OP
UTC

Hooked
2007 Vespa GTS 250
Joined: UTC
Posts: 249
Location: Illowa
 
Hooked
2007 Vespa GTS 250
Joined: UTC
Posts: 249
Location: Illowa
UTC quote
My 2007 GTS 250ie lately, (conditions are very hot here right now) has been making a noise after I let off on throttle of "putt putt putt" or like mini farting sounds. Is this bad gas, heat, fuel system, or something else? Someone said remove fuel cap and let air pressure out of evap system, but I did that and the scooter is still farting. I am having scoot serviced next week and could tell them to take a look. ..
@jkj-fz6 avatar
UTC

Ossessionato
BV400, Primavera 150, Yamaha Zuma 125
Joined: UTC
Posts: 4428
Location: Twin Cities, Minnesota
 
Ossessionato
@jkj-fz6 avatar
BV400, Primavera 150, Yamaha Zuma 125
Joined: UTC
Posts: 4428
Location: Twin Cities, Minnesota
UTC quote
Feed it less beans.
@teapotdome avatar
UTC

Molto Verboso
2006 GT (sold) 2015 GTS (sold) 2007 LX (sold)
Joined: UTC
Posts: 1142
Location: Just outside Milton, Georgia USA
 
Molto Verboso
@teapotdome avatar
2006 GT (sold) 2015 GTS (sold) 2007 LX (sold)
Joined: UTC
Posts: 1142
Location: Just outside Milton, Georgia USA
UTC quote
That mild backfiring is usually the result of air getting into the exhaust system.

Check the carbon bushing connecting the head pipe to the muffler for leaks.

Also, you might check the head pipe bolts; snug them up if they're loose.

Some scooters do this anyway; my LX with the stock exhaust will backfire on deceleration from time to time.

Modern Vespa is the premier site for modern Vespa and Piaggio scooters. Vespa GTS300, GTS250, GTV, GT200, LX150, LXS, ET4, ET2, MP3, Fuoco, Elettrica and more.

Buy Me A Coffee
 

Shop on Amazon with Modern Vespa

Modern Vespa is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com


All Content Copyright 2005-2025 by Modern Vespa.
All Rights Reserved.


[ Time: 0.0106s ][ Queries: 3 (0.0030s) ][ live ][ 327 ][ ThingOne ]