Date:         Wed, 4 Apr 2007 09:21:17 -0700
Reply-To:     Mark Keller <kelphoto@TELUS.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Mark Keller <kelphoto@TELUS.NET>
Subject:      Re: o2 sensor voltage
Comments: To: Shawn Fowler <sgf1388@yahoo.com>
In-Reply-To:  <491612.99965.qm@web56101.mail.re3.yahoo.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Hi Shawn,

Well, don't feel timing is the issue if it runs on two.  Remeber that
the non- firing cylinders are creating a false rich signal, so the
computer is leaning out the mixtur,e which means the firing cylinders
are not getting enough fuel.

What you do is to remove a distubtor wire from each cylinder at idle and
note which two have the LEAST effect on the idle and Which Two have The
MOST effect on idle.  Most effect are the good cylinders, least effect
are the bad cylinders.  Recheck the compression on the bad cylinders .

Other causes for misfire, crossed spark plug wires.  Remember that the
waterboxer cylinder number scheme is  front to rear and right to left,
so front right is #1, Rear Right #2 Left front #3 and Left Rear #4.
Front being toward the front of the van etc.

Second cause could be a bad injector situation.  Plugged injectors more
than not working since you have gas.  Plugged like a shower head that
dosent' send a correct pattern, just dribbles. you get the idea.
Dribble gas droplets are too large and cylinder fouls easy.

Mark


Shawn Fowler wrote:

> My suspicion is that I am running rich- blackish smoke, carbon
> deposits on the plugs, when I was compression testing I had some gas
> on the left two plugs.
>
> At idle the bus is not really firing on two of the cylinders. I have
> all new plugs, wires, cap and rotor. The spark seemed strong.
>
> Do you feel that timing could be a possibility?
>
> Shawn
>
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