Thread: G9 questions
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Old 11-19-2015, 12:22 PM   #7
sho305
Vegas modded 420
 
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Yamaha
 
Join Date: Jun 2009
Location: West MI
Posts: 15,445
Default Re: G9 questions

Should have hot 12v on red/white going to coil/start solenoid/ignitor, while you have the key on and the pedal pressed. Make sure all those have a good ground, they are common to have connection issues, especially the small wires hooking to the solenoid. Get a ngk bprs2es (?) plug, its the normal plug for newer yami like a G16. If you are sure all the wiring is good; the trigger is on the flywheel they never seem to go bad, it signals the ignitor to fire the coil. Ignitors are expensive they don't go out that often but does happen. Sometimes when hot, sometimes they have bad wire plugs in them, sometime you can squeeze the ignitor case and they start working. The ignitor (near the fuel pump) is sort of a cdi box actually a tfi or whatever it is, it is supposed to retard the timing to zero <1K rpm for starting/idle and let it be advanced to 28 degrees at 2500 rpm and above. IIRC the timing is advanced on the pickup and it just holds it back at low rpm. Get a $5 spark tester if you don't have one.
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