Just be very careful as you are unplugging the plug on the tank sender.
When they fail it is usually because the plastic part that the plug
plugs into breaks off of the side of the sender.  I have some good used
and even a new gas gauge if you find you need one.  Also I have new
syncro fuel tank senders available as well.

One last thought, is your coolant temp reading low as well?  It could
just be that the voltage regulator for your instrument cluster has gone
bad.  The test for this is in the Bentley Manual and it is pretty easy,
quick test to do.  When these fail they will cause both the fuel gauge
and the coolant gauge to read wrong.  That is the big hint that this is
the problem.  I have new voltage regulators in stock as well.

Ken Wilford
John 3:16
www.vanagain.com

Gilles H Turmel wrote:
> Hi,
> I have an 89 Westy Syncro.  When I fill up the tank the fuel gauge shows half on the instruments cluster.  Is there a procedure to identify the problem, the fuel gauge or the fuel level sender in the fuel tank or any other problem?
> Best regards.
>
>