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Gas Yamaha Gas Yamaha Golf Cars; G1 through "The Drive" and U-Max Utility Vehicles |
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07-11-2012, 03:13 PM | #1 |
Gone Wild
Join Date: Sep 2010
Location: Florida
Posts: 1,895
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G2 no spark help
I have a G2 that is kicking my butt. So far everything has tested fine so I've been parts changing which takes time and money. I've changed the ignitor, coil, pick-up(pulser) coil, new plug, new ground from battery to motor and brand new harness and fuses. I get a weak and sometimes good spark for a split second when I let off pedal and thats it. Also the cart has oil in it and the battery cables are not backwards.By-passed pedal switch as ive seen that in rare cases also. Any suggestions are welcomed as both myself and my customer are becoming impatient. I dont have a voltage regulator in stock but I'm not sure if that would cause this or not...Every thread I've looked at has the same problem with no solution so this would be a great time to add one on the net...I Will keep posted...
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07-12-2012, 10:58 AM | #2 |
Admin
Join Date: Dec 2006
Location: TN
Posts: 101,871
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Re: G2 no spark help
I've only had this problem once and it ended up being something in the wiring harness somewhere because that is what I ended up replacing with larger wire (10 or 12 ga if I remember right)(I made it up myself) and it fixed it. I see you've replaced the wiring harness though. One aggrivating problem. Keep us posted.
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07-12-2012, 11:00 AM | #3 |
Gone Wild
Join Date: Sep 2010
Location: Florida
Posts: 1,895
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Re: G2 no spark help
Thanks for the reply spriddle...yeah Im pulling my hair out on this one...and I'm a Yamaha dealer I have a feeling its gunna be something Ive overlooked or an oddity but finding it is proving to be....difficult..
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07-12-2012, 11:04 AM | #4 |
Admin
Join Date: Dec 2006
Location: TN
Posts: 101,871
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Re: G2 no spark help
Might try some larger guage wire. Just a suggestion and have no idea if it would help or not. I noticed a greater amount of power to my old G9 after replacing the wiring harness with larger guage wire. Could've just been something else but it fixed several electrical issues I was having including a weak spark.
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07-12-2012, 11:10 AM | #5 |
Gone Wild
Join Date: Sep 2010
Location: Florida
Posts: 1,895
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Re: G2 no spark help
Ill try anything at this point lol...The only thing that throws me is the weak spark I get right when I let on or off the pedal...this usually points to a ground issue I believe...I'll try running a larger ground strap to the motor along with uping the wiring...
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07-12-2012, 11:33 AM | #6 |
Admin
Join Date: Dec 2006
Location: TN
Posts: 101,871
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Re: G2 no spark help
G2's have a rev limiter on them built into the ignition box somehow. Have you considered maybe it might possibly be linked in with this. Just throwing it out there.
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07-12-2012, 04:08 PM | #7 |
Not Yet Wild
Join Date: Oct 2009
Location: Pleasant Hill Ca
Posts: 45
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Re: G2 no spark help
probably a dumb question but did you try a new battery??? Been bit by that in the automotive field. usually a cheap and easy thing to rule out . I know how you feel being a factory tech,you feel more pressure,cause your the dealer! I am a jaguar land rover tech and I completely agree its probably something simple thats been over looked. Been there done that!!!Keep at it and keep us all posted. Tom
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07-12-2012, 07:45 PM | #8 |
Sometime's............
Join Date: Oct 2007
Location: Tacoma Washington
Posts: 11,875
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Re: G2 no spark help
Did the customer work on the car before bringing it to you?
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07-12-2012, 08:41 PM | #9 |
I Refuse To Get Stuck!!!
Join Date: Jun 2010
Location: Hilton,NY
Posts: 5,427
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Re: G2 no spark help
My Wifes' G16 was doing the same thing,It was a bad ground-wire from the panel the electrics are mounted to,It ran from the panel(grounded at solenoid mount-bolt)into the engine-harness.I ran a new one to the battery,been fine ever since.It was broken internally somewhere in the harness,instead of cutting it all apart,I just put a jumper on and bypassed it,It started,so I ran the new wire.Hope this helps.
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07-13-2012, 06:44 AM | #10 |
Gone Wild
Join Date: Sep 2010
Location: Florida
Posts: 1,895
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Re: G2 no spark help
Thanks for the replies everyone...Yes I've put a new battery in and tried reversing the battery leads as well, customer bought it from a family friend that had spliced and diced the wiring harness up real bad so I replaced that hoping that was the only problem(unfortun no), I've tried a new ground strap to motor but havent done that to the harness itself so I'll try that this morn. Also I've call Yamaha and got a few suggestions...he says the symptom now is not No Spark...but what he calls first and last spark do to there not being a weak spark when the solenoid first clicks or when you let off pedal...
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