Engine Cutting Out

Anything related to Vespas... ask tech questions, post helpful info, or just read and learn.
pooliepfr
registered user
Posts: 23
Joined: Fri May 24, 2019 4:43 pm
Main scooter: Vespa PX 125
Contact:

Wed Nov 06, 2019 4:58 pm

Hi, when i'm slowing down and even before i have come to a stop the engine cuts out.
This has happened on two journeys a few weeks apart and has happened for the length of the journeys every time slow down or stop.
Anyone got any ideas why this might happen please.
Scoot is an 07 standard PX125.

User avatar
GTFOMWSC
registered user
Posts: 324
Joined: Sat Jan 01, 2011 5:49 pm
ebay user ID: itsthewillo
Main scooter: GP230 Super Monza CS Tuned
Location: Rugby
Contact:

Wed Nov 06, 2019 7:19 pm

pooliepfr wrote:
Wed Nov 06, 2019 4:58 pm
Hi, when i'm slowing down and even before i have come to a stop the engine cuts out.
This has happened on two journeys a few weeks apart and has happened for the length of the journeys every time slow down or stop.
Anyone got any ideas why this might happen please.
Scoot is an 07 standard PX125.
might be a loose carb on the engine body just might need a quick tighten up
the man don't give a f@@k

Daggs
registered user
Posts: 963
Joined: Wed Jan 07, 2009 1:23 pm
Location: Addington Kent
Contact:

Wed Nov 06, 2019 10:21 pm

If it was a Lambretta, I would suggest the Pilot jet was blocked.

paul d
registered user
Posts: 325
Joined: Thu Jun 30, 2011 10:00 am
Main scooter: T5 172 Tv 240
Location: Galway Ireland
Contact:

Sat Nov 09, 2019 2:22 am

That could be anything! I'd raise the tickover a bit by twisting the screw that points upwards on the top of the carb box. See if it helps. I bet thats your problem. If not, check that the ht lead hasn't loosened from the sparkplug cap or the cdi box. Change the sparkplug but check the colour of the one your replacing. Try running with the fuel cap loose. A fuel hose that's too long will have the scooter cutting out but starting up fine after a very short time. As mentioned earlier, maybe the pilot jet is slightly blocked. Remove and clean or just spray carb cleaner or compressed air through all the jets and every hole in the carb. Clean the airfilter and the filter in the carb that sits under the cap held by a screw on the top of the carb if you haven't done it recently. Does the scooter need alot of kicks to start from cold? If so, it might need new rings. All simple stuff. Best of luck with it!

mick1
registered user
Posts: 1545
Joined: Sun Dec 04, 2011 7:43 pm
ebay user ID: saxonleaf
Main scooter: Li Avanti 225
Location: York
Contact:

Sat Nov 09, 2019 8:02 am

as said above, could be anything.....another option is a clogged air filter, causing it to flood. clean the filter or leave it off (temporary) and see how it goes.

pooliepfr
registered user
Posts: 23
Joined: Fri May 24, 2019 4:43 pm
Main scooter: Vespa PX 125
Contact:

Sat Nov 09, 2019 11:13 am

Thanks all, plenty for me to check there.
I should also add that I use my scooter every day and this has only happened twice.

Post Reply Previous topicNext topic
  • Information
  • Who is online

    Users browsing this forum: No registered users and 2 guests