Brothers and Sisters of the List,
 
It�s good to be back after about a year away from your wisdom and wit.  
 
I am having a curious problem � can anyone help?  My 87 Vanagon 2.1
suddenly lost power in the upper rpms.  It does not buck or lug at all �
simply fades as I accelerate past about 45 mph.  Starts and idles just
fine; seems ok at lower speeds, except it won�t top about 3k rpm in any
gear.  I did find some rust in my gas, but my prefilter seemed to catch
it and has been replaced, as well as the main fuel filter.  One year ago
(6k miles) I replaced plugs, wires, distributor cap and rotor, fuel
lines and pump, fuel pressure regulator, cat, exhaust pipes, O2 sensor,
temp 2 sensor.  My Digitool readouts all are the same as before this
problem developed, which would seem to rule out problems in any of the
components sending info to the ECU.  What should I check?  Fuel
pressure?  Injector spray pattern and delivery?  Timing?  
 
TIA,
Jim Creech