I do have a Propex, propane and enough cabin battery to power it for a
while. The filter on the upper left is the fuel filter that I relocated to
the engine compartment so it would be easier to change.

I have never resealed the gas tank or done anything with the overflow
bottles. I've never even noticed overflow bottles. They are in the rear
wheel wells? (This is a syncro).

-Mark

On Sat, Dec 23, 2017 at 5:16 PM, <stuartmacm@gmail.com> wrote:

> I hope you have a Propex!  What is that filter on the upper left for?
> Your symptoms are indicative of a fuel problem, which would include water
> in the tank.  Have you ever resealed the tank? That includes the overflow
> bottles in the wheel wells, they can crack from road debris and the grommet
> on top can fail.
>
> Merry Christmas!
>
> Stuart
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
> Of Mark McCulley
> Sent: Saturday, December 23, 2017 4:00 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: occasional hesitation
>
> Thanks everyone for the suggestions. The engine was covered with a layer
> of windblown snow when I opened the hatch:
> https://photos.app.goo.gl/PVZnD0hrPiisjhWH2
>
> I checked the TPS, it was good, and measured the voltage from the OXS as
> 0.43V with the key on.
>
> Reseated the TPS and AFM connectors. Got a bottle of Iso-Heet and poured
> it into the gas tank.
>
> I've driven about 5 miles with no incidents of hesitation. Water in the
> gas sound plausible, the trouble started immediately after fueling up in
> Missoula. Keeping fingers crossed, heading into Yellowstone Park tomorrow.
>
> -Mark
>
>
>
> On Sat, Dec 23, 2017 at 8:45 AM, Mark McCulley <mark.mcculley@gmail.com>
> wrote:
>
> > I'm on a road trip for the holidays, van has been mostly running great
> > but have had some intermittent episodes of roughness. Hoping to get
> > some suggestions for things to check when I have an opportunity to do
> > so (single digit temps today, no garage).
> >
> > First noticed on beginning of second day, leaving Missoula, just a
> > couple of hesitations when accelerating onto the freeway on ramp. As
> > long as I was holding at steady cruising speed, very smooth but if I
> > let off the gas for any reason, then hesitations again.
> >
> > I noticed the symptons again yesterday, this time mostly when changing
> > gears. Smells like it's running rich. Come to think of it I noticed
> > that smell a few weeks before setting out, well before I noticed any
> > hesitations.
> >
> > - The first thing that comes to mind is the TPS, I will check that.
> > - I have spare distributor cap and rotor, but only 7K miles on the
> > existing ones.
> > - I have spare plugs, 17K on the existing ones (W7DTC). Inspected 7K
> > miles ago and looked fine.
> > - I have the AFM harness with the capacitor, and have never had a
> > problem with Vanagon syndrome.
> >
> > It probably wouldn't hurt to change all those ignition components...
> >
> > I'm a bit suspicious of the O2 sensor, is there an easy way to confirm
> > if it's OK? What does ECU do when O2 sensor is unplugged?
> >
> > Thanks in advance for any suggestions.
> >
> > -Mark
> > 87 syncro Westy
> >
>
>