OP
UTC

Lurker
Vespa LX 150
Joined: UTC
Posts: 3
Location: Birmingham, Alabama
 
Lurker
Vespa LX 150
Joined: UTC
Posts: 3
Location: Birmingham, Alabama
UTC quote
As I was riding home this afternoon on my 2006 LX 150, my engine began to bog down, losing speed, till I was only averaging about 15 MPH. I pulled over and noted that it still idled smoothly, but refused to rev much past idle. I rode the remaining three miles home at a snails pace, with the engine bogging down at anything past 15 mph. Anyone have any ideas as to what's up with my scoot? It idles smoothly, has 1/2 tank of gas, and doesn't seem to be vapor locked. Moments before this happened I had been happily cruising at 50 mph... Anyone else have a similar experience?
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@longbeach avatar
UTC

Hooked
1948 Knucklehead Bobber, 1964 Triumph Chop, 2007 Vespa GTS, 1974 Primavera 200cc
Joined: UTC
Posts: 163
Location: Long Beach, CA
 
Hooked
@longbeach avatar
1948 Knucklehead Bobber, 1964 Triumph Chop, 2007 Vespa GTS, 1974 Primavera 200cc
Joined: UTC
Posts: 163
Location: Long Beach, CA
UTC quote
When you did put gas in it before did you top it up all the way? Or have you let the scoot maybe tip over a little to far when there was more gas in it then there is now?
OP
UTC

Lurker
Vespa LX 150
Joined: UTC
Posts: 3
Location: Birmingham, Alabama
 
Lurker
Vespa LX 150
Joined: UTC
Posts: 3
Location: Birmingham, Alabama
UTC quote
Slow Running
I had filled it up a few days prior, and filled it all the way to the top, as I've been doing for the past year. As to the leaning, it's never been down or leaned at an extreme angle, other than normal spirited riding. I'm guessing I've got crud in the fuel filter, or perhaps a jet partially clogged.
@nightwing avatar
UTC

Contributor
2007 LX 150 (memories)
Joined: UTC
Posts: 8554
Location: New Hampshire
 
Contributor
@nightwing avatar
2007 LX 150 (memories)
Joined: UTC
Posts: 8554
Location: New Hampshire
UTC quote
Re: Slow Running
jalfreds wrote:
I had filled it up a few days prior, and filled it all the way to the top, as I've been doing for the past year. As to the leaning, it's never been down or leaned at an extreme angle, other than normal spirited riding. I'm guessing I've got crud in the fuel filter, or perhaps a jet partially clogged.
You shouldn't really fill it all the way to the top because excess fuel can spill over into the evap cannister. Eventually, you can end up with a fuel soaked air filter element which will choke off the air flow. There have been many threads here warning about problems from over filling.

Have you checked the little plastic bubble on the bottom of the filter housing? If it is full, you probably have a soaked filter.
@scootermarc69 avatar
UTC

Ossessionato
Joined: UTC
Posts: 2101
Location: Santa Margarita,Ca.
 
Ossessionato
@scootermarc69 avatar
Joined: UTC
Posts: 2101
Location: Santa Margarita,Ca.
UTC quote
Heres a guess. The boot between the airbox and the carburetor is cracked or has come loose on either end. Check it out and eliminate it as the culprit.
OP
UTC

Lurker
Vespa LX 150
Joined: UTC
Posts: 3
Location: Birmingham, Alabama
 
Lurker
Vespa LX 150
Joined: UTC
Posts: 3
Location: Birmingham, Alabama
UTC quote
Thanks for both suggestions! I'll check them both out, although it'll probably be tomorrow before I can check it out. I hope both of you are having a great day! Thanks!
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