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I would check the crankcase ventilation first. Dismantle and see if it
is blocked or dirty. Clean or renew and refit.
On some of the cars there is a diaphragm in the crankcase ventilation
system fitted between valve cover and inlet manifold under a spring
loaded disc that you can remove. Perhaps the diaphragm is split.
Also check the accuracy of the dipstick. If an engine is overfilled with
oil it will often consume a fair bit of oil until the oil level is normal.
If the car emits blue smoke continuously when accelerating hard: worn
rings/pistons/bores.
If the car emits blue smoke momentarily when accelerating after
decelerating on the engine: worn valve guides or seals.
Kees Oudesluijs
Op 17-9-2019 om 16:16 schreef warthodson--- via Healeys:
> 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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<p>I would check the crankcase ventilation first. Dismantle and see
if it is blocked or dirty. Clean or renew and refit. <br>
</p>
<p>On some of the cars there is a diaphragm in the crankcase
ventilation system fitted between valve cover and inlet manifold
under a spring loaded disc that you can remove. Perhaps the
diaphragm is split.<br>
</p>
<p>Also check the accuracy of the dipstick. If an engine is
overfilled with oil it will often consume a fair bit of oil until
the oil level is normal. <br>
</p>
<p>If the car emits blue smoke continuously when accelerating hard:
worn rings/pistons/bores.</p>
<p>If the car emits blue smoke momentarily when accelerating after
decelerating on the engine: worn valve guides or seals.</p>
<p>Kees Oudesluijs<br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">Op 17-9-2019 om 16:16 schreef
warthodson--- via Healeys:<br>
</div>
<blockquote type="cite"
cite="mid:1547462291.8587656.1568729776429@mail.yahoo.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<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>
</div>
<div>Gary Hodson</div>
</div>
<br>
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