GT200 no spark after short run
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Member
GT-200 2006
Joined: 27 Nov 2019
Posts: 5
Location: Santa Barbara CA
Mon Dec 02, 2019 4:23 pm quote
I have a 2006 GT200 that runs great. My problem is that if I take a short run to the store 1-2 miles, When I return to start it, the lights all work, starter engages, but there is no spark. I have changed out, the plug, plug wire, coil, CDI, and have a new battery. I also disabled the kill switch.Nothing helps. If I wait, it starts great and will run for hours without so much as a hesitation. It doesn't have to reach normal operating temp to have the issue. I keep a spare plug with me and hook it to the spark wire to test for spark.
The issue only affects starting - not the running of the scooter.

Any ideas?

Thanks,

Lee
Moderaptor
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: 26 Aug 2007
Posts: 37661
Location: Pleasant Hill, CA
Mon Dec 02, 2019 4:44 pm quote
The only thing you've not specifically mentioned is the plug cap itself. These are notorious for intermittent spark when they're a few years old, and this could easily be heat sensitive.

Apart from that, you've covered all the possibilities that I can think of, at least at first glance.
Sponsor
Granturismo 218
Joined: 04 Feb 2013
Posts: 5624
Location: South Carolina
Mon Dec 02, 2019 5:39 pm quote
My guess would be stator or voltage regulator, mainly because that's about all that's left.
Veni, Vidi, Posti
MP3 500, GTS 250 (both 2008 MY), 2012 Honda NC700 DCT
Joined: 02 Mar 2013
Posts: 5485
Location: Madison, Wisconsin
Mon Dec 02, 2019 6:07 pm quote
How about a ground wire not hooked up?
Moderaptor
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: 26 Aug 2007
Posts: 37661
Location: Pleasant Hill, CA
Mon Dec 02, 2019 7:13 pm quote
Madison Sully wrote:
How about a ground wire not hooked up?
The symptoms are either heat related (most probable) or time related. I can ..just.. about imagine a ground connection being heat related - but not time related.

Of course, there's always the possibility that the new CDI has the same fault. New != Tested and working.
Member
GT-200 2006
Joined: 27 Nov 2019
Posts: 5
Location: Santa Barbara CA
Tue Dec 03, 2019 2:16 pm quote
My ground is solid and I just ordered a new plug cap. If the stator were bad would the bike run smoothly? Whatever this is, it ONLY affects starting when the bike is not cold, and has no effect on its running when it is going. It ALWAYS starts from a cold start.

Thanks,

Lee
Ossessionato
2014 Commuter BV350(42,000)/2015 Scoot Life BV350(10,000)/2010 El Diablito SH150i(28,000)
Joined: 27 Dec 2013
Posts: 2274
Location: Orange Park Florida
Tue Dec 03, 2019 3:53 pm quote
I once had a Pontiac that had a bad choke. I had to free the choke plate when I tried to start the car under the same conditions you stated. It wouldn't start when it was warm until I freed the plate.

Edit. I don't have experience with the GT200. Does it have an electronic choke?
Member
GT-200 2006
Joined: 27 Nov 2019
Posts: 5
Location: Santa Barbara CA
Tue Dec 03, 2019 9:20 pm quote
The fuel is being delivered fine. It just has no spark until it cools enough. This same, seemingly heat related issue, does not however affect the running of the scooter no matter how long the ride. Only the warm starting.
Hooked
2003 ET2 (SOLD); 2004 GT200
Joined: 22 Oct 2016
Posts: 353
Location: Atlanta, GA
Wed Dec 04, 2019 7:35 am quote
FWIW my GT200 seems to take a little more effort to start when hot. It's never failed to fire up so I never went hunting for the issue but it would not surprise me if I found myself in your shoes eventually. Please keep us updated.
Ossessionato
BV350, Primavera 150, Yamaha Zuma 125
Joined: 06 Jun 2013
Posts: 2880
Location: The Twin Cities of Minneapolis/Saint Paul, Minnesota
Wed Dec 04, 2019 8:08 am quote
Are you sure there's no spark, or does it just not start when the engine is warm?

Have the valves been adjusted? This wouldn't be related to anything electrical including spark, but it could cause hard starting.
Ossessionato
73 Rally, 74 Rally, 76 ET3, 80 P200, 63 Li125, 65 Li225 Silver Special, 86 Elite 80, 2015 HD Road Glide Special, 2011 Ural Tourist
Joined: 18 Jan 2012
Posts: 3305
Location: Oceanside/ SF
Wed Dec 04, 2019 3:17 pm quote
Iíve had experience on the vintage scooters with similar difficult/no starting when hot but no problems with cold starts. Those were always indicative of a failing CDI. Itís definitely not a common thing.
Member
GT-200 2006
Joined: 27 Nov 2019
Posts: 5
Location: Santa Barbara CA
Wed Dec 04, 2019 9:30 pm quote
I keep a spare plug with me in the scooter. If it fails to start I connect the spare plug to the spark plug wire, ground it to the engine and crank. Thereís no spark. Once, while doing this test, it began with no spark and then suddenly went to spark. I reconnected the spark plug wire it off I went.
Member
GT-200 2006
Joined: 27 Nov 2019
Posts: 5
Location: Santa Barbara CA
Wed Dec 04, 2019 9:31 pm quote
I probably tested it during a failure 10 times. Every time I tested it with a spare plug there was no spark.
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