Date:         Sun, 16 Sep 2007 18:54:26 -0700
Reply-To:     Brian Jarvinen <brianvwagain@YAHOO.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Brian Jarvinen <brianvwagain@YAHOO.COM>
Subject:      Re: Rich on side, lean the other?
Content-Type: text/plain; charset=iso-8859-1

--- Michael Elliott <camping.elliott@GMAIL.COM> wrote:

> I'm hunting for the reason that Mellow Yellow gets
> about 15% poorer
> mileage than other similar vans. See
>
> http://camping.elliott.googlepages.com/poormileage
>
> to see what I've learned so far about this 1.9L 1984
> auto transmission
> with only 75,000 miles on it.
>
> One oddness I've found is that both plugs on the
> passenger side indicate
> lean condition, while the plugs on driver's side
> indicate rich condition.
> Where could such an asymmetry come from?

the ones on the left side are far more exposed to the
open air than the ones on the right side, nicely
tucked
away under the air box. so on the left side the boots
over the top of the injectors go bad sooner and grit
and moisture can build up and interfere with the
signal to the injector. I taped up the wires to the
injectors on the left (I mean left as you look at the
engine from the rear bumper) completely with
electrical tape, easier than using new boots, and my
mileage went up slightly. when it rained I noticed
a huge drop in mileage and this bit of electrical
tape fixed that. your mileage may vary. sorry,
couldn't
resist. oops, another one.


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