Disconnect your O2 sensor and see if it still has the problem.  Do you
think the exhaust is rich?  You can also try and put a digital
voltmeter on the O2 sensor output with the sensor disconnected from
the ECU.  Voltage should be around 0.45VDC.

On an 83.5 digijet, I would check the throttle switches.  There's two
switches that tell the position of closed throttle and WOT.  I don't
know what you would have on the 86 and older models.

-- Craig

On Tue, 23 Nov 2004 15:44:50 -0500, Jason Willenbrock
<pooncerelli@hotmail.com> wrote:
> hey all,
> recently i have been experiencing very sluggish acceleration in first and
> second gear on my 87 syncro westy.  it is almost like hesitation in a way.
> i have to ride the clutch just to keep my rpms up.  where should i check?
> valves?  fuel pressure regulator?
> i have new (used)icu, isv.  i put new fuel filter.  i checked for vacumn
> leeks and found none.  what else?
> TIA
> jason
>