Bonneville America Forums Forums Technical Forums General Tech no spark, trouble shooting

hello all you electronic gurus. this ones for you. while waiting for my ignitor to come back from triumph twin power i became impatient and tried my luck with a procom. i've read mixed things on the procom but the general consensus is they work. i couldn't get a spark out of it or the second one i ended up exchanging for. since my original worked fine, and the bike just sat, it would all point to the ignitor but what are the chances of two brand new ones not working.

below are my notes. let me know what you think. am i missing something?



NO SPARK DIAGNOSIS

BIKE FIRED RIGHT UP ON ORIGINAL IGNITOR
NOW ON SECOND BRAND NEW PROCOM IGNITOR

BIKE TURNS OVER WITH FULL POWER BUT DOES NOT START SO I ASSUME THE CLUTCH SWITCH, SIDE STAND SWITCH, STARTER RELAY, AND IGNITION SWITCH, ARE GOOD

BRAND NEW NOLOGY COILS, MAGNECOR WIRES, PLUGS, PICK-UP COIL

ALL FUSES ARE GOOD

994 BIG BORE WITH FCR CARBS, STAGE 1 HEAD WORK, 813 SHIM OVER BUCKET CAMS, CARILLO RODS, WHITE MAIN BEARINGS, BOMBER EXHAUST

COILS:
LEFT AND RIGHT BOTH
PRIMARY .6 OHMS
SECONDARY 8.3K OHMS
SECONDARY W/ CABLE 10.2K OHMS
CABLES 1.9K OHMS

ALL PASS TEST

TESTED FOR SPARK WITH GROUNDED WIRE AT SECONDARY SIDE ON LEFT AND RIGHT AND THERE WAS SPARK ONCE ON EACH! BUT KEPT TESTING AND IT STOPPED… HMMM

PICK UP COIL:
COLD
592 OHMS
OK RANGE IS 504-616 OHMS

PASSES

IGNITER:

I HAVE EXTENDED MY WIRING HARNESS TO IGNITOR BY ABOUT A FOOT TO RELOCATE UNDER MY SEAT WITH THE SAME 18 GAUGE WIRE, ALL PROPERLY SOLDERED/HEAT SHRINKED
DOUBLE CHECKED CONTINUITY ON ALL WIRES BEFORE THE SPLICED WIRES AND AT CONNECTOR, ALL GOOD

CONTINUITY ON:
WHITE/BLUE AT PICK UP COIL CONNECTOR IS GOOD
PINK/BLACK AT PICK UP COIL CONNECTOR IS GOOD
GROUND PIN 1 BLACK IS GOOD
GROUND PIN 10 BLACK/WHITE IS GOOD
YELLOW/BLACK AT NEGATIVE RIGHT COIL IS GOOD AND IS HOT AT IGNITER CONNECTOR
YELLOW/PINK AT NEGATIVE LEFT COIL IS GOOD AND IS HOT AT IGNITER CONNECTOR
PINK AT THROTTLE POSITION SENSOR CONNECTOR IS GOOD
GREEN/YELLOW AT TPS CONNECTOR IS GOOD
GREEN/RED AT TACH CONNECTOR IS GOOD

BATTERY GROUND IS GOOD


NO RED WIRE COMING FROM MY IGNITER CONNECTOR AS SAYS IN BOOK
DIDN'T TEST BLACK/RED WIRE BUT IT'S CONNECTED TO CLUTCH SWITCH AND BIKE STARTS

THE GREEN/RED WIRE IS ALSO CONTINUOUS ON BOTH RED WIRES (+) AT BOTH COILS

So you're saying you've replaced all those electronics, extended the harness and it fired with the OEM igniter but not with a Procomm?

yeah I've only got about 1000 miles on the motor since I did my rebuild. new coils, wires, plugs, pick up coil. it ran fine on stock ignitor but won't start on TWO different brand new procoms.

Then I don't know. My only Procomm experience is with the earlier ones for standard Bonnies and I wasn't all that impressed with the unit.

so i got my ignitor back from triumph twin power. plugged it in and it started right up. woo hoo! i'm gonna go test her out now. case closed.

that i can't tell you. i even tried the procom on another bike at the shop just to know i wasn't crazy. no spark.

Wiith the wrong map there should have been spark even if it was at the wrong timing event.

Did you look at the plug out of the bike to make sure there was no spark on both procom units? Or would the bike just not start?

on the second unit, i did have spark on each coil once but it went away immediately and didn't come back after further testing. yes i had the correct position set and yes there should of at least been a spark regardless of the map.