Sun Jun 06, 2021 8:57 am

Member
Gts300, p210, gp200, ts1 225.
Joined: 15 Sep 2017
Posts: 6
Location: West wales
 
Member
Gts300, p210, gp200, ts1 225.
Joined: 15 Sep 2017
Posts: 6
Location: West wales
Sun Jun 06, 2021 8:57 am linkquote
Any ideas on this? 2010 gts 300. Cut out and will not start. Cranks over but will not fire, there is a spark and fuel is coming out of the injector. Fitted a new battery and regulator as there were charging problems (started fine afterwards but then this problem started) Tried blue and brown keys but it still just cranks over without firing. Checked the valve clearances when i gave it a full service roughly 1000 miles ago. Im stumped!
Sun Jun 06, 2021 9:08 am

Member
2005 GT200, 2018 GTS, 1965 Allstate
Joined: 10 Aug 2017
Posts: 30
Location: Chicagoland
 
Member
2005 GT200, 2018 GTS, 1965 Allstate
Joined: 10 Aug 2017
Posts: 30
Location: Chicagoland
Sun Jun 06, 2021 9:08 am linkquote
Belt in good shape?
Sun Jun 06, 2021 9:11 am

Member
Gts300, p210, gp200, ts1 225.
Joined: 15 Sep 2017
Posts: 6
Location: West wales
 
Member
Gts300, p210, gp200, ts1 225.
Joined: 15 Sep 2017
Posts: 6
Location: West wales
Sun Jun 06, 2021 9:11 am linkquote
All good, new belt fitted with a polini variator when I did the service.
Wed Jun 09, 2021 1:40 pm

Addicted
2015 Vespa GTS300 Super
Joined: 26 Sep 2017
Posts: 560
Location: Connecticut
 
Addicted
2015 Vespa GTS300 Super
Joined: 26 Sep 2017
Posts: 560
Location: Connecticut
Wed Jun 09, 2021 1:40 pm linkquote
Wiring short? Starter? ECU?
Wed Jun 09, 2021 1:50 pm

Ossessionato
Joined: 10 Jun 2007
Posts: 2121
Location: So Cal
 
Ossessionato
Joined: 10 Jun 2007
Posts: 2121
Location: So Cal
Wed Jun 09, 2021 1:50 pm linkquote
I have not encountered this problem, so I'm no help I'm sure more experienced folks here will be able to offer useful suggestions.
I'm just chiming in to say Hello and Welcome to Modern Vespa, gp200ts1. Hope you get things sorted and back on the road soon!
Wed Jun 09, 2021 1:57 pm

Molto Verboso
GTS 300ie Touring, AKA Gigi
Joined: 26 Mar 2018
Posts: 1354
Location: Phoenix, AZ.
 
Molto Verboso
GTS 300ie Touring, AKA Gigi
Joined: 26 Mar 2018
Posts: 1354
Location: Phoenix, AZ.
Wed Jun 09, 2021 1:57 pm linkquote
Welcome to MV! Post some pics, check your cutoff switch, then your battery & connections.
Wed Jun 09, 2021 2:12 pm

Hooked
Stella, GTS 300, Vespa p200e
Joined: 17 Jul 2017
Posts: 135
Location: Portland usa
 
Hooked
Stella, GTS 300, Vespa p200e
Joined: 17 Jul 2017
Posts: 135
Location: Portland usa
Wed Jun 09, 2021 2:12 pm linkquote
Check the spark pluug and cap.
Fri Jun 11, 2021 8:37 am

Member
Gts300, p210, gp200, ts1 225.
Joined: 15 Sep 2017
Posts: 6
Location: West wales
 
Member
Gts300, p210, gp200, ts1 225.
Joined: 15 Sep 2017
Posts: 6
Location: West wales
Fri Jun 11, 2021 8:37 am linkquote
Right, plug, lead and cap replaced. Plug sparks great when out of head.
Fuel pump works great and the injector is spraying fuel.
Cranks over well so itís not the starter motor.
Kill switch stops it cranking so thatís working.
Battery is new and fully charged.
Air filter is clean.
Belt and rollers are great as they were only changed 1000 miles ago.
No faults showing when the diagnostics are run.
Valve clearances are spot on.
This is driving me demented as I canít suss it.
Fri Jun 11, 2021 8:42 am

Petty Tyrant
GTS250 GTS300 MP3 500
Joined: 11 Oct 2005
Posts: 31030
Location: Bay Area, California
 
Petty Tyrant
GTS250 GTS300 MP3 500
Joined: 11 Oct 2005
Posts: 31030
Location: Bay Area, California
Fri Jun 11, 2021 8:42 am linkquote
gp200ts1 wrote:
Right, plug, lead and cap replaced. Plug sparks great when out of head.
Fuel pump works great and the injector is spraying fuel.
Cranks over well so itís not the starter motor.
Sounds like you've covered all the bases. An engine needs air, fuel, and spark. You say the plug sparks great when out of the head -- what did you ground it to when you were testing that?

Is it possible the ground lead to the side of the engine is faulty?
Fri Jun 11, 2021 8:57 am

Member
Gts300, p210, gp200, ts1 225.
Joined: 15 Sep 2017
Posts: 6
Location: West wales
 
Member
Gts300, p210, gp200, ts1 225.
Joined: 15 Sep 2017
Posts: 6
Location: West wales
Fri Jun 11, 2021 8:57 am linkquote
Funnily enough I noticed that lead was loose so I sorted that but no change. Grounded it to the head cover.
Fri Jun 11, 2021 9:04 am

Petty Tyrant
GTS250 GTS300 MP3 500
Joined: 11 Oct 2005
Posts: 31030
Location: Bay Area, California
 
Petty Tyrant
GTS250 GTS300 MP3 500
Joined: 11 Oct 2005
Posts: 31030
Location: Bay Area, California
Fri Jun 11, 2021 9:04 am linkquote
gp200ts1 wrote:
Funnily enough I noticed that lead was loose so I sorted that but no change. Grounded it to the head cover.
Okay, good. But now is the engine flooded from repeated start attempts?
Fri Jun 11, 2021 12:55 pm

Member
Gts300, p210, gp200, ts1 225.
Joined: 15 Sep 2017
Posts: 6
Location: West wales
 
Member
Gts300, p210, gp200, ts1 225.
Joined: 15 Sep 2017
Posts: 6
Location: West wales
Fri Jun 11, 2021 12:55 pm linkquote
Bollocks, the ht lead had become trapped and was shorting. It was still sparking at the plug but was shorting out stopping it from running. Fixed now.
Fri Jun 11, 2021 1:28 pm

Petty Tyrant
GTS250 GTS300 MP3 500
Joined: 11 Oct 2005
Posts: 31030
Location: Bay Area, California
 
Petty Tyrant
GTS250 GTS300 MP3 500
Joined: 11 Oct 2005
Posts: 31030
Location: Bay Area, California
Fri Jun 11, 2021 1:28 pm linkquote
gp200ts1 wrote:
Bollocks, the ht lead had become trapped and was shorting. It was still sparking at the plug but was shorting out stopping it from running. Fixed now.
w00t!
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