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Re: Valve noise and oil/filters
Here's something interesting I found in rec.autos.tech relevant to the
topic of valve noise and oil filters:
In article <1992Oct30.firstname.lastname@example.org> email@example.com (David Hinz Mfg 4-6987) writes:
>Michael Sutton P025 (firstname.lastname@example.org) 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
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
>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,
I'll concur on this...
In article <1992Oct30.email@example.com> firstname.lastname@example.org (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 (email@example.com) - Infinity Development Systems - Waltham, MA