Why does my scooter flood when I give it any throttle after starting it?

by Zach
(Amarillo, TX, USA)

So I just had a rebuilt motor put in my 76 Vespa Sprint 150 scooter. It usually starts pretty easily and comes to an idle with no problem. However, after I get it started and give it a tiny bit of throttle and it just bogs down and dies. After I sit there and rev it a little bit, then wait, rev it a smidge then wait.

After a couple minutes the engine will swing into the mid RPMs and I can ride it. This issue continues when riding the scooter at low RPM it kind of bogs then somehow "switches over" and picks up speed with no problem. I've gotten by, by reving the engine and letting the clutch go fast so it springs into action like it ought to, but I feel like I should be able to ease out the clutch too.

Any thoughts? I opened up the carb and pulled out the jets, they seem to be free of any obstructions. I pulled out the plug and it was black and dry, so I replaced it and put in a new one and when I pulled it out yesterday it was kind of a creamy brown color, which I gather is normal... I'm not sure what else to try.

Click here to post comments

Join in and write your own page! It's easy to do. How? Simply click here to return to Scooter Questions - Starting Scooters.

When you're done here, you may also be interested in reading some of these popular pages:

If you like to talk scooters, check out our motor scooter forums!

Battery Tender Junior in package

A battery tender like the Battery Tender Jr. can make all the difference in whether your scooter will start right up each spring, after being stored for months.

Just about every scooter owner needs to have a battery tender, sometimes called a trickle charger. Unless you are lucky enough to live in a climate where you can ride all year long, chances are your scooter will be put on ice, figuratively-speaking, for at least a couple months every winter.

One of the key steps in winterizing a scooter is to protect your battery from draining during its "rest" period. This can – and will – happen if you leave your battery sitting untended in your cold scooter over the winter, even if it's in a garage or shed.

Read our review or go right to Amazon.com to buy this highly recommended Battery Tender Jr NOW...


ATTENTION! I have had to delete the Scooter Forum for this site, unfortunately. Despite my best efforts, I could not adequately prevent daily attacks by hackers and spammers. Even though most of their posts did not go public, they still cluttered up my website host's server space, jeopardizing my account. I appreciate everyone's contributions over the past few years and I apologize for having to do this.

Wondering why your scooter question never got posted?

Chances are, there is a good reason. Did you...

If you "checked yes" on any of the points above, then I've deleted your post. Sorry, but I have standards. Feel free to re-submit, following the instructions I have everywhere on the site.

Also... all submissions have to be reviewed by me, and I am currently backlogged. Comments go live without approval, but still take 30 to 60 minutes to show up, so don't repost them, please.

This Week's Highlights

Share Your Scooter Blog Here
Your Help Needed!

We have lots of unanswered questions... can you help? Also, check out our newest eScooter Club members We are growing every week!

Keep Up to Date

Follow us on our Facebook Fan Page Follow our updates on Twitter
Subscribe to my motor scooter blog Subscribe to our RSS feed in your feed reader

Help Us Grow

Support This Site

I support this site by using affiliate marketing and running Google ads. I earn a small commission when you purchase items here, which helps to keep the site afloat. Thank you for your support.

XML RSSSubscribe To This Site

follow us in feedly
Add to My Yahoo!
Add to My MSN
Subscribe with Bloglines