How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Louie Your Own Question
Louie, Technician
Category: Motorcycle
Satisfied Customers: 12038
Experience:  25+ yrs. experience
Type Your Motorcycle Question Here...
Louie is online now
A new question is answered every 9 seconds

Lots of vibration at all speeds, Vespa ET4, 150 cc, 2001, I

Customer Question

Lots of vibration at all speeds
JA: What's the make/model/year of your bike?
Customer: Vespa ET4, 150 cc, 2001
JA: Are you fixing your bike yourself? What have you tried so far?
Customer: I haven't tried anything yet, bought it from a private owner.
JA: Anything else you want the mechanic to know before I connect you?
Customer: No.
Submitted: 8 months ago.
Category: Motorcycle
Expert:  Louie replied 8 months ago.

Hi, I’m Louie. Sorry you had to wait awhile but I’ll do my best to help.

Initially, determine if the vibration is dependent on engine speed (RPM) or on scooter speed (MPH)...accelerating or decelerating or constant speed...or when braking.

Expert:  Louie replied 8 months ago.

Still, proposed preliminary checks (if have not been done) on possible suspects:

  • • tire pressure;
  • • tire thread wear;
  • • sidestand and/or its rubber block;
  • • swing arm long bolt/nut;
  • • variator.