Date: Mon, 14 Sep 2009 12:24:12 -0400
Reply-To: mcneely4@COX.NET
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Dave Mcneely <mcneely4@COX.NET>
Subject: Re: 1.9ltr vanagon timing help needed.
Content-Type: text/plain; charset=UTF-8; format=flowed; delsp=no
Tony, look up "Vanagon Syndrome" in the various sources you searched.
Many waterboxers exhibit this drivability problem when the Air Flow
Meter is worn. When the wear is relatively minor, the meter can be
adjusted to help, but eventually it needs to be replaced. It's
expensive.
On Mon, Sep 14, 2009 at 11:07 AM , T Collins wrote:
> Hello folks,
>
> I need your help. This is going to be long. So please bear with me. I
> have
> searched our archives and looked elsewhere in the net and I am getting
> many
> different and conflicting information.
>
> So lets begging shall we? This past winter my 1985 vanagon started
> stumbling
> at cruising speed, just a little bit. I changed the fuel filter and
> that
> seem to help. I also noticed some exhaust leaks, but disregarded them.
> At
> the beginning of this summer the van developed a serious bucking and
> stumbling issue. I checked those exhaust leaks to find out that #3
> cylinder
> pipe was had crumbled all the way across. I thought that this would
> certainly have something to do with the stumbling as this leak was a
> giant
> crater before the O2 sensor. The J pipe also had a whole as well as
> the
> muffler. I have since ruled out the exhaust. All the pipes are in
> place
> there is no leak to be found in the back end. Yet the issue continues.
>
> I figured timing then is the culprit. Distributor cap, rotor and plugs
> have
> been changed. I have looked at all the information on timing for the
> 1.9
> starting with the bently (which looks like Greek to me) to a number of
> answer in the archives, to a vanagain news letter. I followed many of
> these
> and yet el guapo does not run under load worth a poop.
>
> I looked at my crank pulley closest to the block, there is V notch on
> it. I
> think that is TDC. On the rear pulley (closest to back of van) There
> is
> another notch this is one is a U shape and it is to the right of the V
> shaped one. Here is where I need clarification #1, is this 5* after
> top dead
> center ATDC?
>
> When I set the timing I make sure that I get the rotor, notch in the
> distributor and V notch all lined up TDC to cyl #1 to set this timing
> mark
> and the van does not run appropriately. I have also tried setting to
> the
> 5*ATDC and that is just as bad. Come to think of it both in both
> settings
> the marks seem to dance a bit not being constant. On road test it
> bucks,
> stumbles and cuts off. Can someone clarify the right timing to use.
>
> I am using a timing light without any features to it. I get my Pos
> from the
> alternator, my negative from the tranny bolt, and my signal from the
> wire to
> cyl #1.
>
> I have disconnected the idle stabilizer and plug the 2 connectors,
> also
> setting iddle with the adjustment screw using the tach as my
> guideline. I
> know that is not perfect, but I am sure that I am at 850 rpm + or - 50
> rpm.
>
> I have read information that suggest that timing should be done at
> 15-17
> BTDC is this right? I have not tried this yet.
>
> Before there are suggestion that this is an AFM problem, I have tried
> 3
> including one that is known good or new. Something tells me that I
> need to
> get this timing right before I can move (no pun intended) forward.
>
> I know I am wordy, but I am trying to paint the whole picture. I
> welcome
> information from those of you who may have experienced this set of
> issues
> and had success solving it.
>
> Thanks,
> Tony
> --
> 82 Scirocco "Rodolfo"
> 85 Vanagon "El Guapo"
> 90 Fuji Ace
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