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This a subject has been discussed recently, but I'm not sure I really heard
any useable answers. I have oil coming out of the dip stick and the rear
seal. I sealed the dip stick with felt, but I think that made the real seal
leak worse.
Replacing the PCV value didn't help. Opening the oil filler cap reveals a
lot of air coming out. I don't think that opening the crankcase breather
hole on a PVC controlled engine is the right thing to do since that would
screw around with the vacuum system. I guess I'm looking for a
troubleshooting technique to do a diagnosis of the problem.
How much blow-by is too much? Can it be measured? Does anybody have a spec?
I'm about to run a leak down test to troubleshoot blow-by. How much a % loss
can I expect? How much of a variation between cylinders should be expected?
A compression test show the cylinders as 160-175-175-165, and the difference
between the inner and outer two cylinders concerns me.
Is there something else I should be looking for?
In August I plan to make the 1500 mile trek from San Diego to Breckenridge
and want a car that will make it there and back without leaving a big oil
trail.
Johnnie
'67 TR4A
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<p class=3DMsoNormal>This a subject has been discussed recently, but I'm =
not sure
I really heard any useable answers. I have oil coming out of the dip =
stick and
the rear seal. I sealed the dip stick with felt, but I think that =
made
the real seal leak worse.<o:p></o:p></p>
<p class=3DMsoNormal><o:p> </o:p></p>
<p class=3DMsoNormal>Replacing the PCV value didn’t help. =
Opening the
oil filler cap reveals a lot of air coming out. I don’t think that
opening the crankcase breather hole on a PVC controlled engine is the =
right
thing to do since that would screw around with the vacuum system. =
I guess
I'm looking for a troubleshooting technique to do a diagnosis of the =
problem.<o:p></o:p></p>
<p class=3DMsoNormal><o:p> </o:p></p>
<p class=3DMsoNormal>How much blow-by is too much? Can it be measured? =
Does
anybody have a spec?<o:p></o:p></p>
<p class=3DMsoNormal><o:p> </o:p></p>
<p class=3DMsoNormal>I'm about to run a leak down test to troubleshoot =
blow-by.
How much a % loss can I expect? How much of a variation between =
cylinders
should be expected?<o:p></o:p></p>
<p class=3DMsoNormal><o:p> </o:p></p>
<p class=3DMsoNormal>A compression test show the cylinders as =
160-175-175-165,
and the difference between the inner and outer two cylinders concerns =
me.<o:p></o:p></p>
<p class=3DMsoNormal><o:p> </o:p></p>
<p class=3DMsoNormal>Is there something else I should be looking =
for?<o:p></o:p></p>
<p class=3DMsoNormal><o:p> </o:p></p>
<p class=3DMsoNormal>In August I plan to make the 1500 mile trek from =
San Diego to
Breckenridge and want a car that will make it there and back without =
leaving a
big oil trail.<o:p></o:p></p>
<p class=3DMsoNormal><o:p> </o:p></p>
<p class=3DMsoNormal>Johnnie<o:p></o:p></p>
<p class=3DMsoNormal>'67 TR4A<o:p></o:p></p>
<p class=3DMsoNormal><o:p> </o:p></p>
<p class=3DMsoNormal><o:p> </o:p></p>
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