If you don't have a practical way to check the fuel delivery rate, just try
replacing the fuel filter.

Larry A.

On Thu, May 22, 2008 at 1:08 PM, Poppie Jagersand <poppie.jagersand@yahoo.ca>
wrote:

> Hi,
>
>  I am having trouble with the '85 Westy my wife and I have in Europe.
>  We came here and picked it up in Munchen, but only got to the border
>  of France when trouble started. We are currently in a small village in
> Alsace.
>
>  While driving the 1.9l wasserboxer first lost power and backfired on
>  steep uphills, then shortly started loosing power at any time, until
>  we had to creep off the highway on idle until the next exit.
>
>  We luckily ended up at a supermarket with some limited auto supplies.
>  During the day today I tried:
>
>  Measured resistances on airflow meter. Both temp sender and airflow
>  checks ok. Temp sender is 2kohm. For the air flow the resistance is
> varying
>  when pushed as expected.
>
>  The engine idles well and idle rpm is steady. When rpm is raised to
>  about 4000 under no load the engine stumbles, rpm drops and sometimes
>  it backfires. With the intent to see if it was a fuel-air mixture problem
>  I tried to enrichen and lean the mixture by poking the air flow meter
>  flap a little. (At least this is the effect I hoped it would have)
>  This did not seem to help.
>
>  We test drove a bit around the village roads.
>  During driving the stumbling can come at any time. Sometimes power comes
>  back after a backfire, sometimes the engine dies. It will restart without
>  problem after dying.
>
>  In case the problem was related to sticky valves I bought and used some
>  valve cleaning gas additative, and did an oilchange with an engine
> flushing
>  and cleaning substance (said it could unstick valves on bottle - smelled
>  and felt like kerosene).
>
>  Before the trip compression tested ok (10,10,10,9.5bar) I don't have
>  a compression tester with me.
>
>  Anyone has ideas for what else to test? I have a basic socket set and
>  a multimeter with me. I also recall some posts years ago fixing
>  stumbling problems with a capacitor over the" air flow meter output.
>  Anyone recalls details. (I somehow failed to find it in
>  the archives under capacitor and stumble)
>
>  Failing finding the problem we will try to make it back to Germany.
>  Anyone knows how to find a good mechanic in or near Saarbruecken?
>  (we're about 20km south of Saarbruecken now)
>
>  Thanks,
>  Martin
>
>
> ---------------------------------
> Be smarter than spam. See how smart SpamGuard is at giving junk email the
> boot with the All-new Yahoo! Mail
>