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Re: Defective dipstick 1998 Avalon
"Fishface" <invalid@ddress.ok?> wrote in message
news:ogZwf.34168$uy3.3313@trnddc08...[color=blue]
> Philip wrote:
>[color=green]
>> WHY? What does that have to do with how oil finds its way to the oil
>> pan?[/color]
>
> I was alluding to the possibility of pressure blowing oil up the tube.
> I just found this with a quick search:
> [url]http://www.answerbag.com/a_view.php/4634[/url]
>[/color]
Thank you. The above link should be withdrawn because it is flawed.
A clogged PCV by itself will not cause the crankcase to pressurize. Why?
Because all positive crankcase ventilation systems ALSO have a fresh air
inlet (breather) at a port located between the air filter housing and the
throttle body. So for pressure to build, both this fresh air inlet AND the
PCV would have to be clogged.
Next, with the engine stopped and having allowed to sit for a couple of
minutes, there will be no pressure in the crankcase even with both PCV and
"breather" clogged. So, there will be no pressurized oil traveling
(blowing) up the dipstick tube.
Considering the OP's car is a V6 Toyota engine ... one of those often abused
with oil changes at intervals inappropriate to the operating conditions, it
might be sludged. This special consideration would prompt me to pull off a
valve cover and inspect for sludge .... sludge that might also be present in
the lower end of the dipstick tube. If this is the case, the OP has a much
larger issue at hand. :^(
-Philip
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