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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">
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<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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