Electronic Spark Control Specifications

COMPUTER PART # TIMING* CURB IDLE SPARK ADVANCE TEST ENGINE ELECTRONIC ELECTRONIC THROTTLE
SPEED @ 2000 RPM** EGR CONTROL
16" VACUUM


4379484 7~ 630 46~ +/- 4~ 318-2 (A) 40 SEC 535 SEC COLD
120 SEC AFTER START HOT 2 SEC OFF IDLE 1 SEC AFTER THROTTLE CLOSES

4379682 7~ 630 46~ +/- 4~ 318-2 (A) 40 SEC 535 SEC COLD
120 SEC AFTER START HOT 2 SEC OFF IDLE 1 SEC AFTER THROTTLE CLOSES

4379226 16~ 750 38~ +/- 4~ 318-4 (A) 40 SEC 200 SEC
AFTER START HOT 3 SEC OFF IDLE 1 SEC AFTER THROTTLE CLOSES

4379228 16~ 750 38~ +/- 4~ 318-4 (A) 40 SEC 200 SEC
AFTER START HOT 3 SEC OFF IDLE 1 SEC AFTER THROTTLE CLOSES


* Basic timing set with vacuum line disconnected-do not readjust curb idle.