Dennis-

great layout of procedure! If you had the time at some point, would you
consider doing the same for Digifant?  Speaking for myself, the Bentley is
hard to follow, particularly in the work sequence (and proprietary tools)
and I always worry about digging a hole I can't get out of.

thanks,
Matt Sutton
88 GL Brooklyn NY

  Date:    Mon, 11 Oct 2004 08:32:19 -0400
From:    Dennis Haynes <dhaynes@OPTONLINE.NET>
Subject: Re: digijet FI adjustments

If you have the Bentley and a good Digital volt-meter and a timing light you
can do it. The Digijet requires very specific set up for the throttle plate,
ignition timing, idle speed and CO. The adjustment on the AFM is only to
help trim the adjustment at idle. Basic setting are as follows:

Engine close to operating temp.
With engine off, disconnect 02 sensor and bypass idle stabilizer.
Check throttle plate adjustment. Adjust stop screw so it does not stick
closed. Idle air goes through bypass screw. Check operation of throttle
switch or switches. Adjust as needed.
Start engine, adjust timing to proper mark at idle speed. Check vacuum
advance operation. Opening throttle should quickly advance timing. Further
check, remove vacuum retard hose, (one directly to manifold). Timing must
advance. If not, hoses are wrong, diaphram is bad, or throttle plate not
adjusted properly. Find cause. Adjust idle speed to ~950 rpm.
Using voltmeter, check O2 sensor voltage, (still disconnected). Should be
about .5v. If no reading, rev engine for 30 seconds to heat sensor. Adjust
AFM to get .5v. Just get it close. Slightly lean is better. Adjust idle
speed again if needed.
Shut off engine, reconnect stabilizer and O2 sensor. Restart, and check O2
sensor operation. After 30 seconds or so, you should be able to see it
working.

On occasion, you may have surging at idle, especially after a warm restart.
If you do, I'll tell you how to correct that.

Dennis