> > How would this filter reduce emissions? I've seen the test stands that show
> > how air flows better through a K&N air filter but I don't think that they
> > will remove as small of particles as a normal filter. Is this true? >
> Scott, we're having a bit of fun at the expense of the poster who
> mentioned that soaking an air filter with washer solvent (methanol)
> might reduce NOx. I tend to disagree in that any change in a closed
> loop circa '89 Toyota EFI or carb system (again, God forbid a usenet
> post include pertinent data, as a result we don't know the engine or
> fuel management system) would be so miniscule as to be indeterminable
> from test equipment error allowances. 2954 ppm NOx is a SERIOUS
> OBVIOUS problem that no doubt can be easily diagnosed by any real
> mechanic in short order. My mention of a K&N filter goes out to those
> who like to brag about 5 pretend horsepower from their new $50 gauze
> filter at the expense of actual *filtering* ability.
>
> > Someone mentioned oiling the filter. These need to be oiled? The filters on
> > the test stand are not oiled. How does oiling affect the air flow through
> > the filter?
>
> I don't know what test stand you are referring to, but K&N
> specifically recommends applying oil sparingly to the filter every
> time you clean/service their POS filter. The oil is what traps some
> of the airborne particulates.
>
> Toyota MDT in MO
>
>
> > > > > > > > > > > > >> > > > > > >> > > My 89 Toyota pickup recently failed emission test for high NOx > > (1483
> > > > >> > > std reading 2954).
> > > > >> > > I checked out the egr system as per the service manual and didn't > > find
> > > > >> > > anything wrong.. I changed plugs, cap, rotor, wires, pcv, air > > filter
> > > > >> > > about 20K miles ago and the truck rund fine.
> > > > >> > > I did however have to wait over an hour in the line and had the > > engine
> > > > >> > > shut off. By the time I got to the emissions test, the engine was
> > > > >> > > pretty cold. Could this have caused this?
> > > > >> > > Thanks for comments.
>
> > > > >> > Did I miss your engine size and trans somewhere in the post? >
> > > > >> > You've received one correct reply so far.
>
> > > > >> That would be the one about spraying washer fluid on your filter, > > Right?
>
> > > > > Yes, of course! The poster said "They put washer fluid on there
> > > > > filter just before going into get
> > > > > it checked, apparently this reduces NOX by a few points." With 3
> > > > > 'points'
> > > > > out of the way, it should be cake to reduce the next 1468 points
> > > > > simply using proper diagnostic and repair methods.
>
> > > > Oh, you're just being cynical. With a premium washer fluid you should be
> > > > able to get seven or eight points.
>
> > > I suppose it wouldn't hurt to use a K&N filter too....
>
> > > Toyota MDT in MO- Hide quoted text -
Just thought you would like to know. I won't stand by it never tested it, but if people who loose by a few points may want to try it.