Yamaha G16 Ignition coil or fuel

TestPoint · 04-12-2018, 07:57 PM

My ignition coil on a '97 G16 suddenly failed. No spark, disconnected throttle ground lead to coil and no spark, no start.

OEM ignition coils start about $125 and Chinese universal coils at $15. Ordered the $15 version and it does produce spark but . . . the laminated core is about 1/8" thinner than OEM and mounting holes place the coil to flywheel gap far outside OEM specs.

It will begrudgingly start but seems to have little power. There is no timing adjustment that I can see with a rigidly mounted coil.

Obviously, I had to disturb the carburetor to get the air filter to carb duct out of the way but did nothing to disturb the internal carburetor function. I did replace all of the 20 year old fuel hose.

Based on spark plug appearance after maybe a half hour running I would say it is running lean rather than rich.

Suggestions would be appreciated.

sformal · 04-12-2018, 08:30 PM

OEM is not so expensive: http://www.boats.net/parts/detail/ya...640-00-00.html

Be ready to order one... soon or (not too much) later

Myself, I would not wait and solve the trouble for good...

cgtech · 04-12-2018, 09:36 PM

Well, at least the coil is only $15 in the trash. Hey, lesson learned. If the cart ran fine before the "no spark" situation, but runs crummy now with Cheap China coil (that is well known in Yamaha circles to be of poor quality), I'm looking squarely at that coil. Might as well get all 3 intake gaskets when you change the coil.

sformal · 04-13-2018, 12:59 AM

Quote:

Originally Posted by cgtech

Might as well get all 3 intake gaskets when you change the coil.

Very true!!! Mine are not easy to have (only from Japan) but keep them in good shape with Vaseline...

TestPoint · 04-13-2018, 05:05 AM

Thanks guys!

I will add the gaskets. Anyone got the part numbers? I have not figured out how to effectively search the Boat.net catalog

Anything else worthy of replacement while everything is apart?

Dave in VA · 04-13-2018, 06:07 AM

JN6-13567-00-00

Carb gasket

sformal · 04-13-2018, 09:27 AM

Yamaha part catalogs:

https://www.shopyamaha.com/parts-catalog/lines/golfcar

04-12-2018, 07:57 PM	#1
TestPoint Not Yet Wild Join Date: Jul 2010 Posts: 34	Yamaha G16 Ignition coil or fuel My ignition coil on a '97 G16 suddenly failed. No spark, disconnected throttle ground lead to coil and no spark, no start. OEM ignition coils start about $125 and Chinese universal coils at $15. Ordered the $15 version and it does produce spark but . . . the laminated core is about 1/8" thinner than OEM and mounting holes place the coil to flywheel gap far outside OEM specs. It will begrudgingly start but seems to have little power. There is no timing adjustment that I can see with a rigidly mounted coil. Obviously, I had to disturb the carburetor to get the air filter to carb duct out of the way but did nothing to disturb the internal carburetor function. I did replace all of the 20 year old fuel hose. Based on spark plug appearance after maybe a half hour running I would say it is running lean rather than rich. Suggestions would be appreciated.
TestPoint Not Yet Wild Join Date: Jul 2010 Posts: 34

04-12-2018, 08:30 PM	#2
sformal Gone Wild Join Date: Jun 2015 Location: Philippines Posts: 570	Re: Yamaha G16 Ignition coil or fuel OEM is not so expensive: http://www.boats.net/parts/detail/ya...640-00-00.html Be ready to order one... soon or (not too much) later Myself, I would not wait and solve the trouble for good...

04-12-2018, 09:36 PM	#3
cgtech Over This Interview Is... Join Date: Jun 2012 Location: AZ Posts: 17,449	Re: Yamaha G16 Ignition coil or fuel Well, at least the coil is only $15 in the trash. Hey, lesson learned. If the cart ran fine before the "no spark" situation, but runs crummy now with Cheap China coil (that is well known in Yamaha circles to be of poor quality), I'm looking squarely at that coil. Might as well get all 3 intake gaskets when you change the coil.

04-13-2018, 05:05 AM	#5
TestPoint Not Yet Wild Join Date: Jul 2010 Posts: 34	Yamaha G16 Ignition coil or fuel Thanks guys! I will add the gaskets. Anyone got the part numbers? I have not figured out how to effectively search the Boat.net catalog Anything else worthy of replacement while everything is apart?
TestPoint Not Yet Wild Join Date: Jul 2010 Posts: 34

04-13-2018, 06:07 AM	#6
Dave in VA maintaining a low profile Join Date: Oct 2009 Location: SW Virginia USA Posts: 6,316	Re: Yamaha G16 Ignition coil or fuel JN6-13567-00-00 Carb gasket

Today
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04-13-2018, 09:27 AM	#7
sformal Gone Wild Join Date: Jun 2015 Location: Philippines Posts: 570	Re: Yamaha G16 Ignition coil or fuel Yamaha part catalogs: https://www.shopyamaha.com/parts-catalog/lines/golfcar

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