob<br clear="none">
<br clear="none">
<div class="yiv2063336109yqt5570454359"
id="yiv2063336109yqt19901">
<div class="yiv2063336109moz-cite-prefix">On 9/17/2019
7:16 AM, warthodson--- via Healeys wrote:<br
clear="none">
</div>
<blockquote type="cite"> </blockquote>
</div>
</div>
<div class="yiv2063336109yqt5570454359"
id="yiv2063336109yqt46831">
<div>
<div style="color:black;font:10pt arial;">
<div>Our local AH club will be checking a BJ8 for high
oil consumption this weekend. He says it is not
leaking out. We will verify that when we inspect
it. </div>
<div>He added 8 quarts of oil on the round trip to
Conclave recently (2100 miles total). The engine was
professionally rebuilt in 2011. The engine builder
has recently retired & moved to a Caribbean
island so we cannot contact him, true story.</div>
<div>In 2012 he used 6 quarts of oil on a 5000 mile
trip. About 2-3 years ago I checked the compression,
performed a leak down test & inspected the spark
plugs. Every thing was in the normal range.</div>
<div>My question is: If the engine passes all the
usual tests this weekend, what are some of the
unusual ways you have come across that could cause
high oil consumption & how would we test for
them? </div>
<div><br clear="none">
</div>
<div>Gary Hodson</div>
</div>
<br clear="none">
<br clear="none">
</div>
</div>
</div>
<br>
</div>
</div>
</blockquote>
<br>
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