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Bike-Doc, Motorcycle Mechanic
Category: Motorcycle
Satisfied Customers: 671
Experience:  I have fixed & modified bikes for 35 yrs I'm now THE Mobile Bike Mechanic for S.LONDON since 1990
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2009 vulcan 900 only 850 miles was riding to day bike

Customer Question

2009 vulcan 900 only 850 miles
was riding to day bike started to losse power and poping and stalling
replaced battery thought it may have caused issue with electronic fuel injection
still cant get bike to start
it may run for a few second eith the motor reving up and down then stall
i replaced the gas with new (no help)
iam pretty handie just looking for help
Submitted: 1 year ago.
Category: Motorcycle
Expert:  Bike-Doc replied 1 year ago.


Welcome to JustAnswer

Has your Kawa been laid-up for more than a couple of months, or at all, before this problem occurred?

Does everything sound/seem normal when you go to start her?

Customer: replied 1 year ago.
I drained old gas added new and seafoam ran bike was able to get it on the road. Bad hesitation and stalling and idel very sluggish other wise everything else is normal. Fi sounds ok warning lights ok
Expert:  Bike-Doc replied 1 year ago.

Sorry for the delay in replying

I'm glad it starts now, that shows that there was/still is an old fuel problem

As you probably know as gasoline evaporates it leaves behind a residue which goes from thick & sticky to a solid resinous stuff which blocks (or partially blocks) the tiny holes in the fuel injection system

A second application of seafoam may cure it, otherwise stripping & cleaning will be involved

Can you check the voltage across the battery with the engine running slow & at roughly 5000rpm,pls?

Expert:  Bike-Doc replied 1 year ago.

I'm following up on my unresolved Q&As to see if I can help any further

Did you resolve the problem ? Was my diagnosis correct ?

Feel free to pose any further question on this subject & I will do my best to help !!

Most of my patients get cured & live to run again !
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