Re: Valve noise and oil/filters

[zm@mhcnet.att.com]

Here's something interesting I found in rec.autos.tech relevant to the
topic of valve noise and oil filters:

Zafer
zm@mhcnet.att.com
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In article <1992Oct30.072120.21493@mr.med.ge.com> hinz@picard.med.ge.com (David Hinz Mfg 4-6987) writes:
>Michael Sutton P025 (mjsutton@bnr.ca) wrote:
>: I have a 90 grand caravan with a 3.3 chrysler engine with 40K miles.
 
>: Also when the engine is running I hear a clicking sound that sounds like
>: valve noise.
 
>: If anyone has experience with this model van that may have reasons for
>: these noises please post a reply.
 
 
>: Mike Sutton

>First, get rid of the cheap oil filter without a anti drain-back valve.
>Pay the bucks & buy OEM or better.  Most likely, the oil is all draining out of
>the filter overnight, and the pump has to fill it back up before starting on the 
>engine.

hmmmmmmm, unless I'm grossly mistaken (which *ain't* likely on a Chrysler
issue... ;-) ), the filter mounts roughly 'base-up'... so the much-talked-about
'mystical anti-drainback-valve' isn't likely an issue.  as a minimum, however,
use the Fram filter specified for this application (probably PH16).

don't forget that 'anti-drain-back' really can't be an issue unless the filter
mounts 'base-down' without a stand-pipe in the mounting base (remember the
slant-six...).

>As to the valve noise, it could be the fuel injectors, don't let them confuse
>you, as sometimes they sound similar and this is normal (for Bosch injectors,
>anyways)

I'll concur on this...

Walt K.

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In article <1992Oct30.132120.2272@nosc.mil> koziarz@halibut.nosc.mil (Walter A. Koziarz) writes:

>hmmmmmmm, unless I'm grossly mistaken (which *ain't* likely on a Chrysler
>issue... ;-) ), the filter mounts roughly 'base-up'... so the much-talked-about
>'mystical anti-drainback-valve' isn't likely an issue.  as a minimum, however,
>use the Fram filter specified for this application (probably PH16).

I want to give an actual data point here, though it's on a SAAB
engine, not a Chrysler.  My 900 turbo's oil filter mounts ``base-up''
too, but this does not make the anti-drainback valve irrelevant.  I've
used both the OEM Mann filters and the Fram equivalents, and I get
several seconds of hydraulic lifter clatter upon cold startup with the
Fram.  I get maybe 1/4 second of clatter with the Mann filter.  Since
this would also seem to mean that my turbo is getting starved for
lubrication at startup as well, I broke down and spent the $$$ for a
couple cases of the OEM filters.  Actually, I paid dealer price: only
$4 apiece, which wound up being about the same as the Fram!
-- 
Andrew Evans (andrew@airs.com) - Infinity Development Systems - Waltham, MA