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Member
GTS 300 SS
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Location: Brisbane, Queensland
 
Member
GTS 300 SS
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Location: Brisbane, Queensland
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I have recently purchased a new Super Sport, which currently has about 1000km's. On about 5 separate occasions at constant speed the rev's die for a split second... Other than this, my wife and I love the scoot.

Does anyone know what this could be?

(Not a big issue as I am taking it in for its first service soon, so will get the shop to investigate)
@nomad68 avatar
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Molto Verboso
Back on a 125cc!
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Location: High Wycombe UK
 
Molto Verboso
@nomad68 avatar
Back on a 125cc!
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Posts: 1149
Location: High Wycombe UK
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2012 gts 300 super sport engine dyeing

Have a read of this....

There are loads of threads about this, mine does it too
OP
UTC

Member
GTS 300 SS
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Posts: 19
Location: Brisbane, Queensland
 
Member
GTS 300 SS
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Location: Brisbane, Queensland
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Thanks spike 68, once you get past the pom' having a dig at each other, there is some really useful info.
@nomad68 avatar
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Molto Verboso
Back on a 125cc!
Joined: UTC
Posts: 1149
Location: High Wycombe UK
 
Molto Verboso
@nomad68 avatar
Back on a 125cc!
Joined: UTC
Posts: 1149
Location: High Wycombe UK
UTC quote
Have a search around on here and on the net, it's a problem loads of gts's are having
@judy avatar
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World Traveler
2007 LX150 Daring Plum Leonardo Da Vespa
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World Traveler
@judy avatar
2007 LX150 Daring Plum Leonardo Da Vespa
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Posts: 29304
UTC quote
TWONK yup that's MV. A warm aloha and welcome to the forum from Hawaii. Good luck with your problem.
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Molto Verboso
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Molto Verboso
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UTC quote
Sounds like its one of the new G3 ecu models that had bad software, so needs a remap session...
@bill_dog avatar
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eeeee bip
BMW R1100RT The Problem Child Kymco Downtown 300 - I'm not the Uber Honda Cub - Scorched Earth Policy
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Location: South East Great England of Britishland
 
eeeee bip
@bill_dog avatar
BMW R1100RT The Problem Child Kymco Downtown 300 - I'm not the Uber Honda Cub - Scorched Earth Policy
Joined: UTC
Posts: 20619
Location: South East Great England of Britishland
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target
One of many I fear.

Mine included.

Bill X
@motovista avatar
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Veni, Vidi, Posti
GT 2.4
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Location: Watts, Cherokee Nation
 
Veni, Vidi, Posti
@motovista avatar
GT 2.4
Joined: UTC
Posts: 9026
Location: Watts, Cherokee Nation
UTC quote
In Italy, they tend to program the ecu so that it flattens out at the rpm level the ECC checks noise levels at. Ducatis and Moto Guzzis were notorious for having a flat spot at 4000 rpm because of this. Sometimes it doesn't work out quite so well in the long run.
OP
UTC

Member
GTS 300 SS
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Posts: 19
Location: Brisbane, Queensland
 
Member
GTS 300 SS
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Location: Brisbane, Queensland
UTC quote
Thanks folks, at least i have something to discuss with the mechanics on Thursday!
@david_masse avatar
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Ossessionato
2016 Vespa GTS 300 i.e. ABS sold, 2010 Vespa GTS 300 ie Super (sold) & 2003 Honda Shadow VT750 ACE (sold) & 2006 Vespa LX150 (sold)
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Location: Toronto (formerly Montreal)
 
Ossessionato
@david_masse avatar
2016 Vespa GTS 300 i.e. ABS sold, 2010 Vespa GTS 300 ie Super (sold) & 2003 Honda Shadow VT750 ACE (sold) & 2006 Vespa LX150 (sold)
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Posts: 3196
Location: Toronto (formerly Montreal)
UTC quote
I had a similar intermittent problem with my 2010 GTS 300 i.e. Diagnostic finally kicked out a fuel injector fault. Installed a new injector: problem solved.
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Enthusiast
GTS300
Joined: UTC
Posts: 54
Location: LA
 
Enthusiast
GTS300
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Location: LA
UTC quote
I had this happen to me for a split second this morning. The check engine light went for for about that same second then it was gone and it was like nothing ever happened.

I've had this happen to me about 3 other times now and i'm at 4k on my GTS.

Seems to only happen at speeds over 70mph for me though and mostly over speeds of 80mph.

This was the first time it happened at less than 80mph.
OP
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Member
GTS 300 SS
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Posts: 19
Location: Brisbane, Queensland
 
Member
GTS 300 SS
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Location: Brisbane, Queensland
UTC quote
Took the scoot for its 1000km service this morning and they have uploaded new ecu software, so far so good....
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