Our favorite toy is sick�It's a 1987 VW Vangon Syncro AdventureWagen.
Recently (2 months ago) had white smoke so we replaced heads along with
clutch ignition wires, tune up items and some misc. stuff  to the tune of 2K.

SYMPTOMS: We were having intermittent loss of power for long time.
Now we have ---Rough idle and stalling, power seems to cut in and out like
throwing a switch. Sometimes it runs fine.  Doesn't seem to be a pattern
except that it is running badly more often now (almost all of the time).  Air
Box and Oxygen Sensor was replaced last year.  Disconnecting Oxygen Sensor
doesn't help.  When it is at it's worst, engine will not go over 3400 RPM
floored in neutral.

We are considering replacing the fuel injectors.  Do you think this could be
the computer or what?  Synchro has 190,000 on it.  Engine was replaced before
we got it from PO, so we don't know how old the engine parts are.