Do the Vanagons have the same system as my '89 Jetta diesel for indicating
water in the fuel?  My owner's manual says a flickering of the glow plug
light indicates a need to drain the fuel/water separator at my fuel tank.
Any ideas how water in the fuel would cause the glow plug light to flicker?
Some kind of resistance reading across the plug?  I drained a little out
this morning and no flicker.

                                              Jay