Several list members suspected that the miss was electrical in nature. They suggested that I look at all high voltage (all of 12vdc) ignition connections and related grounds. I have an RML ignition kit: coil, ignition control module, and Bosch distributor with an optical trigger. The GTV is my track car.
I tested for 12vdc at the coil and found it after a few attempts. I replaced the connector since it was on the old side. All other wires at the coil were removed and examined along with a ground wire to the body for the ignition control module. Used electrical cleaner spray on the multi-wire connector between the control module and the optical trigger. Removed the cap and inspect the innards, rotor, and all the plug wires and HT wire; nothing out of the ordinary was found. Checked the timing and it was still at my setting it to 5 degrees BTDC. On todays test run on the DC Beltway at noon, the miss seemed to be missing at constant throttle at speeds between 50-70mph (don't tell anyone ..). I'll perform some more tests and if the miss is gone, I'll reset the fuel cutoff solenoid to its leaner setting and re-test. Bruce On Mon, Sep 30, 2013 at 11:14 PM, Bruce Giller <[email protected]> wrote: > My GTV has started the annoying habit of a slight miss when at a constant > speed. I can feel the car surge slightly whenever I maintain speed. The > car accelerates well, idles and does not die. It occurred at 50, 60, and > 70 mph. > > I looked at the spark plugs (Bosch Platinum 4-point ( > http://www.international-auto.com/ignition-system/spark-plugs.cfm)) and > they are light grey in color. Pulling each plug wire one at a time did not > reveal any spark plug to be the culprit - nor did I expect it to. > > I did readjust the fuel cutoff solenoid to run a bit richer but I doubt > that will really fix it. > > Any other ideas I can try? > > Thanks, > > Bruce > > '73 GTV -- to be removed from alfa, see http://www.digest.net/bin/digest-subs.cgi or email "unsubscribe alfa" to [email protected]
